论文信息 - Optically pumped rubidium as a frequency standard at 196 THz

Optically pumped rubidium as a frequency standard at 196 THz

The performance of 196.0-THz (1529-nm) DFB lasers frequency-locked to absorption lines of a rubidium vapor optically pumped at 384.2 THz (780.2 nm) is studied. The absorption profiles of the pumped vapor are measured under various conditions and compared with theoretical predictions. A bright resonance resulting from the cascade of two cycling transitions is characterized both experimentally and theoretically. The measured frequency stability of a DFB laser frequency-locked to this line reaches a level of 2/spl times/10/sup -10/ for an averaging time of 100 s when compared to a similar laser locked to an acetylene line. >

[1] H. Sasada,et al. Wavenumber measurements of sub-Doppler spectral lines of Rb at 1.3 mu m and 1.5 mu m , 1992, IEEE Photonics Technology Letters.

[2] Michel Tetu,et al. Multiwavelength sources using laser diodes frequency-locked to atomic resonances , 1989 .

[3] M. De Labachelerie,et al. Frequency Locking Of A 850 nm External-Cavity Semiconductor Laser On A Doppler-Free Cs-D2 Line , 1987, Other Conferences.

[4] Michel Tetu,et al. Observation and characterization of 87Rb resonances for frequency-locking purpose of a 1.53-μm DFB laser , 1993, Other Conferences.

[5] Geoffrey Duxbury,et al. DOUBLE RESONANCE SPECTROSCOPY OF LASER-COOLED RB ATOMS , 1994 .

[6] S. L. Gilbert. High resolution spectroscopy using fiber lasers , 1991 .

[7] Cyr,et al. Absorption profiles of alkali-metal D lines in the presence of a static magnetic field. , 1990, Physical review. A, Atomic, molecular, and optical physics.