Journal ArticleDOI
Coherent Polarization Beam Combination
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In this paper, a scalable coherent beam combination (CPBC) architecture was developed and experimentally verified, which relies on the combination of multiple beams through a coherent superposition of orthogonal polarization states.Abstract:
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 polarization states at polarization beam combiners enables the coherent combination of any number of beams with arbitrary power ratios. A four-beam CPBC was experimentally demonstrated at low laser power level, with 96% combining efficiency, nearly diffraction-limited beam quality, and variable polarization of the output beam. The CPBC method will enable power scaling of master oscillator power amplifier laser systems.read more
Citations
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Journal ArticleDOI
Cooling of a levitated nanoparticle to the motional quantum ground state.
Uroš Delić,Uroš Delić,Manuel Reisenbauer,Kahan Dare,Kahan Dare,David Grass,Vladan Vuletic,Nikolai Kiesel,Markus Aspelmeyer,Markus Aspelmeyer +9 more
TL;DR: A quantum interface that combines optical trapping of solids with cavity-mediated light-matter interaction and laser-cooling an optically trapped nanoparticle into its quantum ground state of motion from room temperature is demonstrated.
Journal ArticleDOI
Coherent combining of a 4 kW, eight-element fiber amplifier array.
C.X. Yu,Steven J. Augst,Shawn M. Redmond,K C Goldizen,Daniel V. Murphy,Antonio Sanchez,T. Y. Fan +6 more
TL;DR: Commercial 0.5 kW Yb-doped fiber amplifiers have been characterized and found to be suitable for coherent beam combining and the beam-combining performance is independent of output power.
Journal ArticleDOI
530 W, 1.3 mJ, four-channel coherently combined femtosecond fiber chirped-pulse amplification system
Arno Klenke,Sven Breitkopf,Marco Kienel,Thomas Gottschall,Tino Eidam,Steffen Hädrich,Jan Rothhardt,Jens Limpert,Andreas Tünnermann +8 more
TL;DR: A femtosecond fiber laser system comprising four coherently combined large-pitch fibers as the main amplifier and an excellent beam quality and efficiency have been obtained.
Journal ArticleDOI
Perturbative analysis of coherent combining efficiency with mismatched lasers
TL;DR: In this article, the authors examined coherent combining efficiency for large arrays of non-ideal lasers combined using filled aperture elements with non-uniform splitting ratios and derived tolerancing metrics for co-alignment and uniformity of arrays of singlemode fiber lasers.
Journal ArticleDOI
High-power coherent beam polarization combination of fiber lasers: progress and prospect [Invited]
TL;DR: In this article, a single-channel coherently combinable linearly polarized narrow-linewidth fiber amplifier and high-power coherent polarization beam combining (CPBC) system is presented.
References
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Journal ArticleDOI
Laser beam combining for high-power, high-radiance sources
TL;DR: In this paper, the authors provide an overview of beam combining and highlight some of the tradeoffs among beam-combining techniques, including wavelength (spectral) and coherent (phased array) techniques.
Book
Polarized light in optics and spectroscopy
TL;DR: In this paper, the Jones calculus, Mueller calculus, and Poincare sphere are revisited, and a detailed discussion of the properties of light properties is given, along with a detailed description of their properties.
Journal ArticleDOI
Beam combining of ytterbium fiber amplifiers (Invited)
TL;DR: In this article, the authors demonstrate good beam quality from the combination of three fiber amplifiers, and discuss system scaling and design trades between laser linewidth, beam width, grating dispersion, and beam quality.
Journal ArticleDOI
First experimental demonstration of self-synchronous phase locking of an optical array
Thomas M. Shay,Vincent Benham,J. T. Baker,Benjamin G. Ward,Anthony D. Sanchez,Mark A. Culpepper,D. Pilkington,Justin B. Spring,Douglas J. Nelson,Chunte A. Lu +9 more
TL;DR: The first demonstration of the only electronic phase locking technique that doesn't require a reference beam is reported, and the measured phase error is lambda/20.
Journal ArticleDOI
Wavelength beam combining of ytterbium fiber lasers.
TL;DR: Wavelength beam combining of five ytterbium fiber lasers is demonstrated in a master-oscillator power-amplifier configuration at combined powers up to 6 W, which is equal to that of an individual fiber.