Low Instability, Low Phase-noise Femtosecond Optical Frequency Comb Microwave Synthesizer
نویسندگان
چکیده
The ability of a frequency comb from a femtosecond mode-locked laser to faithfully reproduce the properties of optical oscillators at microwave frequencies is examined. The fractional frequency instability of the femtosecond comb microwave synthesizer is 2 x 10/τ, and could improve by at least a factor of 10 upon elimination of excess photodetection noise. Phase-noise levels are also examined. The femtosecond comb frequency synthesizer is compared to other highperformance microwave oscillators and synthesizers and is found to be among the best available. With the realization of predicted improvements in phase-noise and stability for the femtosecond combs and optical frequency standards, the femtosecond comb could eventually synthesize the highest quality microwaves.
منابع مشابه
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