Chinese Journal of Lasers, Volume. 41, Issue 7, 715004(2014)
Two-Photon Polarization Spectroscopy of Rubidium 4D5/2 State and Its Application for Frequency Stabilization of 1.5 μm Laser
The two-photon polarization spectroscopy (TPPS) of 87Rb atoms is reported based on the 5S1/2-5P3/2-4D5/2 ladder-type atomic system. Compared with other transitions, the cycling transition shows much better signal-to-noise ratio. TPPS cycling transition signal versus intensity of the pumping laser is investigatived. The frequency of a 1529 nm laser diode is stabilized to the 5P3/2(F′=3)-4D5/2(F″=4) hyperfine transition of 87Rb atoms by using TPPS. The minimum value of Allan variance σy(τ) is 1.3×10-11 at the interrogation time τ of 100 s. Compared with the free-running case, this new method remarkably improves the long-term frequency stability of the 1529 nm laser.
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Liu Huifeng, Wang Jie, Yang Guang, Yang Baodong, He Jun, Wang Junmin. Two-Photon Polarization Spectroscopy of Rubidium 4D5/2 State and Its Application for Frequency Stabilization of 1.5 μm Laser[J]. Chinese Journal of Lasers, 2014, 41(7): 715004
Category: Spectroscopy
Received: Jan. 24, 2014
Accepted: --
Published Online: Jun. 24, 2014
The Author Email: Huifeng Liu (850328415@qq.com)