Stable and widely tunable dual-wavelength continuous-wave operation of a semiconductor laser in a novel Fabry-Perot grating-lens external cavity

Author

Lee, Ka-Suen ; Shu, Chester

Author_Institution

Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong

Volume

33

Issue

10

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

1832

Lastpage

1838

Abstract

We propose and experimentally demonstrate an external-cavity configuration for a 1.5-μm InGaAsP semiconductor laser to generate tunable dual-wavelength optical output over a wavelength range of 60.8 nm. The Fabry-Perot (FP) grating-lens external cavity consists of a FP filter, a diffraction grating, a converging lens, and a totally reflecting mirror. The dual wavelength CW output has a spectral separation of 0.9 nm and a side-mode-suppression ratio of over 25 dB throughout the tuning range. The relative intensity variation between the two lasing wavelengths is smaller than 1.2 dB without any observable mode hopping

Keywords

Fabry-Perot resonators; III-V semiconductors; antireflection coatings; diffraction gratings; gallium arsenide; indium compounds; laser cavity resonators; laser mirrors; laser stability; laser tuning; lenses; semiconductor lasers; 1.5 mum; AR coating; FP filter; Fabry-Perot grating-lens external cavity; InGaAsP; InGaAsP semiconductor laser; converging lens; diffraction grating; relative intensity variation; side-mode-suppression ratio; spectral separation; totally reflecting mirror; tunable dual-wavelength continuous-wave operation; tunable dual-wavelength optical output; Arrayed waveguide gratings; Laser stability; Laser tuning; Optical feedback; Optical filters; Optical resonators; Optical sensors; Semiconductor laser arrays; Semiconductor lasers; Tunable circuits and devices;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.631289

Filename

631289