Frequency stabilization of a frequency-doubled 1556-nm source to the 5S_1/2 → 5D_5/2 two-photon transitions of rubidium
- 15 June 2000
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 25 (12) , 905-907
- https://doi.org/10.1364/ol.25.000905
Abstract
Improvements in the power level of sources near 1550 nm and in the efficiency of waveguide frequency doublers enabled us to lock a frequency-doubled source directly to the two-photon transitions near 778 nm. We obtained a sufficiently powerful second-harmonic signal, exceeding 2 mW, by doubling an external-cavity diode laser that was amplified by an erbium-doped fiber amplifier in a periodically poled channel waveguide. Our experimental scheme can be used for realizing compact, high-performance frequency standards near 1550 nm for fiber-optic communication and sensing applications.
Keywords
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