A Novel Femtosecond Laser System for Attosecond Pulse Generation. (15th January 2012)

• Record Type: Journal Article
• Authors: Zhu Zhu, Jianqiang Jianqiang; Xie Xie, Xinglong Xinglong; Sun Sun, Meizhi Meizhi; Bi Bi, Qunyu Qunyu; Kang Kang, Jun Jun
• Other Names: Pan Pan Ci-Ling Ci-Ling Academic Editor.
• Is Part Of: Advances in optical technologies. Volume 2012(2012)
• Publication Date: 2012-01-15
• Subjects: Optoelectronics -- Periodicals; Optoelectronics; Physics; Periodicals; Electronic journals; 621.36
• DOI: 10.1155/2012/908976
• Languages: English
• ISSNs: 1687-6393

Abstract

Abstract : We report a novel ultrabroadband high-energy femtosecond laser to be built in our laboratory. A 7-femtosecond pulse is firstly stretched by an eight-pass offner stretcher with a chirp rate 15 ps/nm, and then energy-amplified by a two-stage optical parametric chirped pulse amplification (OPCPA). The first stage as preamplification with three pieces of BBO crystals provides the majority of the energy gain. At the second stage, a YCOB crystal with the aperture of ~50 mm is used instead of the KDP crystal as the gain medium to ensure the shortest pulse. After the completion, the laser will deliver about 8 J with pulse duration of about 10 femtoseconds, which should be beneficial to the attosecond pulse generation and other ultrafast experiments.