Output characteristics of actively Q-switched Ho:LuVO₄ laser at room temperature.

A compact continuous wave (CW) and actively Q-switched (AQS) Ho:LuVO4 laser pumped by a 1.94 μm Tm: YAP laser is demonstrated. The performance of the laser was investigated by changing the output coupler. The maximum output power of 4.1 W at 2058.43 nm in CW regime is obtained at the maximum absorbed pump power of 12.3 W. The minimum pulse width of 29.3 ns was obtained at Pulse Repetition Frequency (PRF) of 20 kHz with the same output coupler corresponding to a peak power of 6.9 kW. The maximal output power is 4.1 W with center wavelength of 2058.43 nm at PRF of 40 kHz, corresponding to slope efficiency of 43.0% with respect to absorbed pump power. The M2 factors measured by the traveling knife-edge method are 1.04 in parallel a-axis and 1.08 in parallel c-axis with diffraction limited beam quality.

[1]  Heinz P. Weber,et al.  Laser operation and spectroscopy of Tm: Ho: GdVO4 , 1994 .

[2]  B. Yao,et al.  Resonantly pumped room temperature Ho:LuVO₄ laser. , 2014, Optics letters.

[3]  M. Schellhorn.  High-energy, in-band pumped Q-switched Ho(3+):LuLiF(4) 2 microm laser. , 2010, Optics letters.

[4]  Evan P. Chicklis,et al.  High-Power/High-Brightness Diode-Pumped 1.9- m Thulium and Resonantly Pumped 2.1- m Holmium Lasers , 2000 .

[5]  Helena Jelinkova,et al.  Comparative optical study of thulium-doped Y V O 4 , Gd V O 4 , and Lu V O 4 single crystals , 2006 .

[6]  I. Izhnin,et al.  The comparative analysis and optimization of the free-running Tm3+:YAP and Tm3+:YAG microlasers , 2007 .

[7]  V. Chani,et al.  Comparative study of optical and scintillation properties of YVO4, (Lu0.5Y0.5)VO4, and LuVO4 single crystals , 2011 .

[8]  M. Sigrist.  Trace gas monitoring by laser photoacoustic spectroscopy and related techniques (plenary) , 2003 .

[9]  B. Yao,et al.  High power Q-switched Ho: YVO4 laser resonantly pumped by a Tm-fiber-laser , 2014 .

[10]  B. Chakoumakos,et al.  Crystal Structure Refinements of Zircon-Type MVO4 (M = Sc, Y, Ce, Pr, Nd, Tb, Ho, Er, Tm, Yb, Lu) , 1994 .

[11]  Xiaoming Duan,et al.  Efficient Q-switched Ho:GdVO₄ laser resonantly pumped at 1942 nm. , 2014, Optics letters.

[12]  Murat Gulsoy,et al.  Skin tissue ablation by thulium (Tm:YAP) laser at 1980nm , 2009, CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference.

[13]  Y. Ju,et al.  High efficient actively Q-switched Ho:LuAG laser. , 2009, Optics express.

[14]  Y. Ju,et al.  High-efficiency resonantly pumped room temperature Ho:YVO4 laser. , 2011, Optics letters.

[15]  E. Chicklis,et al.  High-power/high-brightness diode-pumped 1.9-/spl mu/m thulium and resonantly pumped 2.1-/spl mu/m holmium lasers , 2000, IEEE Journal of Selected Topics in Quantum Electronics.

[16]  E. Heumann,et al.  Single mode Tm and Tm,Ho:LuAG lasers for LIDAR applications , 2004 .

[17]  Zhengping Wang,et al.  Efficient Tm:LuVO₄ laser at 1.9 μm. , 2011, Optics letters.

[18]  Mark Dubinskii,et al.  Resonantly diode pumped Ho3+:YVO4 2.1-μ laser , 2011, Defense + Commercial Sensing.

[19]  S. Lamrini,et al.  Efficient high-power Ho:YAG laser directly in-band pumped by a GaSb-based laser diode stack at 1.9 μm , 2011, Applied Physics B.