title: Assessment of diffusion-bonded KTP crystals for efficient, low pulse energy conversion from 1 to 2 microm.
abstract: Diffusion bonded (DB) walk-off compensated KTP crystals offer an alternative nonlinear medium for efficient 1 to 2 microm conversion within optical parametric oscillators (OPOs) at low pulse energies. Spatial variations in optical absorption and transmission values measured at 2 mum are reported for two DB-KTP crystals. Finally, a comparison is made between the conversion efficiency obtained from a degenerate 1 microm pumped OPO using a single 20 mm KTP crystal and an equivalent length DB-KTP crystal consisting of two bonded 10 mm crystals.
authors.affiliation: QinetiQ, Great Malvern, Worchester, UK. bjperrett@qinetiq.com
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Perrett
authors.forename: Paul D
authors.initials: PD
authors.lastname: Mason
authors.forename: David A
authors.initials: DA
authors.lastname: Orchard