High-efficiency single-pass cw quasi-phase-matched frequency doubling based on PP-MgO:SLT
Zhang Bai-Gang (张百钢)abc, Yao Jian-Quan (姚建铨)abc, Lu Yang (路洋)a, Xu De-Gang (徐德刚)a, Ding Xin (丁欣)a, Wang Peng (王鹏)a, Zhang Tie-Li (张铁犁)a, Ji Feng (纪峰)a
a College of Precision Instrument and Opto-Electronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China; b Cooperated Institute of Nankai University and Tianjin University, Tianjin 300072, Chinac Key Laboratory of Optoelectric Information Science and Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
Abstract We demonstrate a single-pass cw quasi-phase-matched (QPM) frequency doubling based on periodically poled MgO-doped stoichiometric lithium tantalate (PP-MgO:SLT) with crystal length of 20mm. For the maximum 1064nm fundamental power of 7.69W, the maximum conversion efficiency and the maximum output second-harmonic power are 11.8% and 905mW, respectively. In the experiment we found that the optimum temperature of the oven for PP-MgO:SLT should be adjusted with the change of the fundamental power and the focal length. In addition, angular acceptance bandwidth and temperature acceptance bandwidth are studied. Their experimental results are in good agreement with the theoretical calculations.
Received: 14 June 2004
Revised: 29 September 2004
Accepted manuscript online:
PACS:
42.65.Ky
(Frequency conversion; harmonic generation, including higher-order harmonic generation)
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 60278001 and 10474071), the Science & Technology Cooperation Foundation of Nankai University and Tianjin University, the Ministry of Education, the Ph.D. Programme Foundation
Cite this article:
Zhang Bai-Gang (张百钢), Yao Jian-Quan (姚建铨), Lu Yang (路洋), Xu De-Gang (徐德刚), Ding Xin (丁欣), Wang Peng (王鹏), Zhang Tie-Li (张铁犁), Ji Feng (纪峰) High-efficiency single-pass cw quasi-phase-matched frequency doubling based on PP-MgO:SLT 2005 Chinese Physics 14 353
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