2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1997

Diplom- und Doktorarbeiten

2012

 

• Effect of the Metallization on the Resonances of THz Fishnet Metamaterials

         C. Sabah and H. G. Roskos

         Journal of the European Optical Society Rapid Publications (JEOS:RP) 7 (2012) 12005

 

• Design of a terahertz polarization rotator based on a periodic sequence of chiral-metamaterial and dielectric slabs

          C. Sabah and H. G. Roskos

          Progress In Electromagnetics Research (PIER) 124 (2012) 301-314

 

• Dual-band polarization-independent sub-terahertz fishnet metamaterial

          C. Sabah and H. G. Roskos

          Current Applied Physics 12 (2012) 443-450 (Available online 4 August 2011)

2011

• Terahertz propagation properties of free-standing woven-steel-mesh metamaterials: Pass-bands and signatures of abnormal group velocities

          C. Sabah, M. D. Thomson, F. Meng, S. Tzanova, and H. G. Roskos

         Journal of Applied Physics 110 (2011) 064902

 

 

• Performance and performance variations of sub-1 THz detectors fabricated with 0.15 µm CMOS foundry process

          S. Boppel, A. Lisauskas, V. Krozer, and H. G. Roskos

          Electron. Letters 47 (2011) 661-662

 

 

• Experimental demonstration of efficient pulsed terahertz emission from a stacked GaAs/AlGaAs p-i-n-i heterostructure

          A. Lisauskas, A. Reklaitis, R. Venckevicius, I. Kasalynas, G. Valusis, G. Grigaliunaite-Vonseviciene, H. Maestre, J. Schmidt, V. Blank,

         M. D. Thomson, H. G. Roskos, and K. Köhler

         Appl. Phys. Lett. 98 (2011) 091103

 

 

• Strong Electric Field Driven Carrier Transport Non-Linearities in n-Type GaAs/AlGaAs Superlattices

          L. Subacius, R. Venckevicius, I. Kasalynas, D. Seliuta, G. Valusis, J. Schmidt, A. Lisauskas, H. G. Roskos, K. Alekseev, and K. Köhler

          Acta Phys. Polonica A 119 (2011) 167-169

 

 

• Numerical and experimental investigation of fishnet-based metamaterial in a X-band waveguide

          C Sabah and H G Roskos

          Journal of Physics D: Applied Physics 44 (2011) 255101

 

 

2010

• Terahertz white-light pulses from an air plasma photo-induced by incommensurate two-color optical fields

          M. D. Thomson, V. Blank, and H. G. Roskos

          Opt. Express, 18 (2010) 23173–23182.

 

 

• Redox-Active Ferrocenylboronium Polyelectrolytes with Main Chain Charge-Transfer Structure

          C. Cui, J. Heilmann-Brohl, A. Sanchez Perucha, M. D. Thomson, H. G. Roskos, M. Wagner, and F. Jäkle

          Macromolecules, 43 (2010) 5256–5261.

 

 

• Coherent electro-optical detection of terahertz radiation from an optical parametric oscillator

          Opt. Express, 18 (2010) 11316-11326.

 

 

• Terahertz heterodyne detection with silicon field-effect transistors

          D. Glaab, S. Boppel, A. Lisauskas, U. Pfeiffer, E. Öjefors, and H. G. Roskos

          ppl. Phys. Lett. 96 (2010) 042106

 

 

2009

• Magnetic-field-enhanced transient and stationary drift currents of oscillating Bloch electrons in

          superlattices and limits of average-particle description in relation to Monte Carlo simulations

          N. V. Demarina, E. Mohler, A. Lisauskas, and H. G. Roskos

          Phys. Rev. B 80 (2009) 245307

 

 

• Characterizing large-area electro-optic crystals toward two-dimensional real-time terahertz imaging

          F. Meng, M. D. Thomson, V. Blank, W. von Spiegel, T. Löffler, and H. G. Roskos

        Appl. Opt., 48 (2009) 5197-5204.

 

 

• A CMOS focal-plane array for heterodyne terahertz imaging
  U. Pfeiffer, E. Öje­fors, A. Lisauskas, D. Glaab, and H. G. Roskos,
  Proc. IEEE RFIC Symposium 2009, (2009) 433-436.

