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Optical parametric chirped pulse amplification based on photonic crystal fibre |
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| Authors: | Wang He-Lin Yang Ai-Jun Leng Yu-Xin Wang Cheng Xu Zhi-Zhan Hou Lan-Tian |
| Affiliation: | College of Science, Zhejiang University of Technology, Hangzhou 310023, China; State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Institute of Infrared Fibre and Sensor Technology, School of Information Technology and Engineering, Yanshan University, Qinhuangdao 066004, China |
| Abstract: | A compact two-stage optical parametric chirped pulse amplifier based on photonic crystal fibre is demonstrated. A 1064-nm soliton pulse is obtained in a home-made photonic crystal fibre (PCF) with femtosecond pulse pumping and then amplified to 2 mJ in an Nd:YAG regenerative amplifier. After the amplified pulses pass through the LBO crystal, the 532-nm double-frequency light with an energy of 0.8 mJ and a duration of over 100 ps at 10-Hz repetition rate is generated as a pump source in the following two-stage optical parametric amplification (OPA). The 850-nm chirped signal light gain from the stretcher is 1.5 × 104 in the first-stage OPA while it is 120 in the second-stage OPA. The total signal gain of optical parametric chirped pulse amplification (OPCPA) can reach 1.8 × 106. |
| Keywords: | ultra-fast laser optical parametric amplification photonic crystal fibre |
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