Continuous-wave and passively Q-switched cryogenic Yb:KLu(WO_4)_2 laser | Zendy

Petr Navrátil | Zendy; Venkatesan Jambunathan | Zendy; Samuel Paul David | Zendy; Fangxin Yue | Zendy; Josep María Serres | Zendy; Xavier Mateos | Zendy; Magdalena Aguiló | Zendy; Francesc Dı́az | Zendy; Uwe Griebner | Zendy; Valentin Petrov | Zendy; Antonio Lucianetti | Zendy; Tomáš Mocek | Zendy

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Continuous-wave and passively Q-switched cryogenic Yb:KLu(WO_4)_2 laser

Author(s) -

Petr Navrátil,

Venkatesan Jambunathan,

Samuel Paul David,

Fangxin Yue,

Josep María Serres,

Xavier Mateos,

Magdalena Aguiló,

Francesc Dı́az,

Uwe Griebner,

Valentin Petrov,

Antonio Lucianetti,

Tomáš Mocek

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.025886

Subject(s) - materials science , optics , laser , slope efficiency , q switching , pulse duration , crystal (programming language) , continuous wave , diode , pulse width modulation , power (physics) , optoelectronics , fiber laser , physics , quantum mechanics , computer science , programming language

We study cryogenic laser operation of an Yb-doped KLu(WO 4 ) 2 crystal pumped with a volume Bragg grating (VBG) stabilized diode laser at 981 nm. In the continuous wave laser regime, a maximum output power of 4.31 W is achieved at 80 K with a slope efficiency of 44.0% with respect to the incident pump power. Using a 85% initial transmission Cr:YAG crystal for passive Q-switching, an average output power of 2.11 W is achieved at 100 K for a repetition rate of 19 kHz. The pulse energy, pulse duration and peak power amount to 111 µJ, 231 ns and 0.48 kW, respectively.

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