Ho:KRE(WO4)2, RE=(Y, Gd, Lu), CW laser performance near 2.1 micron under resonant pumping by a Tm:KLu(WO4)2 laser

Venkatesan Jambunathan; Xavier Mateos; Maria Cinta Pujol; Joan Josep Carvajal; Francesc Díaz; Magdalena Aguiló; Uwe Griebner; Valentin Petrov

doi:10.1117/12.907127

15 February 2012 Ho:KRE(WO₄)₂, RE=(Y, Gd, Lu), CW laser performance near 2.1 micron under resonant pumping by a Tm:KLu(WO₄)₂ laser

Venkatesan Jambunathan, Xavier Mateos, Maria Cinta Pujol, Joan Josep Carvajal, Francesc Díaz, Magdalena Aguiló, Uwe Griebner, Valentin Petrov

Author Affiliations +

Proceedings Volume 8235, Solid State Lasers XXI: Technology and Devices; 823517 (2012) https://doi.org/10.1117/12.907127
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Continuous-wave (CW) lasing of Ho in KRE(WO₄)₂ (RE=Y, Gd, Lu) crystals has been compared using in-band pumping by a diode pumped Tm:KLu(WO₄)₂ laser under identical conditions at room temperature. The three monoclinic double tungstate hosts perform similarly with the maximum output power obtained for Ho:KY(WO₄)₂, 406 mW with slope efficiency of 59.9%. For Ho:KLu(WO₄)₂ the maximum power reached 392 mW but the slope efficiency was slightly higher, 61.6%. Ho:KGd(WO₄)₂, for which the ionic radius difference between dopant and substituted ions is maximum, generated an output power of 368 mW with slope efficiency of 53.2%.

Citation Download Citation

Venkatesan Jambunathan, Xavier Mateos, Maria Cinta Pujol, Joan Josep Carvajal, Francesc Díaz, Magdalena Aguiló, Uwe Griebner, and Valentin Petrov "Ho:KRE(WO₄)₂, RE=(Y, Gd, Lu), CW laser performance near 2.1 micron under resonant pumping by a Tm:KLu(WO₄)₂ laser", Proc. SPIE 8235, Solid State Lasers XXI: Technology and Devices, 823517 (15 February 2012); https://doi.org/10.1117/12.907127

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