SUPPRESSION OF THE AMPLIFIED SPONTANEOUS EMISSION IN CHIRPED-PULSE-AMPLIFICATION LASERS BY CLEAN HIGH-ENERGY SEED-PULSE INJECTION

Authors
ITATANI J FAURE J NANTEL M MOUROU G WATANABE S
Citation
J. Itatani et al., SUPPRESSION OF THE AMPLIFIED SPONTANEOUS EMISSION IN CHIRPED-PULSE-AMPLIFICATION LASERS BY CLEAN HIGH-ENERGY SEED-PULSE INJECTION, Optics communications, 148(1-3), 1998, pp. 70-74
Citations number
26
Categorie Soggetti
Optics
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
148
Issue
1-3
Year of publication
1998
Pages
70 - 74
Database
ISI
SICI code
0030-4018(1998)148:1-3<70:SOTASE>2.0.ZU;2-F
Abstract
We have suppressed the amplified spontaneous emission in a femtosecond terawatt Ti:sapphire chirped-pulse-amplification (CPA) laser by injec ting clean microjoule seed pulses into thr regenerative amplifier. The intensity contrast ratio, which is one of the major difficulties in C PA lasers, was improved from similar to 10(5) in the original nanojoul e injection case to similar to 10(7) in the nanosecond scale. (C) 1998 Elsevier Science B.V.