Continuous-wave laser generation at ~21 µm in Ho:KRE(WO_4)_2 (RE = Y, Gd, Lu) crystals: a comparative study | Zendy

Venkatesan Jambunathan | Zendy; Xavier Mateos | Zendy; María Cinta Pujol | Zendy; Joan J. Carvajal | Zendy; Francesc Dı́az | Zendy; Magdalena Aguiló | Zendy; Uwe Griebner | Zendy; Valentin Petrov | Zendy

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Continuous-wave laser generation at ~21 µm in Ho:KRE(WO_4)_2 (RE = Y, Gd, Lu) crystals: a comparative study

Author(s) -

Venkatesan Jambunathan,

Xavier Mateos,

María Cinta Pujol,

Joan J. Carvajal,

Francesc Dı́az,

Magdalena Aguiló,

Uwe Griebner,

Valentin Petrov

Publication year - 2011

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.19.025279

Subject(s) - laser , monoclinic crystal system , materials science , optics , slope efficiency , diode , continuous wave , laser diode , laser pumping , optoelectronics , fiber laser , physics , chemistry , crystallography , crystal structure

The laser performance of the monoclinic Ho:RE(WO4)2 (RE = Y, Gd, Lu) crystals is compared under identical experimental conditions. The comparison deals with the laser transition of Ho3+ at ~2.1µm by using two different pump sources, a diode laser operating at 1941 nm and a diode-pumped Tm:KLu(WO4)2 laser operating at 1946 nm. The results show internal slope efficiencies of ~60% and output powers exceeding 400 mW. The laser performance of Ho:KY(WO4)2 and Ho:KLu(WO4)2 is quite similar and superior to Ho:KGd(WO4)2.

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