Abstract
We have locked two 1064-nm diode-laser-pumped Nd:YAG lasers to two ultralow-expansion glass-ceramic Fabry–Perot interferometers by using the Pound–Drever discriminator technique. The interferometers have finesses of approximately 200,000 and 5-kHz linewidths and are housed in separate temperature-stabilized vacuum vessels. Allan variance measurements of the beat note between the two lasers are as low as 10−14 for delay times between 0.5 and 2 s and increase with the time interval for times longer than 2 s, an improvement of 4 orders of magnitude over the free-running performance. Daily variations of the beat-note frequency are less than 1 MHz, which corresponds to a relative temperature change of approximately 100 mK between the interferometers.
© 1993 Optical Society of America
Full Article | PDF ArticleMore Like This
T. Day, E. K. Gustafson, and R. L. Byer
Opt. Lett. 15(4) 221-223 (1990)
Noboru Uehara and Ken-ichi Ueda
Opt. Lett. 18(7) 505-507 (1993)
G. T. Harvey and L. F. Mollenauer
Opt. Lett. 18(2) 107-109 (1993)