Results 51 to 60 of about 10,941 (165)

Experimental Demonstration of Coherent Combining With Tip/Tilt Control Based on Adaptive Space-to-Fiber Laser Beam Coupling

IEEE Photonics Journal, 2017
A novel approach of tip/tilt control through optimizing laser beam coupling efficiencies from space to polarization-maintaining-fibers with stochastic parallel gradient descent (SPGD) algorithm for coherent beam combining (CBC) applications is ...
Feng Li, Chao Geng, Guan Huang, Yan Yang, Xinyang Li, Qi Qiu   +5 more
doaj   +1 more source

Experimental Demonstration and Characterization of a Non-Mode Selective (De)Multiplexer Using Multi-Plane Light Converter (MPLC)

IEEE Photonics Journal
We experimentally demonstrate the use of a multi-plane light converter (MPLC) as a non-mode selective (de)multiplexer for converting Hermite-Gaussian (HG) modes into a Hadamard matrix of fundamental Gaussian spots and vice versa.
Shree R. Thapa, Seth Smith-Dryden, Zheyuan Zhu, Shuo S. Pang, Guifang Li   +4 more
doaj   +1 more source

Analysis of Optical Bottle Generation by Coherent Beam Combining

Optics Express
The study evaluates the feasibility of generating a closed optical trap (“optical bottle”) using coherent beam combining. A semi-analytical model, based on paraxial wave optics and truncated Gaussian beam approximation, was employed. Proposed configurations include: (1) simple bifocal tilt, (2) bifocal tilt + polarization switching, (3) bifocal tilt +
openaire   +2 more sources

Design and Experimental Research of Vortex Beam Mixer

Photonics
Based on the birefringence phenomenon of vortex beam in uniaxial crystals for optical path design, yttrium vanadate crystals and waveplates are used to realize coherent mixing of vortex beam.
Chenghu Ke, Xinwen Zhang, Xizheng Ke, Peng Li   +3 more
doaj   +1 more source

Enhanced Supermode Stability in Weakly Anti-Guided Dual-Cavity Photonic Crystal VCSEL Arrays

IEEE Photonics Journal
We report on 940 nm dual-cavity photonic crystal vertical-cavity surface-emitting laser (VCSEL) arrays fabricated at a commercial foundry. These arrays leverage an anti-guided design enabled by reduced electrical resistance between optically coupled ...
Dan W. Pflug, Chloe Armstrong, Erin Raftery, Nusrat Jahan, William North, Luke Graham, Jim Tatum, Kent D. Choquette   +7 more
doaj   +1 more source

High-Power Laser Coherent Beam Combination Through Self-Imaging in Plasma Waveguides

Applied Sciences
A novel approach for laser coherent beam combination (CBC) utilizing the self-imaging effect in plasma waveguides is presented in this study, which enables the transmission of ultrashort laser pulses at intensities above the bulk damage threshold of ...
Yixuan Huang, Haitao Zhang, Zhuoyi Yang, Yanwei Wang, Yihang Huang, Xiaozheng Liu, Junyu Chen   +6 more
doaj   +1 more source

Laser-induced coherent spin change due to spin-orbit coupling

npj Spintronics
Direct light-spin interactions, induced by spin-orbit coupling (SOC), enable ultrafast spin manipulation through coherent spin excitation, which is universal in magnetic materials due to the ubiquity of SOC.
In Cheol Yu, Jung Hyun Oh, Je-Ho Shim, Kab-Jin Kim, Byong-Guk Park, Dong-Hyun Kim, Kyoung-Whan Kim, Hyun-Woo Lee, Kyung-Jin Lee, Fabian Rotermund   +9 more
doaj   +1 more source

Basic Properties of High-Dynamic Beam Shaping with Coherent Combining of High-Power Laser Beams for Materials Processing

Journal of Manufacturing and Materials Processing
Lasers with average powers of several kilowatts have become an important tool for industrial applications. Temporal and spatial beam shaping was demonstrated to improve existing and enable novel applications.
Rudolf Weber, Jonas Wagner, Alexander Peter, Christian Hagenlocher, Ami Spira, Benayahu Urbach, Eyal Shekel, Yaniv Vidne   +7 more
doaj   +1 more source

Directly Emitting a High-Power Phase-Locked Laser Array by an Internal Phase Sensing System

IEEE Photonics Journal
In this article, we experimentally presented a compact, packaged high-power coherent fiber laser array based on an internal phase sensing technique. In the experiment, a laser array with three beamlets was utilized for experimental presentation.
Jinhu Long, Shuyue He, Qi Chang, Zhiqiang Gao, Yanxing Ma, Rongtao Su, Pengfei Ma, Pu Zhou   +7 more
doaj   +1 more source

Two-dimensional photonic crystal Bragg lasers with triangular lattice for monolithic coherent beam combining. [PDF]

Sci Rep, 2017
Zhu Y, Zhao Y, Zhu L.
europepmc   +1 more source