High-power and highly reliable 1020-nm ridge waveguide laser diodes with small aspect ratio as a pumping source for praseodymium-doped fiber amplifiers

Author

Shigihara, Kimio ; Kawasaki, Kazushige ; Yamamura, Shin´ichi ; Takemoto, Akira ; Yagi, Tetsuya ; Mitsui, Yasuo

Author_Institution

High Frequency & Opt. Semicond. Div., Mitsubishi Electr. Corp., Hyogo, Japan

Volume

15

Issue

5

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

640

Lastpage

642

Abstract

The structure of an asymmetrically expanded optical field normal to the active layer was applied to 1020-nm ridge waveguide laser diodes in order to increase their maximum kink-free output power and reduce the aspect ratio of the output beams. As a result, a kink-free output power of more than 400 mW and an aspect ratio of less than 2.5 were achieved by this structure. Good reliability was also obtained at an output power of 300 mW at 50/spl deg/C.

Keywords

laser reliability; optical fibre amplifiers; optical pumping; praseodymium; quantum well lasers; waveguide lasers; 1020 nm; 300 mW; 400 mW; 50 C; AEON ridge waveguide LDs; Pr-doped fiber amplifier pumping source; asymmetrically expanded optical field; high-power highly reliable 1020-nm ridge waveguide laser diodes; maximum kink-free output power; output beam aspect ratio; quantum-well lasers; reliability; Diode lasers; High power amplifiers; Laser beams; Laser excitation; Optical fiber amplifiers; Optical pumping; Optical waveguides; Power amplifiers; Power generation; Stimulated emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.810259

Filename

1196121