Excitons and phonons in processes of laser oscillation from II-VI semiconductors

Brodin, M. S.; Goer, D. B.; Zakrevski, S.; Reznichenko, V. Ya.

doi:10.1109/jqe.1970.1076483

Cited by 3 publications

(2 citation statements)

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“…The front surfaces were polished to 14 class of optical quality. The technique of one beam light was used for the azimuthal dependence measurement of twophoton absorption intensity not far from a crystals destruction threshold (~ 14 MW/cm 2 ) [2,3]. The decrease of incident light intensity І 0 is determined by the value of one-photon absorption (K) and two-photon absorption (β) coefficients.…”

Section: Experiments and Resultsmentioning

confidence: 99%

“…It is known that the broadband gyrotropic cadmium diphosphide crystals (CdP 2 ) possess much higher nonlinear polarizability and gyrotropy in comparison with other nonlinear crystals [1][2][3]. Their locality and operation by light transmission practically without inertia allows to realize a momentary feedback influence on the active radiation field.…”

Section: Introductionmentioning

confidence: 99%

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Space polarization and nonlinear absorbability of gyrotropic cadmium diphosphide crystals

Fekeshgazi

Sidenko

Czitrovszky

et al. 2011

Phys. Status Solidi C

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Two‐photon absorption coefficient of cadmium diphosphide single crystals have been measured depending on a polarization azimuth (ϕ) at extreme light intensities near the optical damage threshold (11 MW/cm2). It is shown that the maximum value of this coefficient is equal to 0.16 cm/MW at ϕ = 0 (for the ordinary wave). These dependences are important for producing of the quantum electronics and nonlinear optics elements based on the effect of two‐photon absorption under extreme condition (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Experiments and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Space polarization and nonlinear absorbability of gyrotropic cadmium diphosphide crystals

Fekeshgazi

Sidenko

Czitrovszky

et al. 2011

Phys. Status Solidi C

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Optically-Pumped Lasing of Doped ZnSe Epitaxial Layers Grown by Metal-Organic Vapour-Phase Epitaxy

Yablonskii¹,

Gurskii²,

Луценко³

et al. 1997

phys. stat. sol. (a)

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Laser action in undoped, nitrogen and chlorine doped ZnSe epitaxial layer has been achieved and investigated at pulse optical excitation by N2 laser radiation with a frequency of 1000 Hz from liquid nitrogen temperature up to near room temperature at 270 K. The highest value of ZnSe laser energy and power were E = 5×10−8 J and P = 5 W at Iexc = 800 kW/cm2. The laser line positions in doped samples ZnSe:Cl λ = 450.7 nm) and ZnSe:N λ = 451.2, 451.5, 452.0 and 455.5 nm at different excitation intensities) are shifted to the high wavelength side compared to undoped ZnSe λ = 449.8 nm). It was shown that doping ZnSe with both acceptor or donor impurities as well as using a ZnMgSSe barrier layer between the ZnSe layer and the substrate is favourable to increase PL efficiency and to decrease the laser threshold. The lowest threshold value (130 to 150 kW/cm2) was achieved in ZnSe:N grown with hydrogen carrier gas. The results obtained from measurements of the laser line positions as well as from the evaluation of the nonequilibrium carrier concentration proves that the ZnSe lasing mechanism under excitation by the N2 laser radiation is the recombination in an EHP. We found that under high excitation intensity a degradation of the excited region of the ZnSe takes place causing a decrease of the emission intensity. Under lower excitation power the PL intensity enhances during the course of irradiation.

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Optically pumped stimulated emission in ZnSe

Seymour

Fitzpatrick

Bhargava

1978

IEEE J. Quantum Electron.

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Excitons and phonons in processes of laser oscillation from II-VI semiconductors

Cited by 3 publications

References 0 publications

Space polarization and nonlinear absorbability of gyrotropic cadmium diphosphide crystals

Space polarization and nonlinear absorbability of gyrotropic cadmium diphosphide crystals

Optically-Pumped Lasing of Doped ZnSe Epitaxial Layers Grown by Metal-Organic Vapour-Phase Epitaxy

Optically pumped stimulated emission in ZnSe

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