Results 221 to 230 of about 11,035 (264)

Reinforcement Learning for Coherent Beam Combining

CLEO Pacific Rim Conference, 2018
Reinforcement learning has been shown to be capable of solving complex tasks. Here we show potential advantages and disadvantages in the context of phase control for coherent beam combining.
Henrik Tünnermann, Akira Shirakawa
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A non-uniformly coherent combining beam

Laser Physics, 2014
An approach that can be used to generate more complex and interesting optical fields is proposed by controlling the phase, position, size and amplitude of each coherent array. To illustrate the advantages of the approach, the power coupling efficiency of the optical systems with Cassegrain-telescope receivers is studied.
Chunmei Chai, Chunnan Zhang, Lipeng Luo, Yongte Jiang, Haiqiang Tong, Xiuxiang Chu   +5 more
openaire   +1 more source

Coherent Beam Combining of Fiber Lasers

CLEO Pacific Rim Conference, 2018
Coherent beam combination has been established as a performance scaling concept for laser systems to overcome limitations of a single emitter. Today, the most powerful femtosecond fiber lasers employ his technique.
Arno Klenke, Michael Müller, Henning Stark, Andreas Tünnermann, Jens Limpert   +4 more
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Coherent beam combining of fiber amplifiers

2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666), 2005
In this paper, we demonstrate the coherent superposition of fiber amplifiers in a Michelson-type setup with active amplifying arms. The diffraction limited beam quality from the amplifiers is not reduced by imposing the beams and combining efficiencies exceeds 95%.
S. Hofer, H. Zellmer, J.-P. Raske, A. Tunnermann   +3 more
openaire   +1 more source

Quantum Limits of Coherent Beam Combining

CLEO Pacific Rim Conference, 2018
Coherent beam combining refers to the process of generating a bright output beam by merging independent input beams with locked relative phases. We report the first quantum mechanical noise limit calculations for coherent beam combining and compare our results to quantum-limited amplification.
Leuchs, G., Müller, C., Sedlmeir, F., Chatterjee, S., Haarlammert, N., Jauregui, C., Schreiber, T., Limpert, J., Tünnermann, A., Marquardt, C.   +9 more
openaire   +2 more sources

Dynamic beam shaping with coherent beam combining

PhotonicsViews
AbstractCoherent beam combining (CBC) is a method of enhancing laser power. It has recently transitioned to industrial applications, unveiling new possibilities in laser technology. CBC merges multiple laser channels from a single source, controlling their phase to create constructive or destructive interference.
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Coherent beam combining of diode arrays

2013 High Power Diode Lasers and Systems Conference (HPD), 2013
Summary form only given. There is continuing interest in increasing the power and improving the beam quality of laser sources for a variety of applications. An approach, particularly relevant to semiconductor and fiber lasers, is to beam combine large arrays of lasers.
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Fiber Lasers and Their Coherent Beam Combination

Optics and Photonics News, 2008
With high efficiency and exceptional beam quality, fiber lasers hold great promise. The 1-µm wavelength makes it possible for them to replace both diode- and lamp-pumped Nd:YAG lasers in the micromachining, automotive and biomedical markets.
Q. Lou, J. Zhou, B. He, H. Zhou
openaire   +1 more source

Coherent beam combining of fiber lasers

2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017
There is continuing interest in increasing the power and improving the beam quality of laser sources for a variety of applications including materials processing, pumping, power transmission, and illumination. One approach is to continue to develop improved lasers with higher power and good beam quality.
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Coherent beam combination in optical waveguides

SPIE Proceedings, 1990
A general theory for coherent coupling between two co-propagating or counterpropagating guided waves is formulated within the slowly varying envelope approximation. A pair of coupled nonlinear equations is obtained for the evolution of envelope functions. A numerical result is given for coherent coupling of two co-propagating pulses in a single mode
Tsae-Pyng J. Shen, Daniel N. Rogovin, Allan D. Boardman   +2 more
openaire   +1 more source