We describe a method to frequency narrow multielement high-power diode bars. Using a commercial 60-W, 49-element, 1-cm-long diode array bar at 795 nm running at 45 W, we narrow the linewidth from 1000 to 64 GHz with only a loss of 33% in output power. The resulting laser light is well suited for spin-exchange optical pumping of noble gas nuclei.
© 2005 Optical Society of America
Original Manuscript: October 4, 2004
Manuscript Accepted: December 3, 2004
Published: May 20, 2005
Earl Babcock, Bien Chann, Ian A. Nelson, and Thad G. Walker, "Frequency-narrowed diode array bar," Appl. Opt. 44, 3098-3104 (2005)