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

Journal Article · Fri Jun 05 00:00:00 EDT 2015 · Applied Optics

DOI:https://doi.org/10.1364/AO.54.005420· OSTI ID:1185953

Liu, Bo ^[1]; Tong, Xin ^[2]; Jiang, Chenyang ^[2]; Brown, Daniel R. ^[2]; Robertson, Lee ^[2]

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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

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.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Laboratory Directed Research and Development (LDRD) Program
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1185953
• Journal Information: Applied Optics, Vol. 54, Issue 17; ISSN 1559-128X
• Publisher: Optical Society of America
• Country of Publication: United States
• Language: English

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