Anomalous wavelength changes of 980-nm pump laser diodes with antireflection coatings

Author

Shigihara, Kimio ; Kawasaki, Kazushige ; Yagi, Tetsuya ; Omura, Etsuji

Author_Institution

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

Volume

16

Issue

5

fYear

2004

fDate

5/1/2004 12:00:00 AM

Firstpage

1245

Lastpage

1247

Abstract

We have observed abrupt wavelength jumps form 980-nm pump laser diodes with an antireflection (AR) coating when the injection currents were changed. The width of the anomalous jumps becomes wider as the cavity length is shortened. It was clarified from theoretical calculations that the phenomenon is caused by narrow mirror loss distributions. It was also confirmed that wide AR coatings or a long cavity can avoid these abrupt wavelength jumps.

Keywords

antireflection coatings; electro-optical effects; laser cavity resonators; laser mirrors; optical losses; optical pumping; semiconductor optical amplifiers; 980 nm; anomalous wavelength changes; antireflection coatings; cavity length; injection currents; narrow mirror loss; optical fiber amplifiers; pump laser diodes; semiconductor lasers; Coatings; Diode lasers; Erbium-doped fiber amplifier; Laser excitation; Mirrors; Optical pumping; Optical waveguides; Reflectivity; Semiconductor waveguides; Temperature dependence;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.826227

Filename

1291472