Results 31 to 40 of about 2,040,617 (301)

Efficient Power Scaling Of Laser Radiation By Spectral Beam Combining

open access: yes, 2008
The possibility of achieving multikilowatt laser radiation by spectrally combining beams using volume Bragg gratings (VBGs) is shown. The VBGs recorded in a photothermorefractive glass exhibit long-term stability of all its parameters in high-power laser
Venus, George   +4 more
core   +2 more sources

Random Scattering and Alternating Projection Optimization for Active Phase Control of a Laser Beam Array

open access: yesIEEE Photonics Journal, 2019
A fraction of a laser beam array, whose unknown piston phase relationships must be set to prescribed values, is launched into a scattering media with random transmission.
Jeremy Saucourt   +4 more
doaj   +1 more source

Spectral beam combining of diode lasers with high efficiency [PDF]

open access: yes, 2012
Based on spectral beam combining we obtain 16 W of output power, combining two 1063 nm DBR-tapered diode lasers.
Paul Michael Petersen   +15 more
core   +1 more source

Statistical Model of Digital Coherent Combining Efficiency in Multi-aperture Receivers

open access: yesGuangtongxin yanjiu, 2022
In order to mitigate the performance fading of Free-Space Optical (FSO) communication system caused by atmospheric turbulence, a multi-aperture receiving scheme based on digital coherent beam combining is used.
Jing-song XIANG, Xin-hao Lü
doaj   +3 more sources

Simple beam combination for stellar interferometry

open access: yesOptics Letters, 2007
3 ...
Ribak, E. N.   +3 more
openaire   +3 more sources

Ultimate efficiency of spectral beam combining by volume Bragg gratings

open access: yes, 2013
International audienceSpectral beam combining (SBC) by volume Bragg gratings (VBGs) recorded in photo-thermo-refractive (PTR) glass is a powerful tool for laser applications that require higher radiance than a single laser unit can achieve.
Glebov, L.B.   +7 more
core   +2 more sources

Incoherent Space Beam Combining of Fiber-Transmitted Semiconductor Lasers for Oil Well Laser Perforation

open access: yesIEEE Access, 2019
This paper demonstrates a 19 X 1 incoherent space beam combiner tailored for oil well laser perforation, which is used for an incoherent laser beam combining of 19 fiber-transmitted semiconductor lasers around a wavelength of 972 nm.
Yang Bai   +5 more
doaj   +1 more source

Beam-combining scheme of high-power broad-area semiconductor lasers with Lyot-filtered reinjection: modeling, simulations, and experiments [PDF]

open access: yes, 2019
A brightness- and power-scalable polarization beam-combining scheme for high-power, broad-area semiconduc-tor laser diodes is investigated numerically and experimentally.
Montiel Ponsoda, Joan   +8 more
core   +1 more source

Beam combining of quantum cascade lasers for remote sensing

open access: yes, 2022
S.439-444This letter highlights the application of quantum cascade lasers for stand-off detection and remote sensing. In particular, we review the topic of power scaling via beam combining architectures and conclude with remarks on generating axial ...
Wagner, J., Tholl, H.D.
core   +1 more source

On the analysis of switched-beam antennas for the W-CDMA downlink [PDF]

open access: yes, 2004
Smart antennas are widely recognized as an enabling technology for addressing the demand of future wireless network capacity when employed in place of traditional fixed-coverage sector antennas.
Beach, Mark   +5 more
core   +1 more source

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