Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Coherent beam combining of multi-wavelength lasers based on stochastic parallel gradient descent algorithm
View through CrossRef
Owing to the restriction of the stimulated Brillouin scattering (SBS) and other nonlinear effects, the output power of the single frequency amplifier is ar a level of about hundred watts. Multi-wavelength and non-single frequency seed laser will mitigate the SBS and improve the output power of the fiber laser amplifier. The coherent beam combining of the non-single frequency and/or multi-wavelength laser will greatly increase the total output power of the coherent beam combining as compared with the coherent beam combining of a single frequency laser. Based on the stochastic parallel gradient descent (SPGD) algorithm, coherent combining of four channel four-wavelength lasers is realized. In the close loop state, the mean power of the main-lobe is four times higher than that of the open-loop, approaching 75% of its ideal value. The coherent combining of the multi-wavelength and non-single frequency laser is demonstrated and an approach to the high power coherent beam combining is provided.
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Title: Coherent beam combining of multi-wavelength lasers based on stochastic parallel gradient descent algorithm
Description:
Owing to the restriction of the stimulated Brillouin scattering (SBS) and other nonlinear effects, the output power of the single frequency amplifier is ar a level of about hundred watts.
Multi-wavelength and non-single frequency seed laser will mitigate the SBS and improve the output power of the fiber laser amplifier.
The coherent beam combining of the non-single frequency and/or multi-wavelength laser will greatly increase the total output power of the coherent beam combining as compared with the coherent beam combining of a single frequency laser.
Based on the stochastic parallel gradient descent (SPGD) algorithm, coherent combining of four channel four-wavelength lasers is realized.
In the close loop state, the mean power of the main-lobe is four times higher than that of the open-loop, approaching 75% of its ideal value.
The coherent combining of the multi-wavelength and non-single frequency laser is demonstrated and an approach to the high power coherent beam combining is provided.
Related Results
Propagation of a Partially Coherent Bessel—Gaussian Beam in a Uniform Medium and Turbulent Atmosphere
Propagation of a Partially Coherent Bessel—Gaussian Beam in a Uniform Medium and Turbulent Atmosphere
The study of coherent vortices remains an urgent field of singular optics of vortex beams. In this paper, coherent properties of partially coherent vortex Bessel—Gaussian optical b...
Development of Solution-Processed Perovskite Semiconductors Lasers
Development of Solution-Processed Perovskite Semiconductors Lasers
Lead halide perovskite is a new photovoltaic material with excellent material characteristics, such as high optical absorption coefficient, long carrier transmission length, long c...
Chaos-control and parallel queue synchronization of laser local area network
Chaos-control and parallel queue synchronization of laser local area network
In this work, we study the chaos-control and parallel queue synchronization of a laser local area network (LAN). We present and study specifically a “single-queue-double-parameter”...
Particle-in-cell simulations of velocity scattering of an anisotropic electron beam by electrostatic and electromagnetic instabilities
Particle-in-cell simulations of velocity scattering of an anisotropic electron beam by electrostatic and electromagnetic instabilities
The velocity space scattering of an anisotropic electron beam (T⊥b/T∥b>1) flowing along a background magnetic field B0 through a cold plasma is investigated using both linea...
Propagation of a Partially Coherent Bessel–Gaussian Beam in a Uniform Medium and Turbulent Atmosphere
Propagation of a Partially Coherent Bessel–Gaussian Beam in a Uniform Medium and Turbulent Atmosphere
In this paper, the coherent properties of partially coherent Bessel–Gaussian optical beams propagating through a uniform medium (free space) or a turbulent atmosphere are examined ...
2.5 kW average power, two-channel spectral-beam-combined output based on transmitting volume Bragg grating
2.5 kW average power, two-channel spectral-beam-combined output based on transmitting volume Bragg grating
Spectral beam combination based on volume Bragg gratings is an effective approach to obtaining high power laser output. In spectral beam combining system, spectral channel spacing ...
Approximate Dynamic Programming: An Efficient Machine Learning Algorithm
Approximate Dynamic Programming: An Efficient Machine Learning Algorithm
We propose an efficient machine learning algorithm for two-stage stochastic programs. This machine learning algorithm is termed as projected stochastic hybrid learning algorithm, a...
The Advancement of Lasers in Skin Health
The Advancement of Lasers in Skin Health
Lasers have evolved quite drastically since their roots were discovered back in 1900. Today, lasers have a prevalent place in the skincare world and are used to treat a wide variet...