Phase-Conjugate External-Cavity Diode Laser

Author

Vainio, M.

Author_Institution

Metrol. Res. Inst., Helsinki

Volume

18

Issue

19

fYear

2006

Firstpage

2047

Lastpage

2049

Abstract

An external-cavity diode laser based on self-pumped phase-conjugate optical feedback is reported. An antireflection-coated diode laser is subjected to strong phase-conjugate feedback from a photorefractive Ce-doped BaTiO₃ crystal. This provides narrow laser linewidth and good stability. Inherent linewidth of 25 kHz and relative frequency stability of 1.5times10^-8 (at 100 s) are demonstrated. Due to phase-conjugate feedback, the laser is insensitive to mechanical drifts and misalignment of the feedback element

Keywords

barium compounds; cerium; laser cavity resonators; laser feedback; laser stability; optical phase conjugation; optical pumping; photorefractive materials; semiconductor lasers; spectral line narrowing; 100 s; 25 kHz; BaTiO₃:Ce; antireflection coating; external-cavity diode laser; laser stability; narrow laser linewidth; optical feedback; optical phase conjugation; photorefractive Ce-doped BaTiO₃ crystal; relative frequency stability; self pumping; Diode lasers; Frequency; Laser beams; Laser feedback; Laser stability; Lenses; Optical feedback; Photorefractive materials; Semiconductor laser arrays; Semiconductor lasers; Phase conjugation; semiconductor lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2006.883294

Filename

1703631