• Terahertz imaging with Si MOSFET focal-plane arrays
  A. Lisauskas, D. Glaab, H. G. Roskos, E. Öjefors, and U. R. Pfeiffer,
  Proc. SPIE, 7215 (2009) 72150J.

• Quasioptical system design
  C. am Weg, W. von Spiegel, R. Henneberger, R. Zimmermann, T. Löffler, and H. G. Roskos,
  Proc. SPIE, 7215 (2009) 72150R.

• Fast active THz camera with range detection by frequency modulation
  C. am Weg, W. von Spiegel, R. Henneberger, R. Zimmermann, T. Löffler, and H. G. Roskos,
  Proc. SPIE, 7215 (2009)  72150F.

• Fast Active THz Cameras with Ranging Capabilities
  C. am Weg, W. von Spiegel, R. Henneberger, R. Zim­mer­mann, T. Löffler, and H. G. Roskos,
  Journal of Infrared, Millimeter and Terahertz Waves, 30 (2009) 1281-1296.

• Terahertz imaging detectors in CMOS technology
  E. Öjefors, A. Lisauskas, D. Glaab, H. G. Roskos, and U. R. Pfeiffer
  Journal of Infrared, Millimeter and Terahertz Waves, 30 (2009) 1269-1280.

• A 0.65 THz focal-plane array in a quarter-micron CMOS process technology
  E. Öjefors, U. Pfeiffer, A. Lisauskas, and H. G. Roskos,
  IEEE J. Solid State Circuits, 44 (2009) 7-15.

• Rational design of high-responsivity detectors of THz radiation based on distri­buted self-mixing in silicon CMOS transistors
  A. Lisauskas, U. Pfeiffer, E. Öje­fors, P. Haring Bolívar, D. Glaab, and H. G. Roskos,
  J. Appl. Phys., 105 (2009) 114511.

• Synthesis, Structure, Photoluminescence and Photoreactivity of 2,3-Diphenyl-4-neopentyl-1-silacyclobut-2-enes
  D. Yan, M. D. Thomson, M. Backer, M. Bolte, R. Hahn, R. Berger, W. Fann, H. G. Roskos, N. Auner,
  Chemistry – A European Journal, 15 (2009) 8625-8645.

2008

• Opportunities for silicon at mm-wave and terahertz frequencies (invited)
  U. R. Pfeiffer, E. Öje­fors, A. Lisauskas, and H. G. Roskos,
  IEEE BCTM Proceedings (Proc. of the 2008 bipolar/BICMOS circuits and technology meeting), (2008) 149-156.

• Terahertz profilometry at 600 GHz with 0.5 μm depth resolution
  B. Hils, M. D. Thomson, T. Löffler, W. von Spiegel, C. am Weg, H. G. Roskos, P. de Maagt, D. Doyle, and R. D. Geckeler,
  Optics Express, 16, (2008) 11289-11293.

• Examining the terahertz signal from a photoexcited biased semiconductor superlattice for evidence of gain
  A. Lisauskas, M. M. Dignam, N. V. Demarina, E. Mohler, and H. G. Roskos,
  Appl. Phys. Lett., 93 (2008) 021122.

• Diagnosing water content in paper by terahertz radiation
  D. Banerjee, W. von Spiegel, M. D. Thomson, S. Schabel, and H. G. Roskos,
  Optics Express, 16 (2008) 9060-9066.

• Electron ensemble coherence and terahertz radiation amplification in a cascade superlattice structure
  N. V. Demarina, A. Lisauskas, and H. G. Roskos,
  Micro­electronics Journal, 39 (2007) 624-627.

• Terahertz imaging with GaAs field-effect transistors
  A. Lisauskas, W. von Spiegel, S. Boubanga-Tombet, A. El Fatimy, D. Coquillat, F. Teppe, N. Dyakonova, W. Knap, and H. G. Roskos
  Electron. Letters, 44 (2008) 408-409.

• Berührungsfreie Prüfung von Materialoberflächen mit THz-Strahlung / Contactless testing of the surfaces of materials
  B. Hils, W. von Spiegel, T. Löffler, and H. G. Roskos,
  Technisches Messen, 75 (2008) 45-50.

