Abstract
the continuous;wave mid;infrared radiation (mid;ir) was experimentally obtained by difference frequency quasi;phase;matching in a mgo;doped periodically poled linbo3crystal (mgo:ppln), which the narrow linewidth light sources with 1083 nm and 1550 nm were used as pump light and signal light, respectively. moreover, the multiple mid;ir wavelengths were realized by adjusting the signal wavelength and using the temperature controlling on a mgo:ppln. the wavelength tuning region is around 3547.6 nm to 3629.1 nm. a maximum mid;infrared radiation power of 3.2 mw at 3597.0 nm is generated when the optical power of signal and pump lights are amplified to 3.5 w and 2.8 w respectively. the power jitter of mid;infrared output is less than ±1.6% after along time test recording. this study can be used as a reference for the design and development of narrow line width multi;wavelength continuous;wave infrared light source. © 2016, science press. all right reserved.
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