Results 231 to 240 of about 180,863 (279)

Physics Based Phase Control in Coherent Beam Combining Systems

Journal of Lightwave Technology
In the realm of high-power lasers, coherent beam combining has become a scalable and dependable technology. However, achieving phase synchronization in a coherent beam-combining (CBC) system is a significant challenge.
Akash Dominic Thomas, Khushboo Soni, K. Nithyanadan   +2 more
semanticscholar   +1 more source

Active coherent beam combining of diode lasers

Optics Letters, 2011
We have demonstrated active coherent beam combination (CBC) of up to 218 semiconductor amplifiers with 38.5 W cw output using up to eleven one-dimensional 21-element individually addressable diode amplifier arrays operating at 960 nm. The amplifier array elements are slab-coupled-optical-waveguide semiconductor amplifiers (SCOWAs) set up in a master ...
Shawn M, Redmond, Kevin J, Creedon, Jan E, Kansky, Steven J, Augst, Leo J, Missaggia, Michael K, Connors, Robin K, Huang, Bien, Chann, Tso Yee, Fan, George W, Turner, Antonio, Sanchez-Rubio   +10 more
openaire   +2 more sources

Generation of arbitrary cylindrical vector beams by an all-fiber coherent beam combining system

Applied Physics Letters
Cylindrical vector beams (CVBs) with unique spatial polarization states have attracted great interest in recent years. However, the generation of high-power CVBs faces a significant challenge due to the limited output power of a single laser.
Kaikai Jin, Hong-Xiang Chang, Jin-Hu Long, R. Su, Yu-Qiu Zhang, Jia-Yi Zhang, Yan-Xin Ma, Pu Zhou   +7 more
semanticscholar   +1 more source

Coherent beam combination in barium titanate

Journal of the Optical Society of America B, 1988
Coherent beam combination through multiple-beam self-pumped phase conjugation in BaTiO3 has been demonstrated to conjugate piston error to at least λ/10. The coupling is shown to occur by a copumping mechanism.
P. Fairchild, K. Davis, M. Valley
openaire   +1 more source

Numerical and experimental study on coherent beam combining using an improved stochastic parallel gradient descent algorithm

Laser physics, 2020
The adaptive gradient (AdaGrad) method is an optimization algorithm widely used in the field of artificial intelligence. An adaptive gradient stochastic parallel gradient descent (SPGD) algorithm (AdaSPGD algorithm), combining an AdaGrad algorithm with ...
Ji-Kun Song, Yuan-Yang Li, Dong-Bo Che, Tingfeng Wang   +3 more
semanticscholar   +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

Binary coherent beam combination with mirror pairs

Applied Optics, 2002
A configuration of N coated mirrors or mirror pairs is described that has the potential to coherently combine 2N single-frequency phase-locked diffraction-limited polarized optical beams to form a single diffraction-limited beam. The application to beam combination of fiber amplifiers is discussed.
openaire   +2 more sources

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
openaire   +1 more source

Coherent beam combining of more than 100 fiber lasers

, 2020
In this paper, we will demonstrate the preliminary experimental result of coherent beam combining of 107 fiber lasers, which is the largest beam numbers for CBC of fiber lasers to the best of our knowledge.
Hong-Xiang Chang, Qi Chang, Tianyue Hou, R. Su, Peng-Fei Ma, Jian Wu, Yanxing Ma, P. Zhou   +7 more
semanticscholar   +1 more source

Coherent Beam Combining of Fiber Amplifiers*

Lasers Congress 2016 (ASSL, LSC, LAC), 2016
Beam combining of laser arrays has become increasing viable over the past decade as the community has developed a better understanding of the requirements imposed by beam combining. Coherent beam combining (CBC) enables scaling the brightness by large amounts, in principle by as much as the number of elements.
openaire   +1 more source