title: Hollow fibers for delivery of harmonic pulses of Q-switched Nd:YAG lasers.
abstract: Flexible hollow fibers for delivery of the second, third, and fourth harmonic pulses of Q-switched Nd:YAG lasers are introduced. For the doubled (532-nm) wavelength, we fabricated a hollow fiber with an internal metal and polymer film by using a silver-mirror plating and a liquid-phase-coating method. For tripled (355-nm) and quadrupled (266-nm) Nd:YAG in the ultraviolet region, we fabricated aluminum hollow fibers with or without an internal polymer layer by using the metal-organic chemical-vapor deposition method. Both types of fiber show high stability for the transmission of high-peak power laser pulses with low transmission losses.
authors.affiliation: Department of Electrical Communications, Tohoku University, Aramaki, Sendai, Japan. yuji@ecei.tohoku.ac.jp
authors.forename: Yuji
authors.initials: Y
authors.lastname: Matsuura
authors.forename: Goro
authors.initials: G
authors.lastname: Takada
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Yi-Wei
authors.initials: YW
authors.lastname: Shi
authors.forename: Mitsunobu
authors.initials: M
authors.lastname: Miyagi