Results 11 to 20 of about 345,721 (314)

Slow-Light Effect and Mode Selection of Double Fiber Ring With a Fiber Bragg Grating

open access: yesIEEE Photonics Journal, 2018
A novel slow-light reflector composed of a double-ring resonator with a uniform fiber Bragg grating (FBG) incorporated is proposed in this paper, which can be used as a mirror of narrow-linewidth fiber laser, based on its enlarged group delay, and as a ...
Xiaoqiong Qin   +9 more
doaj   +1 more source

Graphdiyne-Based All-Solid-State Passively Q-Switched Tm:YAP Laser at 2 μm

open access: yesNanomaterials, 2023
All-solid-state Tm lasers have a wider wavelength range and higher output power compared to other types of lasers. In this work, we demonstrate an all-solid-state, high repetition, Tm:YAP laser Q-switched by a graphdiyne (GDY) saturable absorber.
Qing Wu   +5 more
doaj   +1 more source

All-Solid-State Four-Color Laser [PDF]

open access: yes, 1999
This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The goal of this project is to develop a solid state laser that produces visible output wavelengths, including the commercially compelling blue wavelength.
Gosnell, T. R., Xie, P.
openaire   +2 more sources

Measurement of laser absorptivity for operating parameters characteristic of laser drilling regime [PDF]

open access: yes, 2008
Publisher version : http://iopscience.iop.org/0022-3727/41/15/155502/Laser drilling in the percussion regime is commonly used in the aircraft industry to drill sub-millimetre holes in metallic targets.
SCHNEIDER, Matthieu   +3 more
core   +1 more source

Brillouin Frequency Shift of Fiber Distributed Sensors Extracted from Noisy Signals by Quadratic Fitting

open access: yesSensors, 2018
It is a basic task in Brillouin distributed fiber sensors to extract the peak frequency of the scattering spectrum, since the peak frequency shift gives information on the fiber temperature and strain changes.
Hanrong Zheng   +7 more
doaj   +1 more source

All-Solid-State UV Lasers.

open access: yesThe Review of Laser Engineering, 1999
Recent progress in all-solid-state UV lasers is reviewed. In all-solid-state UV lasers, frequency conversion technique is generally used. CLBO (CsLiB6O10) crystals are mostly used in fourth harmonic generation of solid-state lasers, since the crystal had been discovered.
KOJIMA, Tetsuo   +3 more
openaire   +2 more sources

Influence of various process conditions on surface finishes induced by the direct metal deposition laser technique on a Ti–6Al–4V alloy [PDF]

open access: yes, 2012
The direct metal deposition (DMD) with laser is a free-form metal deposition process for manufacturing dense pieces, which allows generating a prototype or small series of near net-shape structures. One of the most critical issues is that produced pieces
GORNY, Cyril   +7 more
core   +1 more source

Joint Time and Frequency Dissemination Network Over Delay-Stabilized Fiber Optic Links

open access: yesIEEE Photonics Journal, 2015
A precise fiber-based time and frequency dissemination scheme for multiple users with a tree-like branching topology is proposed. Through this scheme, ultrastable signals can be easily accessed online without affecting other sites.
Wei Chen   +6 more
doaj   +1 more source

Design of Wide-Band Frequency Shift Technology by Using Compact Brillouin Fiber Laser for Brillouin Optical Time Domain Reflectometry Sensing System

open access: yesIEEE Photonics Journal, 2012
A novel wide-band optical frequency shift technology by using a compact single-frequency Brillouin fiber laser (BFL) configured with high-doped Er3+ fiber and high nonlinear fiber (HNLF) is proposed and investigated experimentally.
Yunqi Hao   +7 more
doaj   +1 more source

Thermal stability of laser treated die material for semi-solid metal forming [PDF]

open access: yes, 2009
This paper presents laser surface modification work performed to improve the lifetime of die materials. Die material AISI H13, with typical hardness in the range of 42 to 48 HRC, offers high wear and corrosion resistance.
Brabazon, Dermot   +4 more
core   +1 more source

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