A two-stage up-convertor made of AgGaSe2 and β-BBO crystals
PACS: 42.65; 42.70
Springer Online Journal Archives 1860-2000
Abstract. A two-stage infrared up-convertor made of AgGaSe2 and β-BBO crystals has been built up, that can up-convert the mid-infrared radiation of 11–16 μm into the 0.8-μm range where the sensitive photomultiplier can be used. This up-convertor is pumped with a near-infrared radiation of 1.7–1.8 μm wavelength range generated by a β-BBO optical parametric oscillator. In this experiment, we also measured the o-ray refractive index of AgGaSe2 in the 11–16 μm mid-infrared range and extended the fitting range of the Sellmeier equation to the 16-μm wavelength range.
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