Mid-infrared few-cycle pulse generation and amplification

K Tian, L He, X Yang, H Liang - Photonics, 2021 - mdpi.com
In the past decade, mid-infrared (MIR) few-cycle lasers have attracted remarkable research
efforts for their applications in strong-field physics, MIR spectroscopy, and bio-medical …

Generation of 8–20 μm mid-infrared ultrashort femtosecond laser pulses via difference frequency generation

X Su, R Zhu, B Wang, Y Bai, T Ding, T Sun, X Lü… - Photonics, 2022 - mdpi.com
Mid-infrared (MIR) ultrashort laser pulses have a wide range of applications in the fields of
environmental monitoring, laser medicine, food quality control, strong-field physics …

Long seed, short pump: converting Yb-doped laser radiation to multi-µJ few-cycle pulses tunable through 2.5–15 µm

R Budriūnas, K Jurkus, M Vengris, A Varanavičius - Optics express, 2022 - opg.optica.org
We present a setup for generating broadband (up to 1050 cm^− 1) and broadly tunable (2.5-
15 µm) mid-infrared pulses using an Yb-doped femtosecond laser as the pump source. Our …

Dual-wavelength spectrum-shaped mid-infrared pulses and steering high-harmonic generation in solids

L He, W Wang, K Tian, M Xiang, Z Wan, B Hu, Y Li… - Ultrafast …, 2023 - spj.science.org
Mid-infrared (MIR) ultra-short pulses with multiple spectral-band coverage and good
freedom in spectral and temporal shaping are desired by broad applications such as …

Wavelength scaling of electron collision time in plasma for strong field laser-matter interactions in solids

GC Nagar, D Dempsey, B Shim - Communications Physics, 2021 - nature.com
Although the dielectric constant of plasma depends on electron collision time as well as
wavelength and plasma density, experimental studies on the electron collision time and its …

Femtosecond infrared supercontinuum generation in 6H-SiC crystal

A Šuminienė, V Jukna, R Šuminas, G Tamošauskas… - OSA …, 2021 - opg.optica.org
We report on supercontinuum generation in silicon carbide (6H-SiC), pumped by tunable
femtosecond pulses in the wavelength range of 1.3-2.4 μm, which cover the regions of …

Long-wavelength infrared upconversion time-stretch spectroscopy

L He, H Wu, W Wang, B Hu, X Yang, H Liang - Applied Physics Letters, 2024 - pubs.aip.org
High-speed spectroscopy in the molecular fingerprint spectral region (≈ 6–12 μm) is
essential for the detection of ultrafast molecular dynamic processes, rapid combustion …

Nonlinear compression of naturally down-chirped superradiance pulses from a free-electron laser oscillator by thick germanium plates

H Zen, R Hajima, H Ohgaki - Optics Express, 2023 - opg.optica.org
Naturally down-chirped superradiance pulses, with mirco-pulse energy, peak wavelength,
and micropulse duration of 40 µJ, 8.7 μm, and 5.1 optical cycles, respectively, emitted from a …

Light bullets in transparent dielectrics

VP Kandidov, ED Zaloznaya, AE Dormidonov… - Quantum …, 2022 - iopscience.iop.org
This paper presents a retrospective analysis of the development of notions in nonlinear
optics: from beam self-focusing and pulse filamentation to light bullets–wave packets …

Avalanche ionization during UV filamentation in fused silica: suppression of blueshifted spectra extent

Y Tian, C Gong, D Kong, X Hu - JOSA B, 2022 - opg.optica.org
In general, ionization-induced free-electron plasma is considered to increase spectral
blueshift during femtosecond laser filamentation. Here we theoretically show that the …