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Frequency stabilization of a frequency-doubled 197.2 THz distributed feedback diode laser on rubidium 5S1/2→7S1/2 two-photon transitions
Journal article   Peer reviewed

Frequency stabilization of a frequency-doubled 197.2 THz distributed feedback diode laser on rubidium 5S1/2→7S1/2 two-photon transitions

Hsiang-Chen Chui, Ming-Sheng Ko, Yi-Wei Liu, Tyson Lin, Jow-Tsong Shy, Sen-Yen Shaw, Rostislav V. Roussev and Martin M. Fejer
Optics and Lasers in Engineering, Vol.44(5), pp.479-485
05/2006
DOI: https://doi.org/10.1016/j.optlaseng.2005.03.005

Abstract

Frequency stabilization Nonlinear optics Rubidium Two-photon spectroscopy WDM systems
A 197.2 THz (1520.2 nm) ITU-T grid distributed feedback (DFB) diode laser is frequency stabilized at 197.198 THz by 1ocking its second harmonic (SH) signal on the rubidium 5S 1/2 →7S 1/2 two-photon transition at 394.396 THz (760.1 nm). With 100 mW from the DFB diode laser and amplifying by an erbium-doped fiber amplifier, we obtain an SH power of 15 mW using a periodically poled lithium niobate (PPLN) waveguide frequency doubler. The stability was 2×10 -11 (10 s), corresponding to a frequency variation of 4 kHz at 1520.2 nm. Our scheme provides a compact and high performance frequency reference in the communication band. © 2005 Elsevier Ltd. All rights reserved.

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