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Fiber-laser-based, high-repetition-rate, picosecond ultraviolet source tunable across 329-348 nm

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Devi, Kavita
Kumar, Suddapalli Chaitanya
Ebrahim-Zadeh, Majid
Document typeArticle
Defense date2016-10-15
PublisherOSA
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
ProjectNOVELA ULTRARRAPIDA ULTRABROADBAND OPTICOS PARAMETRICOS OSCILADORES (MINECO-TEC2015-68234-R)
Abstract
We report a compact, fiber-laser-based, high-repetition-rate picosecond source for the ultraviolet (UV), providing multi-tens of milliwatt of average power across 329-348 nm. The source is based on internal sum-frequency-generation (SFG) in a singly-resonant optical parametric oscillator (OPO), synchronously pumped at 532 nm by the second harmonic of a picosecond Yb-fiber laser at 80 MHz repetition rate. Using a 30-mm-long single-grating MgO:sPPLT crystal for the OPO and a 5-mm-long BiB3O6 crystal for intracavity SFG, we have generated up to 115 mW of average UV power at 339.9 nm, with >50 mW over 73% of the tuning range for 1.6 W of input pump power. The UV output exhibits passive rms power stability of ~2.9% rms over 1 min and 6.5% rms over 2 hours, in high beam quality. Angular acceptance bandwidth and cavity length detuning with pump power and crystal temperature have also been studied.
CitationDevi, Kavita; Kumar, Suddapalli Chaitanya; Ebrahim-Zadeh, Majid. Fiber-laser-based, high-repetition-rate, picosecond ultraviolet source tunable across 329-348 nm. "Optics Letters", 15 Octubre 2016, vol. 41, núm. 20, p. 4799-4802. 
URIhttp://hdl.handle.net/2117/100556
ISSN0146-9592
Publisher versionhttps://doi.org/10.1364/OL.41.004799
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