High Power Laser Science and Engineering, Vol. 8, Issue 3, 03000e29 (2020)
Ultra-broadband near-infrared NOPAs based on the nonlinear crystals BiBO and YCOB
Mario Galletti1,2,3,*, Hugo Pires1, Victor Hariton1, Joana Alves1, Pedro Oliveira2, Marco Galimberti2, and Gonçalo Figueira1
- 1GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Tecnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- 2Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, UK
- 3INFN-LNF, Via Enrico Fermi 54, 00044 Frascati, Italy
We evaluate and demonstrate ultra-broadband near-infrared noncollinear optical parametric amplification in two nonlinear crystals, bismuth borate (BiBO) and yttrium calcium oxyborate (YCOB), which are not commonly used for this application. The spectral bandwidth is of the microjoule level; the amplified signal is ≥ 200 nm, capable of supporting sub-10 fs pulses. These results, supported by numerical simulations, show that these crystals have a great potential as nonlinear media in both low-energy, few-cycle systems and high peak power amplifiers for terawatt to petawatt systems based on noncollinear optical parametric chirped pulse amplification (NOPCPA) or a hybrid.
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