title: Intracavity difference-frequency mixing of optical parametric oscillator signal and idler pulses in BaGa4Se7.
abstract: An overall quantum conversion efficiency of 7.8% is achieved by intracavity mixing the signal and idler of a 1.064 μm pumped Rb:PPKTP optical parametric oscillator in BaGa4Se7. In this way, a pulse energy of ∼0.71  mJ is generated at ∼7  μm for a repetition rate of 100 Hz. Tuning of the mid-IR radiation is demonstrated by heating of the Rb:PPKTP crystal.
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Boyko
authors.forename: Nadezhda Y
authors.initials: NY
authors.lastname: Kostyukova
authors.forename: Valeriy
authors.initials: V
authors.lastname: Badikov
authors.forename: Dmitrii
authors.initials: D
authors.lastname: Badikov
authors.forename: Vladimir
authors.initials: V
authors.lastname: Panyutin
authors.forename: Galina
authors.initials: G
authors.lastname: Shevyrdyaeva
authors.forename: Valdas
authors.initials: V
authors.lastname: Pasiskevicius
authors.forename: Andrius
authors.initials: A
authors.lastname: Zukauskas
authors.forename: Georgi M
authors.initials: GM
authors.lastname: Marchev
authors.forename: Dmitry B
authors.initials: DB
authors.lastname: Kolker
authors.forename: Valentin
authors.initials: V
authors.lastname: Petrov