Second-Harmonic Generation in HgGa2S4

Abstract

This paper reports what is believed to be the first attainment of tunable SHG in HgGa2S41,2. The HgGa2S4 crystal used in this experiment was 8 × 8 × 8 mm3 and fabricated at θ = 67.5° (θ = 22.5°) and ϕ = 0° with polished four side surfaces. The transmission range is 0.55 – 12.4 μm.