Diddams, S.
, Kirchner, M.
, Fortier, T.
, Braje, D.
, Weiner, A.
and Hollberg, L.
(2009),
Improved signal-to-noise ratio of 10 GHz microwave signals generated with a mode-filtered femtosecond laser frequency comb, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=842543
(Accessed October 22, 2025)
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Improved signal-to-noise ratio of 10 GHz microwave signals generated with a mode-filtered femtosecond laser frequency comb
Published
Author(s)
, , , , A. M. Weiner,
Abstract
We use a Fabry-Perot cavity to optically filter the output of a Ti:sapphire frequency comb to integer multiples of the original 1 GHz mode spacing. This effectively increases the pulse repetition rate which is useful for several applications. In the case of low-noise microwave signal generation, such filtering leads to improved linearity of the high-speed photodiodes that detect the mode-locked laser pulse train. The result is significantly improved signal-to- noise ratio at the 10 GHz harmonic with the potential for a shot- noise limited single sideband phase noise floor near -168 dBc/Hz.Citation
Optics Express
Volume
17
Issue
5
Pub Type
Journals
Download Paper
Keywords
femtosecond laser, frequency comb, microwave synthesis
Citation
Issues
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Created February 18, 2009, Updated February 19, 2017