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Neodymium-doped yttrium lithium fluoride : ウィキペディア英語版 | Neodymium-doped yttrium lithium fluoride Neodymium-doped yttrium lithium fluoride (Nd:YLF) is a lasing medium for arclamp-pumped and diode-pumped solid-state lasers. The YLF crystal (LiYF4) is naturally birefringent, and commonly used laser transitions occur at 1047 nm and 1053 nm〔(M. Pollak, W. F. Wing, Robert J. Grasso, E. P. Chicklis, and Hans P. Jenssen. "CW laser operation of Nd:YLF." IEEE J. Quant. Electron., 18, 159-163 (1982) )〕. It is used in Q-switched systems in part due to its relatively long fluorescence lifetime. As with Nd:YAG lasers, harmonic generation is frequently employed with Q-switched Nd:YLF to produce shorter wavelengths. A common application of frequency-doubled Nd:YLF pulses is to pump ultrafast Ti:Sapphire chirped-pulse amplifiers. Neodymium-doped YLF can provide higher pulse energies than Nd:YAG for repetition rates of a few kHz or less. Compared to Nd:YAG, the Nd:YLF crystal is very brittle and fractures easily. It is also slightly water-soluble — a YLF laser rod may very slowly dissolve in cooling water which surrounds it.() == See also ==
*Neodymium doped yttrium orthovanadate (Nd:YVO4) *Neodymium doped yttrium aluminum garnet (Nd:YAG) laser
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