Prof. Steponas Ašmontas Profile

Prof. Steponas Ašmontas

Director of Institute at Ctr for Physical Sciences and Technology

SPIE Involvement:

Author | Editor

Publications (20)

Proceedings Article | 22 October 2014 Paper

Photoelectric properties of GaAs p-n-junction under illumination of intense laser radiation

S. Ašmontas, J. Gradauskas, A. Sužiedėlis, A. Šilėnas, V. Vaičikauskas, O. Žalys, G. Steikūnas, A. Steikūnienė

Proceedings Volume 9421, 942102 (2014) https://doi.org/10.1117/12.2077437

KEYWORDS: Gallium arsenide, Solar cells, Carbon dioxide lasers, Solar energy, Semiconductors, Photons, Silicon, Pulsed laser operation, Solar radiation, Electrons

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Proceedings Article | 2 December 2008 Paper

GaAs/AlGaAs heterojunction as a fast detector of infrared laser pulses

Steponas Ašmontas, Jonas Gradauskas, Viktorija Kazlauskaitė, Algirdas Sužiedėlis, Edmundas Širmulis, Mindaugas Vingelis

Proceedings Volume 7142, 71420N (2008) https://doi.org/10.1117/12.815954

KEYWORDS: Heterojunctions, Sensors, Carbon dioxide lasers, Infrared sensors, Infrared lasers, Diodes, Solar energy, Signal detection, Pulsed laser operation, Gallium arsenide

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Proceedings Article | 25 January 2007 Paper

Phonon sidebands in photoluminescence of beryllium delta-doped GaAs/AlAs multiple quantum wells

Jurgis Kundrotas, Aurimas Čerškus, Agnė Johannessen, Steponas Ašmontas, Gintaras Valušis, Matthew Halsall, Paul Harrison

Proceedings Volume 6596, 659612 (2007) https://doi.org/10.1117/12.726488

KEYWORDS: Beryllium, Phonons, Gallium arsenide, Quantum wells, Luminescence, Nitrogen, Liquids, Satellites, Gallium, Semiconductors

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Proceedings Article | 25 January 2007 Paper

Electric field effect on electrical memory of inhomogeneously strained La0.67Ca0.33MnO3 films

Oleg Kiprijanovič, Andžej Lučun, Steponas Ašmontas, Fiodoras Anisimovas, Andrius Maneikis, Bonifacas Vengalis

Proceedings Volume 6596, 659617 (2007) https://doi.org/10.1117/12.726494

KEYWORDS: Resistance, Temperature metrology, Lanthanum, Calcium, Thin films, Oxygen, Magnetism, Crystals, Attenuators, Electrodes

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Proceedings Article | 25 January 2007 Paper

GaAs/AlGaAs structures with δ-doped layer for microwave detection

Algirdas Sužiedėlis, Valerij Petkun, Antoni Kozič, Viktorija Kazlauskaitė, Aurimas Čerškus, Gytis Steikūnas, Jonas Gradauskas, Jurgis Kundrotas, Steponas Ašmontas, Irina Papsujeva, Aleksandras Narkūnas, Tomas Anbinderis, Vladimir Umansky, Hadas Shtrikmann

Proceedings Volume 6596, 65960N (2007) https://doi.org/10.1117/12.726409

KEYWORDS: Diodes, Microwave radiation, Medium wave, Modulation, Gallium arsenide, Liquids, Nitrogen, Crystals, Doping, Semiconductors

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Proceedings Article | 13 June 2006 Paper

Hot carrier photocapacitive effect

Steponas Ašmontas, Jonas Gradauskas, Algirdas Sužiedėlis, Edmundas Širmulis, Antanas Urbelis

Proceedings Volume 5946, 594619 (2006) https://doi.org/10.1117/12.639324

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Proceedings Article | 8 August 2003 Paper

Influence of free carrier heating on IR light detection in narrow-gap semiconductors

Steponas Asmontas, J. Gradauskas, D. Seliuta, A. Suziedelis, E. Sirmulis, V. Tetyorkin, A. Urbelis, G. Valusis

Proceedings Volume 5123, (2003) https://doi.org/10.1117/12.517029

KEYWORDS: Semiconductors, Absorption, Carbon dioxide lasers, Mercury cadmium telluride, Photodiodes, Pulsed laser operation, Infrared detectors, Diodes, Photovoltaics, Infrared radiation

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Proceedings Article | 8 August 2003 Paper

Fast infrared detectors based on nonuniform semiconductors

Steponas Asmontas, J. Gradauskas, D. Seliuta, A. Suziedelis, G. Valusis, E. Sirmulis

Proceedings Volume 5123, (2003) https://doi.org/10.1117/12.517026

KEYWORDS: Sensors, Gallium arsenide, Semiconductors, Germanium, Carbon dioxide lasers, Infrared detectors, Infrared radiation, Infrared sensors, Silicon, Heterojunctions

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Proceedings Article | 8 August 2003 Paper

Quenching of transient photoluminescence by strong in-plane electric fields in quantum wells

Jurgis Kundrotas, Adolfas Dargys, Steponas Asmontas, Gintaras Valusis, Klaus Koehler

Proceedings Volume 5122, (2003) https://doi.org/10.1117/12.515799

KEYWORDS: Quantum wells, Excitons, Electrons, Luminescence, Ionization, Liquids, Nitrogen, Neodymium, Semiconductors, Helium

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Proceedings Article | 26 June 2001 Paper

