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New Nonlinear Crystal for Infrared OPOs

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Breck Hitz

A collaboration of scientists in France, Russia and Germany has demonstrated an optical parametric oscillator (OPO) based on a new nonlinear crystal, lithium selenoindate (LiInSe2, abbreviated LISe). The investigators believe that their results are a significant step in the development of tunable optical sources in the important 2- to 12-µm spectral range, because LISe can be pumped by readily available 1-µm lasers without two-photon absorption effects, and it exhibits roughly five times larger thermal conductivity than AgGaS2. Such infrared sources are of interest to spectroscopists because...Read full article

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