Absorption loss coefficient of the active layer for 1.48-μm bulk and MQW lasers

Author

Kakimoto, Syouichi ; Watanabe, Hitoshi

Author_Institution

Optoelectron. & Microwave Devices R&D Lab., Mitsubishi Electr. Corp., Hyogo, Japan

Volume

34

Issue

1

fYear

1998

fDate

1/1/1998 12:00:00 AM

Firstpage

110

Lastpage

112

Abstract

It is shown that the absorption loss coefficient of the active layer for 1.48-μm bulk lasers is 66 cm^-1 which is between 45 and 107 cm^-1 for 1.3-μm bulk lasers and for 1.55-μm bulk lasers, respectively. It is also described that the absorption loss coefficient of the active layer for 1.48-μm multiple-quantum-well (MQW) lasers is 28 cm^-1 which is about two-fifths of that for 1.48-μm bulk lasers. Therefore, the high slope efficiency of the 1.48-μm MQW lasers is attributed not only to the small optical confinement factor but also to the small absorption loss coefficient of the active layer

Keywords

Fabry-Perot resonators; infrared sources; laser beams; laser variables measurement; optical fabrication; optical losses; quantum well lasers; vapour phase epitaxial growth; 1.3 mum; 1.48 mum; 1.55 mum; MQW lasers; absorption loss coefficient; active layer; bulk lasers; multiple-quantum-well lasers; optical confinement factor; slope efficiency; Absorption; Chemical lasers; Fiber lasers; Masers; Optical losses; Optical resonators; Power lasers; Quantum well devices; Quantum well lasers; Semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.655014

Filename

655014