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Title: Development of stable, narrow spectral line-width, fiber delivered laser source for spin exchange optical pumping

In this study, 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). Finally, 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.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division. Center for Engineering Science Advanced Research
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Instrument and Source Development Division. Spallation Neutron Source
Publication Date:
OSTI Identifier:
1185953
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Applied Optics
Additional Journal Information:
Journal Volume: 54; Journal Issue: 17; Journal ID: ISSN 1559-128X
Publisher:
Optical Society of America
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Laboratory Directed Research and Development Program
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE semiconductor lasers; diode laser arrays; volume gratings