• Concept of internal mixing in semiconductor lasers and optical amplifiers for room-temperature generation of tunable continuous terahertz waves
  A. Lisauskas, M. Dias, S. Belz, R. Sachs, M. Feiginov, and H. G. Roskos,
  Physica E, 40 (2008) 1968-1970.

• Few-cycle laser pulses: The carrier-envelope phase, its role in the THz emission from laser-generated plasmas and a new way to measure it
  M. Kreß, T. Löffler, M. D. Thomson, R. Dörner, H. Gimpel, K. Zrost, T. Ergler, R. Moshammer, U. Morgner, J. Ullrich, and H. G. Roskos,
  Acta Physica Polonica, 113 (2008) 769-776.

2007

• Broadband THz emission from gas plasmas induced by femtosecond optical pulses: From fundamentals to applications
  M. D. Thomson, M. Kreß, T. Löffler, and H. G. Roskos,
  Laser & Photon. Rev. 1, No. 4 (2007) 349–368.

• Carrier-density dependence of the exchange coupling between magnetic ions and conduction band electrons in heavily n-type Zn(1-x)MnxSe and optically pumped Cd(1-x)MnxTe
  M. Lentze, P. Grabs, J. Geurts, K. Rönnburg, E. Mohler, and H. G. Roskos,
  Int. J. Mod. Phys. B, 21, (2007) 1632–1637.

• Interaction of optically created electron ensemble with terahertz radiation in a short semiconductor superlattice
  N. V. Demarina, A. Lisauskas, and H. G. Roskos,
  Physics, Chemistry and Application of Nanostructures: Review and short notes, 2007 (Proc. of Nanomeeting 2007, May 22-25, Minsk, Byelarus), p. 200-203.

• Radiation field screening in photoconductive antennas studied via pulsed terahertz emission spectroscopy
  G. C. Loata, M. D. Thomson, T. Löffler, and H. G. Roskos,
  Appl. Phys. Lett., 91, 232506 (2007).

• All-optoelectronic terahertz imaging systems and examples for their application
  T. Löffler, K. J. Siebert, N. Hasegawa, T. Hahn, and H. G. Roskos,
  Proc. IEEE., 95, 1576-1582 (2007).

• Towards an active real-time THz camera: First realization of a hybrid system
  T. May, C. am Weg, A. Alcin, B. Hils, T. Löffler, and H. G. Roskos,
  SPIE Proc., 6549, 654907 (2007).

• Towards superlattice terahertz amplifiers and lasers
  A. Lisauskas, E. Mohler, H. G. Roskos, and N. V. Demarina, NATO ASI, eds. R. E. Miles et al.,
  Terahertz Frequency Detection and identification of materials and objects, Springer (2007) 31-40.

• Concept of internal mixing in semiconductor lasers and optical amplifiers for room-temperature generation of tunable continuous terahertz waves
  A. Lisauskas, M. Dias, S. Belz, H. G. Roskos, and M. Feiginov
  J. Nanoelectron. Optoelectron, 2 (2007) 1-10.

• Continuous-wave terahertz imaging with a hybrid system
  Torsten Löffler, Thilo May, Christian am Weg, Ali Alcin, Bernd Hils, and Hartmut G. Roskos
  Appl. Phys. Lett.90 (2007), 091111

• Evidence for long-living charge carriers in electrically biased low-temperature-grown GaAs photoconductive switches
  Gabriel C. Loata, Torsten Löffler, and Hartmut G. Roskos
  Appl. Phys. Lett.90 (2007), 052101

• Characterization of Fe(II) complexes exhibiting the ligand-driven light-induced spin-change effect using SQUID and magnetic circular dichroism
  J. Kolb, M. D. Thomson, M. Novosel, K. Sénéchal, E. Rivière, M.-L. Boillot, and H. G. Roskos,
  Comptes Rendus Chimie, 10 (2007) 125-136.

