title: Investigation of the suitability of silicate bonding for facet termination in active fiber devices.
abstract: We demonstrate that silicate bonding an optical flat to the output facet of an active fiber device can increase the reliability of high-peak power systems and subsantially reduce the effective feedback at the termination of a double-clad fiber. We determine the bonding parameters and conditions that maximize the optical damage threshold of the bond and minimize the Fresnel reflection from the bond. At 1-mum wavelength, damage thresholds greater than 70 J/cm(2) are demonstrated for 25-ns pulses. We also measured Fresnel reflections less than -63 dB off the bond. Finally, we determined that the strength of the bond is sufficient for most operating environments.
authors: Supriyo
authors: S
authors: Sinha
authors: Karel E
authors: KE
authors: Urbanek
authors: Alan
authors: A
authors: Krzywicki
authors: Robert L
authors: RL
authors: Byer