Title

High Efficiency and High Peak Power Picosecond Mid-Infrared Optical Parametric Amplifier Based on a New Crystal BaGa4Se7

Document Type

Article

Publication Date

10-2013

Publication Title

Optics Letters

DOI

10.1364/OL.38.003903

Abstract

A high efficiency and high peak power picosecond (ps) mid-infrared optical parametric amplifier with a new nonlinear crystal BaGa4Se7 pumped by a 30 ps 1064 nm Nd:YAG laser is demonstrated for the first time. The maximum photon conversion efficiency of 56% from 1064 nm to 3.9 μm idler has been achieved at the pump energy of ∼1.8  mJ. A maximum idler output of 830 μJ at 3.9 μm with peak power of ∼27  MW was obtained at pump energy of ∼9.1  mJ. Moreover, a 3–5 μm idler tuning range was demonstrated, with output energies of ∼300  μJ at 5 μm and up to 1 mJ at 3 μm at ∼8.2  mJ pump energy.

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