2006

• Comment on "Dispersive terahertz gain of a nonclassical oscillator: Bloch oscillation in semiconductor superlattices"
  A. Lisauskas, N. Demarina, E. Mohler, and H. G. Roskos
  cond-mat/0605651

• Silicon lens-coupled bow-tie InGaAs-based broadband terahertz sensor operating at room temperature
  D. Seliuta, I. Kasalynas, V. Tamošiunas, SS. Balakauskas, Z. Martunas, S. Ašmontas, G. Valušis, A. Lisauskas, H. G. Roskos, and K. Köhler,
  Electron. Lett 42 (2006), 825-827

• Ballistic transport in semiconductor nanostructures: From quasi-classical oscillations to novel THz-emitters: Silicon lens-coupled bow-tie InGaAs-based broadband terahertz sensor operating at room temperature
  G. H. Döhler, M. Eckardt, A. Schwanhäußer, F. Renner, S. Malzer, S. Trumm, M. Betz, F. Sortier, A. Leitenstorfer, G. Loata, T. Löffler, and H. Roskos, T. Müller, K. Unterrainer, D. Driscoll, M. Hanson, and A. C. Gossard,
  Pramana Journal of Physics 67 (2006), 199-205

• Determination of the carrier-envelope phase of few-cycle laser pulses with terahertz-emission spectroscopy
  M. Kreß, T. Löffler, M. D. Thomson, R. Dörner, H. Gimpel, K. Zrost, T. Ergler, R. Moshammer, U. Morgner, J. Ullrich, and H. G. Roskos,
  Nature Physics 2 (2006), 327-331

• Generation of a DC Fiske current by coupling of Bloch and in-plane cyclotron oscillations in a semiconductor superlattice
  Y. A. Kosevich, A. B. Hummel, H. G. Roskos, and K. Köhler,
  phys. stat. sol. b 243 (2006), 2405

• The coherent Hall Effect of charge carriers in a superlattice: semiclassical descrip¬tion of the wavepacket dynamics
  A. B. Hummel, T. Bauer, E. Mohler, and H. G. Roskos,
  J. Phys.: Condens. Matter 18 (2006), 2487-2509

• Time-resolved photocurrent spectroscopy of optically excited superlattices and the prospects for Bloch gain
  A. Lisauskas, N. Demarina, C. Blöser, R. Sachs, A. Juozapavicius, G. Valušis, K. Köhler, and H. G. Roskos,
  Proc. SPIE 6118 - Ultrafast phenomena in semiconductors and nanostructure materials (2006) 611810, (11 pages)

• Ultrafast Fiske effect in semiconductor superlattices
  Y. A. Kosevich, A. B. Hummel, H. G. Roskos, and K. Köhler,
  Phys. Rev. Lett. 96 (2006), 137403

• Motional-narrowing-type dephasing of electron and hole spins in of itinerant excitons in magnetically doped II-VI bulk semiconductors
  K. Rönnburg, E. Mohler, H. G. Roskos, K. Ortner, C. R. Becker, L. W. Molenkamp,
  Phys. Rev. Lett. 96 (2006), 117203

2005

• Terahertz surface and interface characterization
  T. Löffler, K. J. Siebert, N. Hasegawa, T. Hahn, G. Loata, R. Wipf, M. Kreß, M. Thomson, and H. G. Roskos,
  Microwave Symposium Digest 2005 IEEE-MTT-S International, 633-636

• Large-area electro-optic ZnTe terahertz emitters
  T. Löffler, T. Hahn, M. Thomson, F. Jacob, and H. G. Roskos,
  Opt. Express 13 (2005), 5353-5362

• Electro-optic investigation of the Coherent Hall Effect in semiconductor superlattices,
  A. B. Hummel, C. Blöser, T. Bauer, H.G. Roskos, Yu. A. Kosevich, and K. Köhler,
  phys. stat. sol. (b) 242 (2005) 1175-1178

• Spin-conserving carrier recombination in conjugated polymers,
  M. Reufer, M. J. Walter, P. G.Lagoudakis, A. B. Hummel, J. S. Kolb, H. G. Roskos, U. Scherf and J. M. Lupton,
  Nature Materials 4 (2005) 340-346

• Efficient Terahertz Pulse Generation in Laser-Induced Gas Plasmas,
  T. Löffler, M. Kreß, M. Thomson and H.G. Roskos,
  Appl. Phys. Lett. 86 (2005) 102103-102105

• Photonic THz technology,
  A. Lisauskas, T. Löffler, and H. G. Roskos,
  Editorial to the special edition of Semicond. Sci. Technol. 20 July 2005

