Results 281 to 290 of about 107,506 (333)

Vortex Coherent Beam Combining

Laser Congress 2021 (ASSL,LAC), 2021
We propose Coherent Beam Combining with vortex wavefront to create an effective optical trap. More than 50 dB barrier height (wall to center irradiance ratio) for 127-hexagonal lattice was shown in numerical model.
Jan K. Jabczynski, Przemyslaw Gontar, Lukasz Gorajek, Waldemar Zendzian, Krzysztof Kopczyński   +4 more
openaire   +1 more source

Coherent Polarization Beam Combination

IEEE Journal of Quantum Electronics, 2010
A new, scalable coherent beam combination architecture has been developed and experimentally verified. Coherent Polarization Beam Combination (CPBC) relies on the combination of multiple beams through a coherent superposition of orthogonal polarization states. By actively controlling the phases and polarizations of individual beams, the creation of new
Radoslaw Uberna, Andrew Bratcher, Bruce G. Tiemann   +2 more
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Coherent beam combining of cylindrical vector beams for power scaling

Optics Letters, 2023
Coherent beam combining (CBC) of cylindrical vector beams (CVBs) based on an active phase controller is proposed and demonstrated. Experimentally, two pieces of spatially variant wave plates (S-wave plate) were employed as vector mode convertors for two individual 1064-nm fiber amplifier channels. When the system was in a closed loop, a combined output
Shixin, Liu, Hang, Liu, Xuepeng, Qi, Wanjing, Peng, Yujun, Feng, Li, Chen, Zhendong, Li, Yinhong, Sun, Yi, Ma, Zhigang, Zhao, Qingsong, Gao, Zhaojun, Liu, Chun, Tang   +12 more
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Combining module based on coherent polarization beam combining

Applied Optics, 2017
A multiaperture receiver with a phased array is an effective approach to overcome the effect of the random optical disturbance in coherent free-space laser communications, in which one of the key technologies is how to efficiently combine the multiple laser beams received by the phased array antenna.
Yan, Yang, Chao, Geng, Feng, Li, Xinyang, Li   +3 more
openaire   +2 more sources

Coherent Combining with Imperfect Beams

Advances in Optical Materials, 2011
Coherent combining efficiency losses from spatially and temporally mismatched input fields are quantified in terms of normalized variances of the field parameters. We derive expressions for Gaussian beams relevant for coherent fiber arrays.
Gregory D. Goodno, C. C. Shih, Joshua E. Rothenberg   +2 more
openaire   +1 more source

Analysis of multiwavelength coherent beam combining effect

Applied Optics, 2012
The combination effect of multiwavelength active coherent beam combination (CBC) is investigated theoretically. The dependence of the combination effect on the optical path control precision, spectral width, wavelength number, and channel number is revealed.
Han, Kai, Xu, Xiaojun, Liu, Zejin
openaire   +2 more sources

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
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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
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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.
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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