Tunable continuous-wave deep-ultraviolet laser based on Ce:LiCAF

Barbara Wellmann, David J. Spence, David W. Coutts

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We demonstrate chopped-cw lasing in a Ce:LiCAF oscillator directly generating deep-UV light around 290 nm. The cw output was achieved by asynchronous pumping of a Ce:LiCAF oscillator by a mode-locked frequency quadrupled Nd:YVO4 laser that generates 23 ps pulses of 266 nm light at a repetition rate of 80 MHz. The pump laser was chopped with 8.3% duty cycle to minimize thermal effects in the frequency quadrupling stage. The maximum output power achieved was 384 mW when pumped with 3.3 W of pulsed 266 nm light, with a slope efficiency of 33%. The laser output was tunable from 286 to 295 nm with the potential to be broadened over the full gain bandwidth of Ce:LiCAF from 280 to 315 nm.

LanguageEnglish
Pages1306-1309
Number of pages4
JournalOptics Letters
Volume39
Issue number5
DOIs
Publication statusPublished - 1 Mar 2014

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ultraviolet lasers
continuous radiation
oscillators
output
laser outputs
lasers
temperature effects
lasing
repetition
pumping
pumps
slopes
bandwidth
cycles
pulses

Cite this

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abstract = "We demonstrate chopped-cw lasing in a Ce:LiCAF oscillator directly generating deep-UV light around 290 nm. The cw output was achieved by asynchronous pumping of a Ce:LiCAF oscillator by a mode-locked frequency quadrupled Nd:YVO4 laser that generates 23 ps pulses of 266 nm light at a repetition rate of 80 MHz. The pump laser was chopped with 8.3{\%} duty cycle to minimize thermal effects in the frequency quadrupling stage. The maximum output power achieved was 384 mW when pumped with 3.3 W of pulsed 266 nm light, with a slope efficiency of 33{\%}. The laser output was tunable from 286 to 295 nm with the potential to be broadened over the full gain bandwidth of Ce:LiCAF from 280 to 315 nm.",
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Tunable continuous-wave deep-ultraviolet laser based on Ce:LiCAF. / Wellmann, Barbara; Spence, David J.; Coutts, David W.

In: Optics Letters, Vol. 39, No. 5, 01.03.2014, p. 1306-1309.

Research output: Contribution to journalArticleResearchpeer-review

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