• Comparative performance of terahertz emitters in amplifier-laser-based systems,
  T. Löffler, M. Kreß, M. Thomson, T. Hahn, N. Hasegawa, and H. G. Roskos,
  Semicond. Sci. Technol. 20 (2005) S134-141

• THz-photomixer based on quasi-ballisitc transport,
  G. H. Döhler, F. Renner, O. Klar, M. Eckardt, A. Schwanhäußer, S. Malzer, D. Driscoll, M. Hanson, A. C. Gossard, G. Loata, T. Löffler, and H. Roskos,
  Semicond. Sci Technol. . 20 (2005) S178-190

• THz-emitter based on ballistic transport in nano-pin diodes,
  F. Renner, M. Eckardt, A. Schwanhäußer, O. Klar, S. Malzer, G. H. Döhler, G. Loata, T. Löffler, H. Roskos, M. Hanson, D. Driscoll, and A. C. Gossard
  phys.stat. sol. (a) 202 (2005) 965-969

• Time-resolved photocurrent spectroscopy of the evolution of the electric field in optically excited superlattices and the prospects for Bloch gain,
  A. Lisauskas, C. Blöser, R. Sachs, H. G. Roskos, A. Juozapavicius, G. Valušis, and K. Köhler,
  Acta Physica Polonica (A) 107 99 (2005)

• Ultrafast optical and magneto-optical dynamics in colossal-magnetoresistance (CMR) manganites,
  V. Dorosinets, P. Richter, G. Jakob, and H.G.Roskos,
  Acta Physica Polonica (A) 107 (2005) 211-214

• Broad band THz sensing by 2DEG bow-tie-type diodes,
  G. Valušis, D. Seliuta, V. Tamošiunas, E. Širmulis, S. Balakauskas, J. Gradauskas, A. Sudžiedelis, S. Ašmontas, T. Anbinderis, A. Narkunas, I. Papsujeva, A. Lisauskas, H. G. Roskos, and K. Köhler,
  Acta Physica Polonica (A) 107 (2005) 184-187

• Dynamics of the electric field in a GaAs/AlGaAs superlattice after femtosecond optical excitation: application of time-resolved spectroscopic techniques,
  A. Lisauskas, C. Blöser, R. Sachs, H. G. Roskos, A. Juozapavicius, G. Valušis, and K. Köhler,
  Acta Physica Polonica (A) 107 (2005) 250-255

• Picosecond energy relaxation in La_0.67Ca_0.33MnO₃,
  V. Dorosinets, P. Richter, E. Mohler, H. G. Roskos, and G. Jakob,
  Physica B 359-361 (2005) 1297-1299

• The evolution of the electric field in an optically excited semiconductor superlattice,
  A. Lisauskas, C. Blöser, A. B. Hummel, R. Sachs, H. G. Roskos, A. Juozapavicius, G. Valusis, and K. Köhler,
  phys. stat. sol. (c) 2 (2005) 3055-3058

2004

• Kurze Wellen, lange Wellen, Terawellen,
  H. G. Roskos and T. Löffler,
  Forschung Frankfurt 3-4 45-48 (2004)

• Electronic structure, photophysics and relaxation dynamics of charge transfer excited states in boron- nitrogen bridged organometallic compounds,
  M. Thomson, M. Novosel, H. G. Roskos,, T. Müller, M. Scheibitz, M. Wagner, F. Fabrizi de Biani, P. Zanello,
  J. Phys. Chem. A 108 3281 (2004)

• On the way to "optical doping" of electronically low-dimensional polymer systems with strong charge and spin correlations,
  M. Thomson, H. G. Roskos, M. Wagner,
  Appl. Phys. A 78 477 (2004)

• A New THz-Photomixer Based On a n-i-p-n Doping Superlattice,
  G. Loata, T. Löffler, H.G. Roskos, F.H. Renner, O. Klar, M. Eckardt, A. Scwanhäußler, G.H. Döhler, D. Driscoll, M. Hansen, A.C. Gossard, V. Krozer,
  International Conference on Infrared and Millimeter Waves (2004) 495

• Optical far-IR wave generation - state-of-the-art and advanced device structures,
  V. Krozer, B. Leone, H. G. Roskos, T. Löffler, G. Loata, G. H. Dohler, F. Renner, S. Eckardt, S. Malzer, A. Schwanhäußler, T. O. Klaassen, A. Adam, P. Lugli, A. Di Carlo, M. Manenti, G. Scamarcio, M. S. Vitiello, and M. Feiginov,
  Proc. SPIE Int. Soc. Opt. Eng. 178 (2004) 5466

