Ultrafast high-harmonic spectroscopy of solids

C Heide, Y Kobayashi, SRU Haque, S Ghimire - Nature Physics, 2024‏ - nature.com
High-harmonic spectroscopy, an ultrafast all-optical technique initially conceptualized in
atomic and molecular systems, has now emerged as a powerful platform for studying the …

[HTML][HTML] A short guide to recent developments in laser-based gas phase spectroscopy, applications, and tools

V Shumakova, OH Heckl - APL Photonics, 2024‏ - pubs.aip.org
This article provides an overview of laser-based absorption spectroscopy applications and
discusses the parameter space and requirements of laser systems for each of these …

High-harmonic generation from artificially stacked 2D crystals

C Heide, Y Kobayashi, AC Johnson, TF Heinz… - …, 2023‏ - degruyter.com
We report a coherent layer-by-layer build-up of high-order harmonic generation (HHG) in
artificially stacked transition metal dichalcogenides (TMDC) crystals in their various stacking …

Mid-infrared frequency domain optical parametric amplifier

G Dalla-Barba, G Jargot, P Lassonde, S Tóth… - Optics …, 2023‏ - opg.optica.org
We report on an optical architecture delivering sub-120 femtosecond laser pulses of 20 µJ
tunable from 5.5 µm to 13 µm in the mid-infrared range (mid-IR). The system is based on a …

Cryogenically cooled Fe: ZnSe-based chirped pulse amplifier at 4.07 µm

ZA Marra, Y Wu, F Zhou, Z Chang - Optics Express, 2023‏ - opg.optica.org
A femtosecond chirped pulse amplifier based on cryogenically cooled Fe: ZnSe was
demonstrated at 333 Hz—33 times higher than previous results achieved at near-room …

Nonlinear refraction and absorption properties of optical materials for high-peak-power long-wave-infrared lasers

MN Polyanskiy, IV Pogorelsky, M Babzien… - Optical Materials …, 2024‏ - opg.optica.org
Optical materials transparent in the CO 2 laser wavelength range have been evaluated
regarding their suitability for components in ultrashort-pulse (≤ a few ps), high-peak-power …

All-fiber Er3+-doped Mamyshev oscillator with signal-to-noise ratio over 82 dB

J Wu, N Li, D Liu, Y He, Y **e, M Huang… - IEEE Photonics …, 2024‏ - ieeexplore.ieee.org
We experimentally demonstrated an all-fiber Er3+-doped Mamyshev oscillator (MO) with
high signal-to-noise ratio (SNR) and low mode-locking threshold at 1550 nm wavelength. By …

Sub-picosecond tunable mid-infrared light source for driving high-efficiency optical rectification

J Liu, Y Ding, X Gu, P Yuan, D Zhang, J Wang, G **e… - Optics …, 2023‏ - opg.optica.org
Optical rectification (OR) is a popular way to generate coherent terahertz radiation. Here, we
develop a sub-picosecond mid-infrared (mid-IR) light source with a tailored wavelength and …

Monolithic tapered Yb-doped fiber chirped pulse amplifier delivering 126 μJ and 207 MW femtosecond laser with near diffraction-limited beam quality

T Wang, B Ren, C Li, K Guo, J Leng, P Zhou - Frontiers of Optoelectronics, 2023‏ - Springer
In this work, a high-energy and high peak power chirped pulse amplification system with
near diffraction-limited beam quality based on tapered confined-doped fiber (TCF) is …

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 …