Iodine stabilization of a diode laser in the optical communication band.
The iodine molecule has frequently been used as a frequency reference from the green to the near-infrared wavelength region (500-900 nm). We describe the frequency locking of the second-harmonic signal of a 197.2-THz (1520.25-nm) distributed-feedback diode laser to the absorption lines of the iodine hyperfine structure; a frequency jitter below 0.1 MHz was achieved at a 300-ms time constant. This scheme provides a simple, compact, and high-performance frequency reference in the optical communication band.
Chui
Hsiang-Chen
HC
Department of Electrical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan. d897916@alumni.nthu.edu.tw
Shaw
Sen-Yen
SY
Ko
Ming-Sheng
MS
Liu
Yi-Wei
YW
Shy
Jow-Tsong
JT
Lin
Tyson
T
Cheng
Wang-Yau
WY
Roussev
Rostislav V
RV
Fejer
Martin M
MM