Dye laser frequency locking to the hyperfine structure (3S1/2, F=2-3P1/2, F=2) of sodium D1 line by using polarization spectroscopy

Kim, Jung Bog; Kong, Hong Jin; Lee, Sang Soo
February 1988
Applied Physics Letters;2/8/1988, Vol. 52 Issue 6, p417
Academic Journal
The frequency of a single-mode dye laser is locked to a hyperfine structure of the sodium D1 line without modulating the laser frequency. The frequency locking method uses the error signal from a dispersion curve generated from the polarization spectroscopic output. The servo loop provides a frequency fluctuation less than ±0.3 MHz for more than 30 min.


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