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.
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The work was supported by the Ministry of Education, Youth and Sports under Grant No. LD14112 in the frame of COST Action MP1204.
This article is part of the Topical Collection on TERA-MIR: Materials, Generation, Detection and Applications.
Guest Edited by Mauro F. Pereira, Anna Wojcik-Jedlinska, Renata Butkute, Trevor Benson, Marian Marciniak and Filip Todorov.
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Baravets, Y., Honzatko, P., Todorov, F. et al. Narrowband widely tunable CW mid-infrared generator based on difference frequency generation in periodically poled KTP and KTA crystals. Opt Quant Electron 48, 286 (2016). https://doi.org/10.1007/s11082-016-0556-4
- Mid-infrared tunable laser source
- Fiber laser
- Fiber optics amplifier
- Difference-frequency generation