Phonon-assisted anisotropy of lasing: prediction for (0001) CdS

Uladzimir V. Zubrytski

doi:10.1117/12.662919

14 April 2006 Phonon-assisted anisotropy of lasing: prediction for (0001) CdS

Uladzimir V. Zubrytski

Proceedings Volume 6184, Semiconductor Lasers and Laser Dynamics II; 61841W (2006) https://doi.org/10.1117/12.662919
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

Anisotropy has been predicted of the energy flux of radiation in 'isotropic' semiconductor stripe laser pumped with an electron beam. The physical basis of the effect has been delivered by the worked out model of an acoustically active laser medium that directly results in the sought anisotropy of the output energy flux of radiation emanating from the cavity if a rate of the acoustic phonons generation is taking into account. Profound exposing of an integral output lasing power to an excited phonon fluxes has been derived for the pulsed strip-light-emitters designed on the basis of 6mm semiconductors. Quantitative analysis has been done for the strip laser with a fixed slit aperture on the basal plane of the (0001) CdS plate. For the longitudinal geometry of pumping, in the framework of the model put forward a difference has been predicted in the integral output power of lasing delivered through the output (0001) face of the devices in the form ΔP = A_mτ_wj²f, where A_m is the medium factor, τ_w is the photon lifetime relatively to the output, j is the pumping current density, f is the cavity form factor. Overall, acoustic impact has been revealed on the lasing anisotropy, an additional source has been manifested of the pumping losses, relationship has been established between the strip laser beam shape and the laser performance, the method based on the carrier lifetime approach has been additionally proposed to study phenomenon, understanding and direct calculating have been advanced of the performance of the considered type emitters.

Citation Download Citation

Uladzimir V. Zubrytski "Phonon-assisted anisotropy of lasing: prediction for (0001) CdS", Proc. SPIE 6184, Semiconductor Lasers and Laser Dynamics II, 61841W (14 April 2006); https://doi.org/10.1117/12.662919

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KEYWORDS

Anisotropy

Acoustics

Cadmium sulfide

Phonons

Electron beams

Crystals

Semiconductor lasers

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