Effect of linewidth enhancement factor in 1.55-um MWQ high-power laser diodes

Autor:	Il Ki Han, Jung Ii Lee, Si Hyung Cho
Rok vydání:	2002
Předmět:	Materials science business.industry Injection seeder Laser Power (physics) Semiconductor laser theory law.invention Protein filament Full width at half maximum Laser linewidth Optics law Optoelectronics business Diode
Zdroj:	Materials and Devices for Optical and Wireless Communications.
ISSN:	0277-786X
DOI:	10.1117/12.481055
Popis:	1.55 μm­ multi-quantum well (MQW) broad area laser diodes with different linewidth enhancement factor (a-factor) of 2 and 4 were fabricated. The far-fields of the laser diodes were measured. It was observed that the full width half maximum (FWHM) of the far-fields and the filamentations were reduced in the laser diodes whose α-factor is 2 rather than 4. As injection current increased, the FWHM of the far-fields also increased regardless of α-factor. This phenomenon was explained by reduction of filament spacing as injection current increased
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a07fd1b2993fe1567e2067359d5e4def https://doi.org/10.1117/12.481055 Zobrazit plný text záznamu