We have developed a lipolysis laser system that can be commercialized using wavelengths of 1980 nm and 2300 nm with excellent absorption in fat and water. An 808 nm laser diode and Nd:YVO4 were used to generate a 1064 nm wavelength light source, which is used as pumping light for nonlinear crystals. The oven was designed and fabricated to precisely control the temperature of the nonlinear crystal and applied to the mid-infrared lipolysis laser system. The characteristics of the developed laser were validated by measuring the change of the wavelength depending on the temperature and the output according to the wavelength. We analyzed fat reduction efficacy appears for two selected wavelengths.

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