Open AccessDevelopment of stable, narrow spectral line-width, fiber delivered laser source for spin exchange optical pumping
Author(s) -
Bo Liu,
Xin Tong,
Chenyang Jiang,
Daniel R. Brown,
Lee Robertson
Publication year - 2015
Publication title -
applied optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 197
ISSN - 0003-6935
DOI - 10.1364/ao.54.005420
Subject(s) - optics , materials science , laser , fiber bragg grating , spectral width , fiber laser , distributed feedback laser , laser linewidth , laser power scaling , optoelectronics , multi mode optical fiber , optical fiber , physics
We developed a stable, narrow spectral line-width, fiber delivered laser source for spin exchange optical pumping. An optimized external cavity equipped with an off-the-shelf volume holographic grating narrowed the spectral line-width of a 100 W high-power diode laser and stabilized the laser spectrum. The laser spectrum showed a high side mode suppression ratio of >30 dB and good long-term stability (center wavelength drifting within ±0.002 nm during 220 h of operation). Our laser is delivered by a multimode fiber with power ~70 W, center wavelength of 794.77 nm, and spectral bandwidth of ~0.12 nm.