Portal de Periódicos da CAPES

Generation of high-contrast and high-intensity laser pulses using an OPCPA preamplifier in a double CPA, Ti:sapphire laser system

2008; Elsevier BV; Volume: 282; Issue: 4 Linguagem: Inglês

10.1016/j.optcom.2008.10.067

1873-0310

Hiromitsu Kiriyama, Michiaki Mori, Yoshiki Nakai, Takuya Shimomura, Manabu Tanoue, Atushi Akutsu, Hajime Okada, Tomohiro Motomura, Shuji Kondo, Shuhei Kanazawa, A. Sagisaka, Jinglong Ma, I. Daito, H. Kotaki, Hiroyuki Daido, S. V. Bulanov, Toyoaki Kimura, T. Tajima,

Laser-induced spectroscopy and plasma

We demonstrate a high-contrast, high-intensity double chirped-pulse amplification (CPA) Ti:sapphire laser system using an optical parametric chirped-pulse (OPCPA) pre- amplifier. By injecting cleaned microjoule seed pulses into the OPCPA, a temporal contrast greater than 1010 within picosecond times before the main femtosecond pulse is demonstrated with an output pulse energy of 1.7 J and a pulse duration of 30 fs, corresponding to a peak power of 60 TW at a 10 Hz repetition rate. This system uses a cryogenically-cooled Ti:sapphire final amplifier and generates focused peak intensities in excess of 1020 W/cm2.