Stimulated emission and lasing in Cu(In,Ga)Se sub(2) thin films

Stimulated emission and lasing in Cu(In,Ga)Se sub(2) thin films have been demonstrated at a temperature of 20 K using excitation by a nanosecond pulsed N sub(2) laser with power densities in the range from 2 to 100 kW cm super(-2). Sharp narrowing of the photoluminescence band, superlinear dependenc...

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Veröffentlicht in:	Journal of physics. D, Applied physics Applied physics, 2016-03, Vol.49 (9), p.95106-95110
Hauptverfasser:	Svitsiankou, I E, Pavlovskii, V N, Lutsenko, E V, Yablonskii, G P, Mudryi, A V, Zhivulko, V D, Yakushev, M V, Martin, R W
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Sprache:	eng
Schlagworte:	Band spectra Excitation Lasers Lasing Spectra Stimulated emission Thin films Thresholds
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creator	Svitsiankou, I E Pavlovskii, V N Lutsenko, E V Yablonskii, G P Mudryi, A V Zhivulko, V D Yakushev, M V Martin, R W
description	Stimulated emission and lasing in Cu(In,Ga)Se sub(2) thin films have been demonstrated at a temperature of 20 K using excitation by a nanosecond pulsed N sub(2) laser with power densities in the range from 2 to 100 kW cm super(-2). Sharp narrowing of the photoluminescence band, superlinear dependence of its intensity on excitation laser power, as well as stabilization of the spectral position and of the full-width at half-maximum of the band were observed in the films at increasing excitation intensity. The stimulated emission threshold was determined to be 20 kW cm super(-2). A gain value of 94 cm super(-1) has been estimated using the variable stripe length method. Several sharp laser modes near 1.13 eV were observed above the laser threshold of I sub(thr) ~ 50 kW cm super(-2).
doi_str_mv	10.1088/0022-3727/49/9/095106
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Sharp narrowing of the photoluminescence band, superlinear dependence of its intensity on excitation laser power, as well as stabilization of the spectral position and of the full-width at half-maximum of the band were observed in the films at increasing excitation intensity. The stimulated emission threshold was determined to be 20 kW cm super(-2). A gain value of 94 cm super(-1) has been estimated using the variable stripe length method. Several sharp laser modes near 1.13 eV were observed above the laser threshold of I sub(thr) ~ 50 kW cm super(-2).</description><identifier>ISSN: 0022-3727</identifier><identifier>EISSN: 1361-6463</identifier><identifier>DOI: 10.1088/0022-3727/49/9/095106</identifier><language>eng</language><subject>Band spectra ; Excitation ; Lasers ; Lasing ; Spectra ; Stimulated emission ; Thin films ; Thresholds</subject><ispartof>Journal of physics. 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D, Applied physics</title><description>Stimulated emission and lasing in Cu(In,Ga)Se sub(2) thin films have been demonstrated at a temperature of 20 K using excitation by a nanosecond pulsed N sub(2) laser with power densities in the range from 2 to 100 kW cm super(-2). Sharp narrowing of the photoluminescence band, superlinear dependence of its intensity on excitation laser power, as well as stabilization of the spectral position and of the full-width at half-maximum of the band were observed in the films at increasing excitation intensity. The stimulated emission threshold was determined to be 20 kW cm super(-2). A gain value of 94 cm super(-1) has been estimated using the variable stripe length method. 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Sharp narrowing of the photoluminescence band, superlinear dependence of its intensity on excitation laser power, as well as stabilization of the spectral position and of the full-width at half-maximum of the band were observed in the films at increasing excitation intensity. The stimulated emission threshold was determined to be 20 kW cm super(-2). A gain value of 94 cm super(-1) has been estimated using the variable stripe length method. Several sharp laser modes near 1.13 eV were observed above the laser threshold of I sub(thr) ~ 50 kW cm super(-2).</abstract><doi>10.1088/0022-3727/49/9/095106</doi></addata></record>
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source	IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link
subjects	Band spectra Excitation Lasers Lasing Spectra Stimulated emission Thin films Thresholds
title	Stimulated emission and lasing in Cu(In,Ga)Se sub(2) thin films
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