Broadband, high gain two-stage optical parametric chirped pulse amplifier using BBO crystals for a femtosecond high-power Ti:sapphire laser system
2012
Yoon, Jin Woo | Lee, Seong Ku | Yu, Tae Jun | Sung, Jae Hee | Jeong, Tae Moon | Lee, Jongmin
We design a two-stage non-collinear optical parametric chirped pulse amplifier using BBO crystals for a high-power Ti:sapphire laser system, and numerically analyze the output characteristics of the OPCPA system. We find optimal phase-matching conditions and calculate the parametric gains as a function of pump intensity and interaction length. By constructing a two-stage OPCPA system using two BBO crystals, we obtain 12 mJ output energy corresponding to a high gain of 10⁷, a pulse duration of 37 fs, and a contrast ratio of 5×10⁻⁸.
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