193-MHZ BEAT LINEWIDTH OF FREQUENCY-STABILIZED LASER-DIODE-PUMPED ND-YAG RING LASERS

被引:24
作者
UEHARA, N
UEDA, K
机构
[1] Institute for Laser Science, University of Electro-Communications, Chofu, Tokyo, 182
关键词
D O I
10.1364/OL.18.000505
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We describe frequency-stabilized laser-diode-pumped Nd:YAG ring lasers locked to a high-transmission and high-finesse reference Fabry-Perot cavity. The cavity has a resonant linewidth of 38.0 kHz, a finesse of 19,400, and a transmission efficiency of 79.4% for the TEM00 mode. We measure the frequency stability by locking two lasers one free spectral range apart and observe the heterodyne beat signal. As a result, the spectral densities of frequency noise are reduced to 10 mHz/square-root Hz, and a beat linewidth of 193 mHz is obtained. The linewidth is 0.73 times the Schawlow-Townes limit.
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页码:505 / 507
页数:3
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