Results 31 to 40 of about 86,848 (262)

Research on mid-infrared quantum cascade lasers spectral beam combining

Frontiers in Physics
Quantum cascade lasers (QCLs) in the mid-infrared (MIR) hold significant potential for widespread applications in both military and civilian contexts.
Xinmin Fan, Xinmin Fan, Jianxin Zhang, Jianxin Zhang, Yan Wang, Yan Wang, Sensen Li, Chunyan Wang, Chunyan Wang, Yuantai Wu, Yuantai Wu, Lujun Zhang, Lujun Zhang, Xiaodong Huang, Xiaodong Huang, Shun Li, Shun Li, Yu Zhang   +17 more
doaj   +1 more source

High-Power External Spatial Beam Combining of 7-Channel Quantum Cascade Lasers Emitting at ~8.5 μm

Photonics
Based on the demand for high-power output, a spatial beam combining 7-channel quantum cascade lasers (QCLs) is demonstrated in this paper. A “2 + 3 + 2” stepped structure is designed to convert the seven beam spots into a circular arrangement.
Haibo Dong, Xuyan Zhou, Man Hu, Yuan Ma, Aiyi Qi, Weiqiao Zhang, Wanhua Zheng   +6 more
doaj   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Frequency Comb-Based Seed Laser Architecture With Improved Brillouin Performance for Spectral Beam Combining of Narrow-Linewidth Lasers

IEEE Photonics Journal
This study presents a novel approach to spectral beam combining for achieving high output powers with a compact, single module seed laser source based on frequency combs.
Shilpi Arora, Soubhik Pal, C. G. Lakshmi, Sarthak Dash, V.R. Supradeepa   +4 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Research of Laser Beam Combining in Ring Fiber-Optic Delay Line

Приборы и методы измерений, 2023
At present time widespread use of autonomous laser systems supposes reducing of supply energy, consumed by laser sources that are included in their composition and at the same time increasing of their output energy characteristics.
M. R. Zaripov, V. A. Alekseev, A. I. Kirillov, A. V. Oficerova   +3 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

High-Brightness 1940 nm Gallium Antimonide Diode Lasers with External-Cavity Spectral and Polarization Beam Combining

Photonics
In this paper, we present a beam-combining technique to boost GaSb-based 1940 nm diode laser output power through spectral beam combining (SBC), spatial beam combining, and polarization beam combining (PBC).
Rong Zhao, Yufei Zhao, Bo Meng, Cunzhu Tong   +3 more
doaj   +1 more source

Tapered Multicore Fiber for High-Power Laser Amplifiers

IEEE Photonics Journal, 2022
The problem of coherent amplification of the out-of-phase mode in tapered multicore fibers with cores arranged in a ring and in a square lattice is studied theoretically.
A. V. Andrianov, S. A. Skobelev, A. A. Balakin, E. A. Anashkina, A. G. Litvak   +4 more
doaj   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source