title: Extended femtosecond laser wavelength range to 330 nm in a high power LBO based optical parametric oscillator.
abstract: We experimentally demonstrate a compact tunable, high average power femtosecond laser source in the ultraviolet (UV) regime. The laser source is based on intra-cavity frequency doubling of a temperature-tuned lithium tribotate (LBO) optical parametric oscillator (OPO), synchronously pumped at 520 nm by a frequency-doubled, Yb-fiber femtosecond laser amplifier system. By adjusting crystal temperature, the OPO can provide tunable visible to near-infrared (NIR) signal pulse, which have a wide spectral tuning range from 660 to 884 nm. Using a β-barium borate (BBO) crystal for intra-cavity frequency doubling, tunable femtosecond UV pulse are generated across 330~442 nm with up to 364 mW at 402 nm.
authors.forename: Jintao
authors.initials: J
authors.lastname: Fan
authors.forename: Chenglin
authors.initials: C
authors.lastname: Gu
authors.forename: Chingyue
authors.initials: C
authors.lastname: Wang
authors.forename: Minglie
authors.initials: M
authors.lastname: Hu