Abstract

A long-wavelength injection method is proposed that will yield a broad amplified spectrum in a femtosecond terawatt Ti:sapphire laser. By injecting a seed pulse on the red side of the gain peak and amplifying it to a saturated fluence level, we could significantly compensate for the spectral narrowing that is due to the gain-narrowing effect by use of the amplifying characteristics of a positively chirped pulse in a gain-saturated regime, and 20-fs, 3-TW pulses could be demonstrated from a Ti:sapphire laser with two multipass amplifiers.

© 1999 Optical Society of America

Silver-mirror-based multipass preamplifier for a broadband terawatt Ti:sapphire laser

Y. W. Lee, Y. H. Cha, J. H. Yi, S. M. Nam, K. Lee, Y. J. Rhee, Y. U. Jeong, and H. K. Cha
Appl. Opt. 47(7) 1015-1019 (2008)

Generation of 16-fs, 10-TW pulses at a 10-Hz repetition rate with efficient Ti:sapphire amplifiers

K. Yamakawa, M. Aoyama, S. Matsuoka, H. Takuma, C. P. J. Barty, and D. Fittinghoff
Opt. Lett. 23(7) 525-527 (1998)

Generation of 10-W average-power, 40-TW peak-power, 24-fs pulses from a Ti:sapphire amplifier system

H. Wang, S. Backus, Z. Chang, R. Wagner, K. Kim, X. Wang, D. Umstadter, T. Lei, M. Murnane, and H. Kapteyn
J. Opt. Soc. Am. B 16(10) 1790-1794 (1999)

Direct amplification of terawatt sub-10-fs pulses in a CPA system of Ti:sapphire laser

A. Amani Eilanlou, Yasuo Nabekawa, Kenichi L. Ishikawa, Hiroyuki Takahashi, and Katsumi Midorikawa
Opt. Express 16(17) 13431-13438 (2008)

Simple method for the temporal characterization of amplified spontaneous emission in femtosecond terawatt Ti:sapphire lasers

Yong-Ho Cha, Yong-Woo Lee, Sung Mo Nam, Jae Min Han, Yong Joo Rhee, Byung Duk Yoo, Byoung Chul Lee, and Young Uk Jeong
Appl. Opt. 46(28) 6854-6858 (2007)