Frequency stabilization of a 1.3 microm laser diode using double resonance optical pumping in the 5P 3/2-6S 1/2 transition of Rb atoms.
The frequency stabilization of a laser diode in the 1.3 microm region using double resonance optical pumping (DROP) spectrum in the 5P(3/2)-6S(1/2) transition of (87)Rb atoms is demonstrated. The signal-to-noise ratio of the DROP spectrum is approximately ten times higher than that of the previous optical-optical double resonance spectrum. The spectral linewidth of the DROP measures 8.4 MHz. When the frequency of a 1.367 microm laser diode is stabilized to the DROP spectrum, the frequency stability is 9 x 10(-12) after 100 s. Also, the wavelength of the frequency-stabilized laser locked to the 5P(3/2)-6S(1/2) transition using a wavelength meter is measured.
Moon
Han Seb
HS
Department of Physics, Pusan National University, Geumjeong-Gu, Busan 609-735, South Korea. hsmoon@pusan.ac.kr