title: Spectroscopic properties and laser performance of resonantly-pumped cryo-cooled Er³⁺:GdVO₄.
abstract: We report a highly efficient cryo-cooled eye-safe laser operation of a resonantly-pumped (in-band) Er³⁺:GdVO₄ single crystal. The maximum continuous wave (CW) power of 10.3 W with 84% slope efficiency was achieved at 1598.7 with pumping at 1538.6 nm by a spectrally-narrowed Er-fiber laser. Under the 1529 nm resonant pumping by a commercially available diode bar stack operating in a quasi-CW (QCW) mode, the laser delivered 37 W of output power with 68% slope efficiency. This is believed to be the first reported cryo-cooled Er³⁺:GdVO₄ laser, resonantly-pumped into the ⁴I₁₅/₂ →⁴I₁₃/₂ transition.
authors.affiliation: US Army Research Laboratory, 2800 Powder Mill Rd., Adelphi, MD 20783, USA. nikolay.e.tergabrielyan.civ@mail.mil
authors.forename: N
authors.initials: N
authors.lastname: Ter-Gabrielyan
authors.forename: V
authors.initials: V
authors.lastname: Fromzel
authors.forename: W
authors.initials: W
authors.lastname: Ryba-Romanowski
authors.forename: T
authors.initials: T
authors.lastname: Lukasiewicz
authors.forename: M
authors.initials: M
authors.lastname: Dubinskii
mesh_terms: D003080:Cold Temperature; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D013057:Spectrum Analysis / Q000295:instrumentation*