Phase-coherent all-optical frequency division by three


Lee, Dong-Hoon and Klein, Marvin E. and Meyn, Jan-Peter and Wallenstein, Richard and Gross, Petra and Boller, Klaus-Jochen (2003) Phase-coherent all-optical frequency division by three. Physical Review A: Atomic, molecular, and optical physics, 67 (1). 013808. ISSN 1050-2947

Abstract:The properties of all-optical phase-coherent frequency division by 3, based on a self-phase-locked continuous-wave (cw) optical parametric oscillator (OPO), are investigated theoretically and experimentally. The frequency to be divided is provided by a diode laser master-oscillator power-amplifier system operated at a wavelength of 812 nm and used as the pump source of the OPO. Optical self-phase-locking of the OPO signal and idler waves is achieved by mutual injection locking of the signal wave and the intracavity frequency-doubled idler wave. The OPO process and the second-harmonic generation of the idler wave are simultaneously phase matched through quasi-phase-matching using two periodically poled sections of different period manufactured within the same LiNbO3 crystal. An optical self-phase-locking range of up to 1 MHz is experimentally observed. The phase coherence of frequency division by three is measured via the phase stability of an interference pattern formed by the input and output waves of the OPO. The fractional frequency instability of the divider is measured to be smaller than 7.6×10-14 for a measurement time of 10 s (resolution limited). The self-phase-locking characteristics of the cw OPO are theoretically investigated by analytically solving the coupled field equations in the steady-state regime. For the experimental parameters of the OPO, the calculations predict a locking range of 1.3 MHz and a fractional frequency instability of 1.6×10-15, in good agreement with the experimental results.
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Copyright:© 2003 The American Physical Society
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