In this Letter, we report on what is, to our knowledge, the first experimental demonstration of yttrium calcium oxyborate (YCOB) for joule-level and broadband non-collinear optical parametric chirped-pulse amplification centered at 800 nm. Based on a Ti:sapphire chirped-pulse amplification front end, an amplified signal energy of 3.36 J was generated with a pump of 35 J in the crystal. Compressed pulse duration of 44.3 fs, with a bandwidth of 49 nm, was achieved. The results confirm that YCOB crystal is another potential alternative as a final amplifier besides Ti:sapphire in a petawatt laser at 800 nm.
© 2012 Optical Society of America
Original Manuscript: February 8, 2012
Revised Manuscript: March 21, 2012
Manuscript Accepted: March 30, 2012
Published: May 14, 2012
Lianghong Yu, Xiaoyan Liang, Jinfeng Li, Anhua Wu, Yanqing Zheng, Xiaoming Lu, Cheng Wang, Yuxin Leng, Jun Xu, Ruxin Li, and Zhizhan Xu, "Experimental demonstration of joule-level non-collinear optical parametric chirped-pulse amplification in yttrium calcium oxyborate," Opt. Lett. 37, 1712-1714 (2012)