Thermal index guiding in gain-guided blue-green II–VI semiconductor lasers

Autor:	J. M. Gaines, Maarten Buijs, Kevin W. Haberern, Rudy Tijburg
Rok vydání:	1996
Předmět:	Materials science business.industry Physics::Optics General Physics and Astronomy Near and far field Refractive index profile Laser Semiconductor laser theory law.invention Optics law Optoelectronics Quantum efficiency business Refractive index Quantum well Pulse-width modulation
Zdroj:	Journal of Applied Physics. 79:578
ISSN:	0021-8979
DOI:	10.1063/1.360799
Popis:	We have studied the lateral waveguiding properties of gain‐guided and index‐guided II–VI lasers under pulsed conditions and their influence on threshold current density Jth and differential quantum efficiency η. Thermal index guiding was found to reduce the astigmatism of the gain‐guided devices. The thermally induced lateral field confinement leads to a lowering of Jth and an increase of η with pulse width with a maximum after a few μs because of maximum overlap of the near field with the gain profile. For the index‐guided devices the lateral waveguiding is fully determined by the built‐in refractive index profile and no dependencies on pulse width are observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bc4b79032666527ce354abb30fd240de https://doi.org/10.1063/1.360799 Zobrazit plný text záznamu