Chinese Academy of Sciences

Shifeng Jin

Gang Wang

Wenjun Wang

Xiaolong Chen

Chunjun Liu

Tonghua Peng

Shunchong Wang

Provided is a nonlinear optical device manufactured with 4H silicon carbide crystal. The nonlinear optical crystal may be configured to alter at least a light beam () at a frequency to generate at least a light beam () at a further frequency different from the frequency. The nonlinear optical crystal comprises a 4H silicon carbide crystal (). The nonlinear optical device is more compatible with practical applications in terms of outputting mid-infrared laser at high power and high quality and thus are more applicable in practice, because the 4H silicon carbide crystal has a relatively high laser induced damage threshold, a relatively broad transmissive band (0.38-5.9 &#x3bc;m and 6.6-7.08 &#x3bc;m), a relatively great 2-order nonlinear optical coefficient (d=6.7 pm/V), a relatively great birefringence, a high thermal conductivity (490 WmK), and a high chemical stability.

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Beijing, China

Shifeng Jin