Current-directionality-induced giant absorption dichroism in III–V semiconductors and its potential for polarization control in vertical cavity surface-emitting lasers

Autor:	B. S. Ryvkin, E. A. Avrutin, A. C. Walker
Rok vydání:	2002
Předmět:	Tunable diode laser absorption spectroscopy Materials science business.industry Physics::Optics General Physics and Astronomy Saturable absorption Dichroism Laser Polarization (waves) law.invention Semiconductor laser theory law Optoelectronics Semiconductor optical gain business Tunable laser
Zdroj:	Journal of Applied Physics. 91:3516-3521
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1450029
Popis:	We theoretically analyze the effect of current-directionality induced dichroism of fundamental absorption in III–V semiconductors with a high nonequilibrium carrier density. Band filling is shown to provide giant values of relative absorption difference for two orthogonal polarizations near the transparency point. Self-adjustment of the transparency point to the incident photon energy due to absorption saturation at high incident optical powers leads to large absorption dichroism in a broad spectral range. The situation we model is relevant to polarization modulation in vertical-cavity surface-emitting laser diodes. A specialized laser construction to achieve this purpose is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b88cb22481fbebb1cca73cb2591187ac https://doi.org/10.1063/1.1450029 Zobrazit plný text záznamu