Ten-watt level picosecond parametric mid-IR source broadly tunable in wavelength

0496700 - FZÚ 2019 RIV US eng C - Conference Paper (international conference)
Vyvlečka, Michal - Novák, Ondřej - Roškot, Lukáš - Smrž, Martin - Mužík, Jiří - Endo, Akira - Mocek, Tomáš
Ten-watt level picosecond parametric mid-IR source broadly tunable in wavelength.
Nonlinear Frequency Generation and Conversion: Materials and Devices XVII. Bellingham: SPIE, 2018 - (Vodopyanov, K.; Schepler, K.), s. 1-7, č. článku 105161F. Proceedings of SPIE, 10516. ISBN 9781510615175. ISSN 0277-786X.
[SPIE LASE. San Francisco (US), 27.01.2018-01.02.2018]
R&D Projects: GA MŠMT LO1602; GA ČR GA16-12960S; GA MŠMT LM2015086
EU Projects: European Commission(XE) 739573 - HiLASE CoE
Institutional support: RVO:68378271
Keywords : infrared lasers * mid-IR * nonlinear optical devices * optical parametric generation * optical parametric amplification * picosecond lasers * thin-disk las
OECD category: Optics (including laser optics and quantum optics)

Mid-IR wavelength range (between 2 and 8 μm) offers perspective applications, such as minimally-invasive neurosurgery, gas sensing, or plastic and polymer processing. Maturity of high average power near-IR lasers is beneficial for powerful mid-IR generation by optical parametric conversion. We utilize in-house developed Yb:YAG thin-disk laser of 100 W average power at 77 kHz repetition rate, wavelength of 1030 nm, and about 2 ps pulse width for pumping of a ten-watt level picosecond mid-IR source. Seed beam is obtained by optical parametric generation in a double-pass 10 mm long PPLN crystal pumped by a part of the fundamental near-IR beam. Tunability of the signal wavelength between 1.46 μm and 1.95 μm was achieved with power of several tens of miliwatts. Main part of the fundamental beam pumps an optical parametric amplification stage, which includes a walk-off compensating pair of 10 mm long KTP crystals.
Permanent Link: http://hdl.handle.net/11104/0289356