Generation of ultrafast mid-infrared laser by DFG between two actively synchronized picosecond lasers in a MgO:PPLN crystal

• DOI: 10.1007/s00340-012-5045-2
• Publication Date: 2012-07-21T23:01:30Z
• Authors: H. Xuan; Y. Zou; S. Wang; H. Han; Z. Wang; Z. Wei
• Keywords: Picosecond; Crystal (programming language); Ti:sapphire laser

We report the difference-frequency generation (DFG) of ultrafast mid-infrared laser radiation around 3 μm between two picosecond laser pulses with the center wavelengths of 800 nm and 1064 nm in a MgO:PPLN crystal at room temperature. The two laser pulses were generated from the actively synchronized picoseconds Ti:sapphire and Nd:YVO4 oscillators. We measured the DFG wavelengths tunable from 3.19–3.29 μm and the output power is potential to be several mW. This experiment proves a possible roadmap for ultrafast mid- and far-infrared laser radiation generation and even for the THz radiation.