tailieunhanh - Possibility of generation and amplification to high power of ultraviolet ce: Licaf laser short pulses

We review the recent progresses in generation and amplification of ultraviolet laser emissions using Ce3+:LiCaAlF6 (Ce:LiCAF) material as a gain medium. Basing on comparative studies, we have investigated improvements and proposed possibilities to generate and amplify ultraviolet short-pulse Ce:LiCAF laser emission to high peak power of terawatt. | Communications in Physics, Vol. 24, No. 3S2 (2014), pp. 89-100 DOI: POSSIBILITY OF GENERATION AND AMPLIFICATION TO HIGH POWER OF ULTRAVIOLET CE:LICAF LASER SHORT PULSES PHAM HONG MINH, PHAM VAN DUONG, PHAM HUY THONG, DO QUOC KHANH, AND NGUYEN DAI HUNG Institute of Physics, Vietnam Academy of Science and Technology NOBUHIKO SARUKURA Institute of Laser Engineering, Osaka University, Suita Osaka 565-0871, Japan E-mail: phminh@ Received 20 June 2014 Accepted for publication 20 August 2014 Abstract. We review the recent progresses in generation and amplification of ultraviolet laser emissions using Ce3+ :LiCaAlF6 (Ce:LiCAF) material as a gain medium. Basing on comparative studies, we have investigated improvements and proposed possibilities to generate and amplify ultraviolet short-pulse Ce:LiCAF laser emission to high peak power of terawatt. Keywords: Ce:LiCAF crystal, ultraviolet, short pulse, laser generation, amplification. I. INTRODUCTION High power laser light sources operating in the ultraviolet (UV) spectral region have received a great deal of interest for numerous applications in science and technology such as semiconductor processing, micromachining, remote sensing with Lidar, engine combustion diagnostics, spectroscopy, medicinal and biological applications. . . [1-6]. Hence, there is a great deal of interest for the development of high-power, all-solid-state UV lasers of convenient operating procedures. The existing means to produce tunable UV laser emission is mainly based on frequency conversion using nonlinear crystals such as doubling, tripling and/or mixing of tunable laser emission generated from the primary tunable lasers. However, this way has several disadvantages such as its complexity, high cost, limited spectral bandwidth and tunability, inefficiency, inconvenience and unreliability for airborne measurement in flight or aboard spacecraft applications [1]. The use of rare earth-doped fluorides as .