title: Intracavity-pumped, cascaded AgGaSe₂ optical parametric oscillator tunable from 5.8 to 18 µm.
abstract: A AgGaSe2 nonlinear crystal placed in a coupled cavity is intracavity pumped by the ~1.85-µm signal pulses of a 1.064-µm pumped Rb:PPKTP doubly-resonant optical parametric oscillator (OPO) operating at a repetition rate of 100 Hz. Using two samples cut for type-I and II phase-matching, the overall idler tunability of the singly-resonant AgGeSe2 OPO covers an unprecedented spectral range from 5.8 to ~18 µm in the mid-IR.
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Boyko
authors.forename: Georgi M
authors.initials: GM
authors.lastname: Marchev
authors.forename: Valentin
authors.initials: V
authors.lastname: Petrov
authors.forename: Valdas
authors.initials: V
authors.lastname: Pasiskevicius
authors.forename: Dmitry B
authors.initials: DB
authors.lastname: Kolker
authors.forename: Andrius
authors.initials: A
authors.lastname: Zukauskas
authors.forename: Nadezhda Y
authors.initials: NY
authors.lastname: Kostyukova