Frequency stabilization of a frequency-doubled 197.2 THz distributed feedback diode laser on rubidium 5S1/2-7S1/2 two-photon transitions
نویسندگان
چکیده
A 197.2THz (1520.2nm) ITU-T grid distributed feedback (DFB) diode laser is frequency stabilized at 197.198THz by 1ocking its second harmonic (SH) signal on the rubidium 5S1/27S1/2 two-photon transition at 394.396THz (760.1 nm). With 100mW from the DFB diode laser and amplifying by an erbium-doped fiber amplifier, we obtain an SH power of 15mW 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. r 2005 Elsevier Ltd. All rights reserved.
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تاریخ انتشار 2006