Narrowband widely tunable CW mid-infrared generator based on difference frequency generation in periodically poled KTP and KTA crystals
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We demonstrate narrowband CW mid-infrared generators based on difference frequency generation in periodically poled KTP and KTA crystals. The crystals are used to nonlineary mix the beams from high-power narrowband fiber laser systems working at 1060- and 1550-nm spectral bands. We explore various techniques to control the linewidth of fiber lasers. The tunability achieved in a source based on nonlinear mixing in a KTA crystal exceeds the range of 3100–3620 nm.
KeywordsMid-infrared tunable laser source Fiber laser Fiber optics amplifier Difference-frequency generation
The work was supported by the Ministry of Education, Youth and Sports under Grant No. LD14112 in the frame of COST Action MP1204.
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