Efficient end-pumped Q-switched 1053 nm Nd:YLF laser with a plane-parallel resonator

Abstract In this study, a compact and efficient Nd:YLF laser at 1053 nm has been reported without inserting optical intracavity element to suppress the stronger line of 1047 nm. According to theoretical analysis and calculation, the thermal focal length of 1047 nm is negative while that of 1053 nm is positive in plane-parallel resonator. Hence 1053 nm laser was stable in this cavity. In our experiment, 7.5 W laser output at σ-polarized 1053 nm has been obtained with optical–optical efficiency of 38.8%. As the pulse repetition rate is 20 kHz, the pulse width is 50 ns and the peak power is calculated to be 7.5 kW.

[1]  J. Auerbach,et al.  Diode-laser-pumped monolithic Nd:YLF laser operating at 1.053 microm. , 1991, Optics letters.

[2]  B Frei,et al.  1053-nm-wavelength selection in a diode-laser-pumped Nd:YLF laser. , 1994, Applied optics.

[3]  Keming Du,et al.  Efficient, high power, Q-switched Nd:YLF slab laser end-pumped by diode stack , 2005 .

[4]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[5]  Evan P. Chicklis,et al.  CW laser operation of Nd:YLF , 1982 .

[6]  D. C. Hanna,et al.  Upconversion-induced heat generation and thermal lensing in Nd:YLF and Nd:YAG , 1998 .

[7]  Zhe Ma,et al.  Thermal stress effects of the diode-end-pumped Nd:YLF slab , 2008 .

[8]  X. H. Zhang,et al.  All-solid-state continuous-wave doubly resonant all-intracavity sum-frequency mixing blue laser at 488 nm , 2009 .

[9]  Y. Lü,et al.  CW light sources at the 589 nm sodium D2 line by sum-frequency mixing of diode pumped neodymium lasers , 2010 .

[10]  J. Jabczynski,et al.  Intracavity optical parametric oscillator pumped by passively Q-switched Nd:YLF laser , 2009 .

[11]  Minglun Gong,et al.  High pulse repetition frequency all-solid-state 1053 nm Nd:YLF laser , 2010 .

[12]  Efficient cw operation of diode-pumped Nd:YLF lasers at 1312.0 and 1322.6 nm for a silver atom optical clock , 2003 .

[13]  X. H. Zhang,et al.  Highly efficient continuous-wave 912 nm Nd:GdVO4 laser emission under direct 880 nm pumping , 2009 .

[14]  D. C. Hanna,et al.  Energy-transfer upconversion and thermal lensing in high-power end-pumped Nd:YLF laser crystals , 1999 .

[15]  Y. Jia,et al.  All-solid-state continuous-wave frequency doubling Nd:YLF/LBO laser with 2.15 W output power at 526 nm , 2010 .