Diddams, S.
, Peters, E.
, Fendel, P.
, Reinhardt, S.
, Hansch, T.
and Udem, T.
(2009),
A deep-UV optical frequency comb at 205 nm, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904616
(Accessed October 1, 2025)
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A deep-UV optical frequency comb at 205 nm
Published
Author(s)
, E Peters, P Fendel, S Reinhardt, T W. Hansch, T Udem
Abstract
By frequency quadrupling a picosecond pulse train from a Ti:sapphire laser at 820 nm we generate a frequency comb at 205 nm with nearly bandwidth-limited pulses. The nonlinear frequency conversion is accomplished by two successive frequency doubling stages that take place in resonant cavities that are matched to the pulse repetition rate of 82 MHz. This allows for an overall efficiency of 4.5 % and produces an output power of up to 70 mW for a few minutes and 25 mW with continuous operation for hours. Such a deep UV frequency comb may be employed for direct frequency comb spectroscopy in cases where it is less efficient to convert to these short wavelengths with continuous wave lasers.Citation
Optics Express
Volume
17
Issue
11
Pub Type
Journals
Download Paper
Keywords
ultraviolet laser, frequency comb, nonlinear optics
Citation
Issues
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Created May 25, 2009, Updated February 19, 2017