10-W mid-IR optical parametric oscillators based on ZnGeP{sub 2} elements pumped by a fibre-laser-pumped Ho: YAG Laser. Experimental and numerical study

Journal Article · Tue Aug 01 04:00:00 EDT 2017 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QEL16366· OSTI ID:22725969

Antipov, O. L.; Eranov, I. D.; Kositsyn, R. I.

The possibility of increasing the power and efficiency of 3.5 – 5.0 μm optical parametric oscillators (OPOs) based on one or two ZnGeP{sub 2} crystals pumped by a repetitively pulsed Ho: YAG laser ( λ = 2097 nm), which, in turn, is pumped by a thulium fibre laser ( λ = 1908 nm), is studied. The OPO based on a tandem of ZnGeP{sub 2} elements is demonstrated to generate high-quality beams with an average power up to 10 W in pulses with durations of 15 – 25 ns at a repetition rate of ∼17 kHz. The total conversion efficiency of the fibre laser power to the mid-IR radiation reached 25%. A theoretical OPO model explaining a cluster spectrum and higher output power in the case of the ZnGeP{sub 2} tandem than in the case of a single element is developed.

• OSTI ID: 22725969
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 7 Vol. 47; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAMS
CRYSTALS
EFFICIENCY
ENERGY CONVERSION
EXPERIMENTAL DATA
GERMANIUM PHOSPHIDES
INTERMEDIATE INFRARED RADIATION
KHZ RANGE
NEODYMIUM LASERS
NUMERICAL ANALYSIS
PARAMETRIC OSCILLATORS
PULSES
PUMPING
SPECTRA
THULIUM
ZINC PHOSPHIDES