TY - JOUR
T1 - Modulation-free frequency stabilization of a grating-external-cavity diode laser by magnetically induced sub-doppler dichroism in cesium vapor cell
AU - Wang, Junmin
AU - Yan, Shubin
AU - Wang, Yanhua
AU - Liu, Tao
AU - Zhang, Tiancai
PY - 2004/3
Y1 - 2004/3
N2 - Thanks to the Zeeman effect and the saturation absorption spectroscopic technique, magnetically induced sub-Doppler dichroism has been experimentally demonstrated in a cesium vapor cell. A dispersion-like frequency-discriminating signal is obtained by this sub-Doppler dichroism. The phase-sensitive detection via lock-in is no longer required because there is no frequency dither on the laser. A grating-external-cavity 852 nm diode laser is frequency-stabilized to cesium 6 2S1/2 F = 4-6 2p3/2 F = 4, 5 crossover by this modulation-free locking scheme. Compared with a frequency fluctuation of approximately 12 MHz under free-running conditions, a typical frequency jitter of less than +/- 260kHz in 50s was estimated in the preliminary stabilization. This locking scheme is relatively simple, and it can avoid extra noise due to the direct frequency dither on the laser source in the conventional saturation absorption locking technique.
AB - Thanks to the Zeeman effect and the saturation absorption spectroscopic technique, magnetically induced sub-Doppler dichroism has been experimentally demonstrated in a cesium vapor cell. A dispersion-like frequency-discriminating signal is obtained by this sub-Doppler dichroism. The phase-sensitive detection via lock-in is no longer required because there is no frequency dither on the laser. A grating-external-cavity 852 nm diode laser is frequency-stabilized to cesium 6 2S1/2 F = 4-6 2p3/2 F = 4, 5 crossover by this modulation-free locking scheme. Compared with a frequency fluctuation of approximately 12 MHz under free-running conditions, a typical frequency jitter of less than +/- 260kHz in 50s was estimated in the preliminary stabilization. This locking scheme is relatively simple, and it can avoid extra noise due to the direct frequency dither on the laser source in the conventional saturation absorption locking technique.
KW - Cesium atom
KW - Frequency stabilization
KW - Magnetically induced dichroism
KW - Modulation free
KW - Sub-Doppler spectrosoopy
UR - http://www.scopus.com/inward/record.url?scp=2442552102&partnerID=8YFLogxK
U2 - 10.1143/JJAP.43.1168
DO - 10.1143/JJAP.43.1168
M3 - Article
AN - SCOPUS:2442552102
SN - 0021-4922
VL - 43
SP - 1168
EP - 1171
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
IS - 3
ER -