Photoelectrical properties of nonuniform semiconductor under infrared laser radiation

Steponas Asmontas, Jonas Gradauskas, Dalius Seliuta, Edmundas Sirmulis

Proceedings Volume 4423, (2001) https://doi.org/10.1117/12.431223

KEYWORDS: Solar energy, Semiconductors, Heterojunctions, Gallium arsenide, Carbon dioxide lasers, Infrared lasers, Semiconductor lasers, Pulsed laser operation, Metals, Diffusion

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Proceedings Article | 26 June 2001 Paper

CO2 laser radiation detection in compensated germanium

S. Bumeliene, Steponas Asmontas, Jonas Gradauskas, A. Jukna, J. Parseliunas, Dalius Seliuta, Algirdas Suziedelis, Gintaras Valusis

Proceedings Volume 4423, (2001) https://doi.org/10.1117/12.431207

KEYWORDS: Germanium, Gold, Resistance, Carbon dioxide lasers, Nickel, Temperature metrology, Semiconductors, Information operations, Distortion, Nitrogen

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Proceedings Article | 8 March 2001 Paper

Microwave terahertz detection by asymmetrically necked modulation-doped GaAs/AlGaAs structures

Algirdas Suziedelis, Jonas Gradauskas, Steponas Asmontas, Gintaras Valusis, A. Anagnostopoulos

Proceedings Volume 4318, (2001) https://doi.org/10.1117/12.417604

KEYWORDS: Modulation, Microwave radiation, Terahertz detection, Terahertz radiation, Liquids, Nitrogen, Gallium, Sensors, Diodes

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Proceedings Article | 8 March 2001 Paper

Photothermovoltaic effects induced by CO2 laser illumination of PbTe-metal junctions

Steponas Asmontas, Z. Dashevsky, M. Dariel, Jonas Gradauskas, A. Jarashneli, S. Shusterman, Algirdas Suziedelis, Gintaras Valusis

Proceedings Volume 4318, (2001) https://doi.org/10.1117/12.417602

KEYWORDS: Signal detection, Carbon dioxide lasers, Absorption, Carbon monoxide, Gas lasers, Semiconductor lasers, Group IV semiconductors, N-type semiconductors, Semiconductors, Lead

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Proceedings Article | 4 November 1999 Paper

Photoresponse in nonuniform semiconductor junctions under infrared laser excitation

Steponas Asmontas, Jonas Gradauskas, Dalius Seliuta, Edmundas Sirmulis

Proceedings Volume 3890, (1999) https://doi.org/10.1117/12.368343

KEYWORDS: Gallium arsenide, Solar energy, Semiconductors, Pulsed laser operation, Photovoltaics, Carbon dioxide lasers, Gas lasers, Infrared lasers, Crystals, Diffusion

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Proceedings Article | 4 April 1997 Paper

Photoelectrical properties of nonuniform GaAs structures under infrared laser illumination

Steponas Asmontas, Jonas Gradauskas, Dalius Seliuta, A. Silenas, Edmundas Sirmulis, I. Marmur

Proceedings Volume 3093, (1997) https://doi.org/10.1117/12.271703

KEYWORDS: Gallium arsenide, Signal detection, Electrons, Infrared lasers, Crystals, Solar energy, Germanium, Liquids, Nitrogen, Pulsed laser operation

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Proceedings Article | 6 February 1997 Paper

Photoemf of hot carriers in nonuniform GaAs

Steponas Asmontas, Jonas Gradauskas, Dalius Seliuta, A. Silenas, Edmundas Sirmulis

Proceedings Volume 2968, (1997) https://doi.org/10.1117/12.266815

KEYWORDS: Gallium arsenide, Signal detection, Resistance, Infrared lasers, Infrared detectors, Infrared radiation, Carbon dioxide lasers, Sensors, Silicon, Pulsed laser operation

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Proceedings Article | 18 December 1996 Paper

Wide frequency band radiation detector

Steponas Asmontas, Jonas Gradauskas, Algirdas Suziedelis

Proceedings Volume 2842, (1996) https://doi.org/10.1117/12.262788

KEYWORDS: Sensors, Microwave radiation, Diodes, Semiconductors, Semiconductor lasers

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Proceedings Article | 30 August 1993 Paper

New microwave detector

Steponas Ašmontas

Proceedings Volume 2104, 21040M (1993) https://doi.org/10.1117/12.2298454

KEYWORDS: Medium wave, Signal detection, Diodes, Sensors, Microwave radiation, Semiconductors, Resistance, Liquids, Nitrogen, Gallium arsenide

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Proceedings Article | 10 December 1992 Paper

Nonlinear behavior of photovoltage in Al/n-Si Schottky-barrier detector under IR laser radiation

Steponas Asmontas, Dalius Seliuta, Edmundas Sirmulis

Proceedings Volume 1735, (1992) https://doi.org/10.1117/12.138630

KEYWORDS: Carbon dioxide lasers, Infrared detectors, Sensors, Semiconductors, Pulsed laser operation, Infrared sensors, Infrared lasers, Absorption, Photovoltaics, Crystals

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Proceedings Article | 1 September 1991 Paper

Hot carrier silicon phototransistor

Steponas Asmontas, Jonas Gradauskas, Edmundas Sirmulis

Proceedings Volume 1512, (1991) https://doi.org/10.1117/12.47155

KEYWORDS: Phototransistors, Silicon, Infrared radiation, Transistors, Resistance, Germanium, Diffusion, Infrared detectors, Infrared materials, Optoelectronics

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