Mid-IR optical parametric oscillation and second harmonic generation of repetitively pulsed output of a fibre-laser pumped Tm3+ : YAP laser in a fan-out periodically poled MgO : LiNbO3 crystal. (1st March 2022)

• Record Type: Journal Article
• Authors: Antipov, O L; Kolker, D B; Dobrynin, A A; Getmanovskiy, Yu. A.; Sharkov, V V; Chuvakova, M A; Akhmathanov, A R; Shur, V Ya; Shestakova, I A; Larin, S V
• Is Part Of: Quantum electronics. Volume 52:Number 3(2022)
• Page Start: 254
• Page End: 261
• Publication Date: 2022-03-01
• Subjects: solid-state lasers -- two-micrometre wavelength region -- fibre lasers -- nonlinear optical frequency conversion -- periodically poled MgO : LiNbO3 crystals -- optical parametric oscillator -- mid-IR range -- frequency doubling.; Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QEL18006
• Languages: English
• ISSNs: 1063-7818

Abstract

Abstract: The nonlinear optical frequency conversions of repetitively pulsed output of a 1941-nm Tm 3+ : YAP laser pumped by a cw 1670-nm fibre laser are studied experimentally. Both mid-IR optical parametric oscillation (OPO) and second harmonic generation (SHG) are obtained in the same periodically poled MgO : LiNbO3 crystal with a fan-out domain design by tuning the grating period and temperature. The energy conversion efficiency of the degenerate OPO at 3820–3970 nm exceeds 43% at a 0.5 kHz repetition rate, while the energy conversion efficiency of SHG at 970.5 nm reaches 34%.