Ef. Stephens et al., ELECTRONICALLY TUNABLE FIBER LASER FOR OPTICAL-PUMPING OF HE-3 AND HE-4, Review of scientific instruments, 67(3), 1996, pp. 843-844
We present in this paper a low threshold, highly stable, integrated fi
ber laser cavity that uses an electronically tunable internal Bragg gr
ating. The fiber laser produced over 5 mW with a spectral width of abo
ut 5 GHz at 1083 nm. The laser was used to achieve 30% polarization of
the 2 S-3(1) metastable states of He-4 in a weak rf discharge cell. (
C) 1996 American Institute of Physics.