|Title:||Power scale-up of high-pulse-energy passively Q-switched Nd:YLF laser: influence of negative thermal lens enhanced by upconversion|
|Authors:||Huang, Y. J.|
Tang, C. Y.
Huang, Y. P.
Huang, S. C.
Su, K. W.
Chen, Y. F.
Department of Electrophysics
|Keywords:||passive Q-switching;thermal lens;energy-transfer upconversion;Nd:YLF|
|Abstract:||"We develop a practical method to extend the power scale-up for a laser in a concave-plano cavity to be influenced by a large negative thermal lens. With the developed method, we successfully scale up the output power of a compact high-pulse-energy passively Q-switched Nd:YLF laser at 1053 nm with the Cr4+:YAG crystal as a saturable absorber. At an incident pump power of 12.6 W, the maximum output power under the optimum operation at 1053 nm reaches 2.61 W with a pulse width of 6 ns and a pulse repetition rate of 4.6 kHz. More importantly, we experimentally verify that the energy-transfer upconversion significantly enhances the negative focal length of thermal lens in the passively Q-switched Nd:YLF laser. (C) 2012 by Astro, Ltd."|
|Journal:||LASER PHYSICS LETTERS|
|Appears in Collections:||Articles|
Files in This Item: