We have developed a fiberless 1-TW all-Nd:glass chirped-pulse-amplification laser system that uses high-contrast 0.8–1.4-ps pulses produced directly from a Nd:glass feedback-controlled oscillator. Employing grating-only expansion and compression, the system produces clean (~107 contrast ratio) 1-J, 1–1.4-ps recompressed pulses without added pulse cleaning. Clean microjoule-energy pulses from the oscillator require less subsequent amplification than cw oscillator schemes, thereby minimizing gain–bandwidth narrowing and offering improved contrast with amplified stimulated emission background.
© 1993 Optical Society of America
Original Manuscript: September 8, 1992
Published: March 1, 1993
R. S. Marjoribanks, F. W. Budnik, L. Zhao, G. Kulcsár, M. Stanier, and J. Mihaychuk, "High-contrast terawatt chirped-pulse-amplification laser that uses a 1-ps Nd:glass oscillator," Opt. Lett. 18, 361-363 (1993)