A Narrow-Linewidth On-Chip Toroid Raman Laser

Author

Lu, Tao ; Yang, Lan ; Carmon, Tal ; Min, Bumki

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Victoria, Victoria, BC, Canada

Volume

47

Issue

3

fYear

2011

fDate

3/1/2011 12:00:00 AM

Firstpage

320

Lastpage

326

Abstract

In this paper, we report a narrow-linewidth on-chip toroid Raman laser. Under free-running condition, we have obtained the minimum fundamental linewidth of 3 Hz and the maximum unidirectional output power of 223 μW. Lasing under the same condition in continuous-wave mode over 90 min is achieved at an average power level of 21 μW and a standard deviation of 0.17 μW. We further derived the frequency noise spectrum and identified an enhancement of frequency noise due to Kerr non linearity. In addition, we have observed the shifting of relaxation oscillation frequency as a consequence of weak mode splitting.

Keywords

Raman lasers; laser modes; laser noise; optical Kerr effect; solid lasers; Kerr nonlinearity; continuous-wave mode; frequency 3 Hz; frequency noise spectrum; fundamental linewidth; mode splitting; narrow-linewidth on-chip toroid Raman laser; power 223 muW; relaxation oscillation frequency; standard deviation; unidirectional output power; Frequency measurement; Laser modes; Laser noise; Optical pumping; Pump lasers; Laer noise; Raman lasers; optical resonators; phase noise;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2010.2087742

Filename

5716918