Results 41 to 50 of about 42,863 (289)

MIL-68(Al) and MIL-68(Fe) as broadband optical modulators for Q-switching fiber lasers operating at 2 and 2.9 μm

open access: yesFrontiers in Physics, 2022
We investigated 2 and 2.9 μm mid-infrared fiber lasers passively Q-switched by MIL-68(Al) and MIL-68(Fe), which were fabricated via the hydrothermal method. The modulation depth of MIL-68(Al) was found to be 9.12% at 1.99 μm. And the modulation depths of
Le Zheng   +7 more
doaj   +1 more source

Mid-IR continuous-wave fiber-laser-pumped optical parametric oscillators [PDF]

open access: yes, 2004
We review recent developments in continuous-wave mid-infrared optical parametric oscillators pumped by fiber lasers. Such devices are potentially valuable spectroscopic sources providing high output powers and rapid, wide-range tuning in the mid-infrared
Adhimoolam, B.   +7 more
core   +3 more sources

Analysis of heat generation and thermal lensing in erbium 3-µm lasers [PDF]

open access: yes, 2003
The influence of energy-transfer upconversion (ETU) between neighboring ions in the upper and lower laser levels of erbium 3-µm continuous-wave lasers on heat generation and thermal lensing is investigated.
Pollnau, Markus
core   +2 more sources

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

open access: yesFEBS 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

Mid-infrared lasers for energy frontier plasma accelerators

open access: yesPhysical Review Accelerators and Beams, 2016
Plasma wake field accelerators driven with solid-state near-IR lasers have been considered as an alternative to conventional rf accelerators for next-generation TeV-class lepton colliders.
I. V. Pogorelsky   +2 more
doaj   +1 more source

Novel Broadband Amplifier for Mid-Infrared Semiconductor laser and applications in spectroscopy [PDF]

open access: yes, 2010
An amplifier design for broadband Mid-IR buried-hetero (BH) structure epitaxial laser is presented, and external cavity design based on this amplifier is described.
Deev, Andrei   +4 more
core   +1 more source

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

Numerical Modeling and Optimization of Mid-Infrared Fluoride Glass Raman Fiber Lasers Pumped by $\hbox{Tm}^{3+}$-Doped Fiber Laser

open access: yesIEEE Photonics Journal, 2013
Numerical modeling of multiorder cascaded fluoride glass Raman fiber laser (RFL) employing fiber Bragg gratings (FBGs) is presented. Calculations were compared with the recently reported results, and good agreement was achieved.
Hongyu Luo   +4 more
doaj   +1 more source

High Power Mid-Infrared Quantum Cascade Lasers Grown on GaAs

open access: yesPhotonics, 2022
The motivation behind this work is to show that InP-based intersubband lasers with high power can be realized on substrates with significant lattice mismatch.
Steven Slivken, Manijeh Razeghi
doaj   +1 more source

Watt-level dysprosium fiber laser at 3.15 {\mu}m with 73% slope efficiency

open access: yes, 2018
Rare-earth-doped fiber lasers are emerging as promising high-power mid-infrared sources for the 2.6-3.0 {\mu}m and 3.3-3.8 {\mu}m regions based on erbium and holmium ions.
Bharathan, G.   +5 more
core   +1 more source

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