Intense infrared lasers for strong-field science

Z Chang, L Fang, V Fedorov, C Geiger… - Advances in Optics …, 2022 - opg.optica.org
The advent of chirped-pulse amplification in the 1980s and femtosecond Ti: sapphire lasers
in the 1990s enabled transformative advances in intense laser–matter interaction physics …

Highly efficient stimulated Raman scattering of sub-picosecond laser pulses in BaWO4 for 10.6 µm difference frequency generation

IO Kinyaevskiy, VI Kovalev, PA Danilov, NA Smirnov… - Optics Letters, 2020 - opg.optica.org
Transient stimulated Raman scattering (SRS) of 0.3 ps 515 nm laser pulses in \rmBaWO_4
BaWO_4 crystal was experimentally demonstrated with efficiency up to ∼20\%∼ 20% for …

Energetic picosecond 10.2-μm pulses generated in a BGGSe crystal for nonlinear seeding of terawatt-class CO2 amplifiers

YP Yang, JY Lee, J Wang - Optics Express, 2024 - opg.optica.org
We demonstrate what we believe to be a new approach to energetic picosecond 10.2-µm
pulse generation based on nonlinear mixing of subnanosecond single-frequency 1338-nm …

Frequency conversion of a chirped Ti: sapphire laser pulse to 11.4 μm wavelength with SrMoO4 Raman shifter and LiGaS2 DFG crystal

IO Kinyaevskiy, AV Koribut, LV Seleznev… - Optics & Laser …, 2024 - Elsevier
The simple mid-IR laser source based on femtosecond Ti: Sapphire laser and successive
frequency conversion of its stretched up to 50 ps pulses in SrMoO 4 Raman-active crystal …

Frequency down-conversion of a chirped Ti: sapphire laser pulse with BaWO4 Raman shifter and second-order nonlinear crystal

IO Kinyaevskiy, AV Koribut, YV Grudtsyn… - Laser Physics …, 2022 - iopscience.iop.org
We experimentally carried out frequency conversion of a chirped and stretched up to 200 ps
near-IR 90 fs Ti: Sapphire laser pulse into the mid-IR through difference frequency …

50-µJ level, 20-picosecond, narrowband difference-frequency generation at 4.6, 5.4, 7.5, 9.2, and 10.8 µm in LiGaS2 and LiGaSe2 at Nd:YAG laser pumping and …

SN Smetanin, M Jelínek, V Kubeček… - Optical Materials …, 2020 - opg.optica.org
A comparative study of picosecond mid-IR difference frequency generation in a wide
wavelength range of 4.6-10.8 µm in a simple down-converter based on the 8-mm long, high …

Efficient SRS of chirped Ti: sapphire laser pulses in BaWO4 crystals

IO Kinyaevskiy, VI Kovalev, AV Koribut… - Quantum …, 2022 - iopscience.iop.org
We report an experimental study of SRS of chirped 40-ps Ti: sapphire laser pulses with a
transform-limited duration of 0.35 ps and centre wavelength of 925 nm in BaWO 4 crystals …

Raman wavelength conversion in ionic liquids

R Kupfer, F Wang, JF Wishart, M Babzien… - Physical Review …, 2023 - APS
We explore the use of room-temperature ionic liquids (ILs) as Raman wavelength
converters. ILs provide an engineerable framework to design suitable liquids for wavelength …

Laser-induced damage threshold of ZnGeP2 crystal for (sub)picosecond 1-µm laser pulse

IO Kinyaevskiy, PA Danilov, SI Kudryashov… - Applied Optics, 2022 - opg.optica.org
The laser-induced damage threshold (LIDT) was measured for<? TeX 2pc 0pt?> a Z n G e P
2 crystal exposed to 0.3–9.5 ps 1030-nm laser pulses. Single-pulse LIDT fluence was∼ 0.22 …

Two-color emission of BaWO4 crystals pumped by 472 nm 0.11 ps laser pulses for frequency conversion into the longwave IR domain

IO Kinyaevskiy, AV Koribut, YAV Grudtsyn… - Laser Physics …, 2020 - iopscience.iop.org
The frequency conversion of Ti: Sapphire laser second harmonic pulses into two-color
emission using a tandem of BaWO 4 Raman crystals was experimentally demonstrated with …