• Detection of THz/subTHz radiation by asmmetricallly-shaped 2DEG layers,
  Seliuta, E. Sirmulis, V. Tamosiunas, S. Balakauskas, A. Suziedelis, J. Gradauskas, G. Valusis, A. Lisauskas, H.G. Roskos and K. Köhler,
  Electr. Lett. 40 No. 10 (2004) 631-632

• All-optoelectronic continuous-wave terahertz systems,
  Löffler, K. J. Siebert, H. Quast, N. Hasegawa, G. Loata, R. Wipf, T. Hahn, M. Thomson, R. Leonhardt, and H. G. Roskos,
  The Royal Society: Philosophical Transactions, 362 (2004) 263 - 281

• Mode Calculations for a Terahertz Quantum Cascade Laser,
  R. Sachs and H. G. Roskos,
  Optics Express, 12 (2004) 2062

• Field screening in low-temperature-grown GaAs photoconductive antennas,
  K. J. Siebert, A. Lisauskas, T. Löffler, H. G. Roskos,
  Jap. J. Appl. Phys., 43 (2004) 1038

• Terahertz-pulse generation by photoionisation of air with laser pulses composed of both fundamental and second-harmonic wave,
  M. Kreß, T. Löffler, S. Eden,, M. Thomson and H. G. Roskos,
  Optics Letters, 29 (2004) 1120

2002

• Efficient THz-emitter for low-temperature-grown GaAs photomixers,
  C. Sydlo, J. Sigmund, G. Loata, K. J. Siebert, H. G. Roskos, and H. L. Hartnagel,
  Proceeding of THz 2002, Cambridge

• Asymmetrically-shaped diodes for microwav - submillimeter sensing,
  S. Asmontas, L. ardaravicius, S. Balakauskas, J. Gradauskas, A Kozic, J. Kundrotas, K. Köhler, H. G. Roskos, R. Sachs, A. Sudziedelis, D. Sirmulis, and G. Valusis,
  Proc. 26th Intern. Conf. on the Physics of Semiconductors, ICPS-26, paper D-240

• The Coherent Hall Effect: Evolution of the hall current of charge-carrier wavepackets in a semiconductor superlattice,
  T. Bauer, J. S. Kolb, A. B. Hummel, H. G. Roskos, Y. A. Kosevich and K. Köhler,
  Proc. 26th Intern. Conf. on the Physics of Semiconductors, ICPS-26, paper N2-3

• Terahertz dielectric response of a moving electron gas,
  R. Sachs, L. A. Banyai, E. Mohler, K. Köhler, and H. G. Roskos,
  Proc. 26th Intern. Conf. on the Physics of Semiconductors, ICPS-26, paper P-172

• Effects of frequency on image quality in terahertz pulsed images,
  A. J. Fitzgerald, E. Dzontoh, T. Löffler, K. J. Siebert, E. Berry, N. N. Zinovev, R. E. Miles, M. A. Smith und M. Chamberlain,
  Proceedings of SPIE Medical Imaging, San Diego

• All-optoelectronic CW THz imaging for tumor recognition,
  K. J. Siebert, T. Löffler, H. Quast, R. Leonhardt, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch,
  Ulrafast Phenomena XIII, Springer Verlag

• The Hall current of coherent electron wavepackets,
  T. Bauer, A. B. Hummel, J. S. Kolb, H. G. Roskos, Y. A. Kosevich and K. Köhler,
  Ulrafast Phenomena XIII, Springer Verlag

• Thz generation by third-order non-linearities in air and air-plasmas,
  T. Löffler, S. Eden, M. Thomson, and H. G. Roskos,
  Ulrafast Phenomena XIII, Springer Verlag

• Indium-Tin-Oxide-Coated Glass as Dichroic Mirror for Far-Infrared Electromagnetic Radiation,
  T. Bauer, J.S. Kolb, T. Löffler, E. Mohler, and H. G. Roskos,
  J. of Appl. Phys. 92 (2002) 2210

