B. Willke et al., Frequency stabilization of a monolithic Nd : YAG ring laser by controllingthe power of the laser-diode pump source, OPTICS LETT, 25(14), 2000, pp. 1019-1021
The frequency of a 700-mW monolithic nonplanar Nd:YAG ring laser (NPRO) dep
ends, with a large coupling coefficient (megahertz per milliwatt), on the p
ower of its laser-diode pump source. Using this effect, we demonstrate freq
uency stabilization of a NPRO to a frequency reference by feeding back to t
he current of its pump diodes. We achieved an error-point frequency noise s
maller than 1 mHz/root Hz and, simultaneously, a reduction of the power noi
se of the NPRO by 10 dB without an additional power-stabilization feedback
system. (C) 2000 Optical Society of America OCIS codes: 120.5050, 140.3530,
120.3180.