Abstract
Ultrashort-pulse generation and amplification in the ultraviolet (UV) region has been receiving a great deal of interest for applications. All known UV short-pulse master oscillator and power amplifier (MOPA) systems consist of mode-locked oscillator stages, and excimer power amplifier stages. 1 The above systems are complicated and bulky. However, solid-state tunable UV-laser materials such as Ce3+ ion activated LuLiF4 (LLF) 2 LiCaAlF6 (LiCAF), and LiSrAlF6 (LiSAF) 3,4 have recently been developed. With their broad gain-width, they are attractive for ultrashort pulse applications. To prove that, we have demonstrated UV picosecond-pulse amplification using Ce:LLF. 5 Furthermore, by employing a newly proposed self-injection-seeding scheme, we have directly generated UV picosecond pulse-trains from a Ce:LLF laser 6 and a Ce:LiCAF laser.7 This presentation reports UV picosecond pulse generation and amplification in a compact, all-solid-state MOPA system.
© 1996 Optical Society of America
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