• Investigation of tumor recognition by terahertz dark--field imaging,
  T. Löffler, T. Bauer, K. J. Siebert, H. G. Roskos, A. Fitzgerald und S. Czasch,
  OSA Trends in Optics and Photonics (TOPS), CLEO 2002, Postconference Edition, CWJ1 p. 405

• Continuous-wave all-optoelectronic terahertz imaging,
  K. J. Siebert, H. Quast, R. Leonhardt, T. Löffler, M. Thomson, T. Bauer, H. G. Roskos, and S. Czasch,
  Appl. Phys. Lett. 80 (2002) 3003-3006

• Visualization and classification in biomedical terahertz pulsed imaging,
  Torsten Löffler, Karsten Siebert, Stephanie Czasch, Tobias Bauer, Hartmut G. Roskos,
  Phys. Med. Bio. 47 21 (2002) 3847

• All-optoelectronic CW THz imaging for biomedical applications,
  K. Siebert, T. Löffler, H. Quast, M. Thomson, T. Bauer, R. Leonhardt, S. Czasch, H. G. Roskos,
  Phys. Med. Bio. 47 21 (2002) 3743

• Free-carrier dynamics in low-temperature-grown GaAs at high excitation densities investigated by time-domain THz spectroscopy,
  G. Segschneider, F. Jacob, T. Löffler, H. G. Roskos, S. Tautz, P. Kiesel, G. Döhler,
  Physical Review B 65 (2002) 125205

• Gas-pressure dependence of terahertz-pulse generation in a laser-generated nitrogen plasma,
  T. Löffler, H. Roskos,
  Journal of Applied Physics 91 (2002) 2611

• Coherent Hall Effect in a Semiconductor Superlattice,
  T. Bauer, J. Kolb, A. B. Hummel, H. G. Roskos, Y. Kosevich and K. Köhler,
  Physical Review Letters 88 8 (2002) 086801

2001

• Photoconductivity of regular low-dimensional arrays of GaAs wires,
  V. K. Ksenevich, G. Valusis, H. G. Roskos, and V. A. Samuilov,
  Ultrafast Phenomena in Semiconductors, Materials Science Forum Vols. 384-385, Trans Tech Publications Ltd., p. 87-90.

• Magnetotransport in low-dimensional honeycomb-shaped GaAs networks,
  V. K. Ksenevich, J. Galibert, H. G. Roskos, and V. A. Samuilov,
  Ultrafast Phenomena in Semiconductors, Materials Science Forum Vols. 384-385, Trans Tech Publications Ltd., p. 59-62.

• GHz-THz detection by asymmetrically-shaped GaAs: bulk material versus nanostructures,
  G. Valusis, R. Sachs, H. G. Roskos, A. Sudziedelis, J. Gradauskas, S. Asmontas, E. Sirmulis, and K. Köhler,
  Ultrafast Phenomena in Semiconductors, Materials Science Forum Vols. 384-385, Trans Tech Publications Ltd., p. 193-196.

• Very-broad frequency band detector based on asymmetrically-necked n-n^+-GaAs structures,
  A. Sudziedelis, J. Gradauskas, S. Asmontas, G. Valusis, and H. G. Roskos,
  submitted to J. Appl. Phys.

• Dynamics of Mobile Carriers in LT-GaAs at High Excitation Densities,
  G. Segschneider, H. G. Roskos, S. Tautz, P. Kiesel, G. Döhler,
  Proceedings of the 3rd Symposium On Non-Stoichiometric III-V Compounds (2001) pp. 61-6

• Continous-Wave THz Imaging with Photoconducitve LT-GaAs Antennae,
  R. Leonhardt, K. J. Siebert, H. Quast, T. Löffler, M. Thomson, H. G. Roskos,
  Proceedings of the 3rd Symposium On Non-Stoichiometric III-V Compounds (2001) pp. 25-30

• Experimental evidence for electron repulsion in multiphoton double ionization,
  M. Weckenbrock, M. Hattass, A. Czasch, O. Jagutzki, L. Schmidt, T. Weber, H. Roskos, t. Löffler, M. Thomson, R. Dörner,
  Journal of Physics B 34 (2001) L449-55

• Potential medical applications of THz imaging,
  J. Handley, A. Fitzgerald, T. Löffler, K. J. Siebert, E. Berry and R. Boyle,
  Proceedings of Medical Imaging Understanding and Analysis, Birmingham

