Abstract
Yb:LiYF4 (Yb:YLF) crystal is one of the promised laser materials in the diode-pumped ultrahigh- peak-power lasers due to its high energy storage and wide spectral emission range. In our previous work, the laser gain and the spectral gain width of a diode-pumped Yb:YLF were dramatically improved at low temperature.1 Then a diode- pumped, Kerr-lens mode-locked oscillator has been developed at liquid nitrogen temperature.2 In the present work, a diode-pumped regenerative amplifier with a cooled Yb:YLF crystal has been constructed as a booster amplifier in our all solid-state ultrahigh-peak-power laser system, and an initial laser gain and a cavity loss have been estimated in its Q-switching operation to numerically simulate a chirped-pulse regenerative amplification.
© 2002 Optical Society of America
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