Crystal growth, optical spectroscopy, and continuous-wave laser operation of Ho:KLu(WO4)2 crystals

被引：16
作者：
Jambunathan, V. [1 ]
Mateos, X. [1 ,2 ]
Pujol, M. C. [1 ]
Carvajal, J. J. [1 ]
Zaldo, C. [3 ]
Griebner, U. [2 ]
Petrov, V. [2 ]
Aguilo, M. [1 ]
Diaz, F. [1 ]
机构：
[1] Univ Rovira & Virgili, Fis & Cristallog Mat & Nanomat FiCMA FiCNA, E-43007 Tarragona, Spain
[2] Max Born Inst Nonlinear Opt & Short Pulse Spect, D-12489 Berlin, Germany
[3] CSIC, Inst Ciencia Mat Madrid, Madrid 28049, Spain
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2014年 / 116卷 / 02期
关键词：
HOLMIUM LASER; HO-YAG; KLU(WO4)(2); TM;
D O I：
10.1007/s00340-013-5720-y
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present the crystal growth, optical spectroscopy, and room temperature continuous-wave (CW) laser operation of monoclinic Ho:KLu(WO4)(2) crystals. Macro defect-free crystals of several dopant concentrations were grown by top-seeded solution growth slow-cooling method. The evolution of unit cell parameters with holmium doping level and temperature was studied using X-ray powder diffraction. The spectroscopic properties were characterized in terms of room- and low-temperature optical absorption and photoluminescence. From low-temperature optical absorption measurements, the energy of the Stark levels was determined. Calculation of the emission and gain cross sections is presented. CW laser action was realized for 3 and 5 at. % Ho-doped KLu(WO4)(2) by in-band pumping using a Tm:KLu(WO4)(2) pump laser. A maximum output power of 507 mW with a slope efficiency of similar to 38 % with respect to the incident power was achieved at 2,080 nm with the Ho:KLu(WO4)(2) laser.
引用
收藏
页码：455 / 466
页数：12
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