title: High-power beam transport through a hollow-core photonic bandgap fiber.
abstract: We investigate the use of a seven-cell hollow-core photonic bandgap fiber for transport of CW laser radiation from a single-mode, narrow-linewidth, high-power fiber laser amplifier. Over 90% of the amplifier output was coupled successfully and transmitted through the fiber in a near-Gaussian mode, with negligible backreflection into the source. 100 W of power was successfully transmitted continuously without damage and 160 W of power was transmitted briefly before the onset of thermal lensing in the coupling optics.
authors.forename: D C
authors.initials: DC
authors.lastname: Jones
authors.forename: C R
authors.initials: CR
authors.lastname: Bennett
authors.forename: M A
authors.initials: MA
authors.lastname: Smith
authors.forename: A M
authors.initials: AM
authors.lastname: Scott