Flexible hollow fibers for delivery of the second, third, and fourth harmonic pulses of <i>Q</i>-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.
© 2002 Optical Society of America
Yuji Matsuura, Goro Takada, Takashi Yamamoto, Yi-Wei Shi, and Mitsunobu Miyagi, "Hollow Fibers for Delivery of Harmonic Pulses of Q-Switched Nd:YAG Lasers," Appl. Opt. 41, 442-445 (2002)