Widely tunable in the mid-IR BaGa 4 Se 7 optical parametric oscillator pumped at 1064 nm.
2016
A BaGa4Se7 nanosecond optical parametric oscillator (OPO) shows extremely wide idler tunability in the mid-IR (2.7–17 μm) under 1.064 μm pumping. The ∼10 ns pulses at ∼7.2 μm have an energy of 3.7 mJ at 10 Hz. The pump-to-idler conversion efficiency for this wavelength reaches 5.9% with a slope of 6.5% corresponding to a quantum conversion efficiency or pump depletion of 40%.
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