• Terahertz dark-field imaging of biomedical tissue,
  T. Löffler, T. Bauer, K. Siebert, H. Roskos, A. Fitzgerald, S. Czasch,
  Optics Express, Vol. 9, No. 12, (2001) pp. 616, Optics Express

• Optical Determination of the oxygen content YBa2Cu3O6+x thin film by IR reflectance and transmittance measurements,
  P. Richter, M. Kreß, E. Mohler, H.G. Roskos, G. Jakob, H. Adrian,
  Physica C 366/1 (2001) pp. 63-72

• Perspectives of continuous-wave optoelectronic THz imaging,
  K. J. Siebert, H. Quast, and H. G. Roskos, in ASI Proceedings,
  Series E, New Directions in Terahertz Technology, ed. J. M. Chamberlain and R. E. Miles, NATO Science Series, II. Vol. 27, Terahertz Sources and Systems, ed. R.E. Miles, P. Harrison and D. Lippens, Kluwer Academic Publishers, NATO ASI Series, 2001, p. 127-143.

2000

• CW-THz generation using a two-color Ti:Sapphire laser,
  K. J. Siebert, H. Quast und H. G. Roskos,
  Proceedings of International THz Workshop 2000, p. 24, Sandbjerg / DK

• Observation of THz oscillations and efficient THz emission from contacted low temperature grown GaAs structures,
  C. Steen, S. Tautz, P. Kiesel, S.U. Dankowski, G. H. Döhler, U.D. Keil, G. Segschneider, K. Siebert, H. G. Roskos and V. Krozer,
  Proceedings of THz 2000, Darmstadt, p. 59-62, VDE Verlag

• An optoelectronic cw THz source for imaging applications,
  K. Siebert, G. Segschneider, H. Quast, H. G. Roskos, S. Tautz, P. Kiesel, G. Döhler, and V. Krozer,
  Proceedings of THz 2000, Darmstadt, p. 213-215, VDE Verlag

• Electrical detection of THz frequencies by asymmetrically shaped n-n+- GaAs diodes,
  A. Suziedelis, J. Gradauskas, S. Asmontas, G. Valusis, and H. G. Roskos,
  Proceedings of THz 2000, Darmstadt, p. 241-243, VDE Verlag

• A two-color Ti:sapphire laser for cw THz generation,
  K. J. Siebert, F. Siebe, R. Leonhardt und H. G. Roskos,
  OSA Trends in Optics and Photonics (TOPS), CLEO 2000, Postconference Edition, p. 497

• THz generation by photo-ionization of electrically biased air,
  T. Löffler, F. Jacob, and H. G. Roskos,
  Ultrafast Phenomena X, Springer Series in Chemical Physics, Vol. 66, Springer Verlag, Berlin

• Generation of terahertz pulses by photo-ionization of air,
  T. Löffler, F. Jacob, and H. G. Roskos,
  Appl. Phys. Lett. 77 (2000) pp. 453-5

• Evolution of the energy levels of a GaAs/AlGaAs superlattice under the influence of a strong magnetic field,
  T. Bauer, A.B. Hummel, H. Roskos, K.Köhler,
  Physica E 7 (2000) pp. 289-93

• Overview on time-domain terahertz spectroscopy and its applications in atomic and semiconductor physics,
  H. G. Roskos,
  Physica Scripta T86 (2000) pp. 51-4
  

1999

• Advances in continous-wave THz generation,
  K. Siebert, F. Siebe, M. Thomson, J. Zare.Baghbidi, R. Leonhardt, H. Roskos,
  SPIE Proceedings, 3828, Terahertz Spectroscopy and Applications II (1999) pp. 234-43

• A fully tunable dual-color cw Ti:Al₂O₃ laser,
  F. Siebe, K. Siebert, R. Leonhardt, H. Roskos,
  IEEE Journal of Quantum Electronics, JQE-35, no. 11 (1999) pp. 1731-6

1997

• Fresh insights into electron oscillations,
  H. Roskos,
  Physics World 10 (1997) pp. 24-5
  
  

 

geändert am 29. März 2012  E-Mail: Webmasternovosel@physik.uni-frankfurt.de

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