Proceedings Article10.1117/12.2534008
Adaptive optics for laser-beam focusing through the pinhole
Alexis Kudryashov,Alexander Nikitin,Ilya Galaktionov,Julia Sheldakova,Vadim Samarkin,Alexey Rukosuev +5 more
- 09 Sep 2019
- Vol. 11107, pp 95-105
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TL;DR: In this article, the authors investigated the efficiency of the use of the bimorph deformable mirror to focusing laser beam in the pinhole and showed that tip-tilt correction is an essential condition for increasing the focusing efficiency.
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Abstract: In this work, we investigate the efficiency of the use of the bimorph deformable mirror to focusing laser beam in the pinhole. Pinholes of different diameters are used as an instrument for focusing verification. Different algorithms are discussed and analyzed for the investigation of the process of the beam focusing. It is shown that tip-tilt correction is an essential condition for increasing the focusing efficiency.
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Citations
Laser Beam Focusing Through a Moderately Scattering Medium Using LCOS-SLM
Ilya Galaktionov,Alexander Nikitin,Julia Sheldakova,Alexis Kudryashov +3 more
TL;DR: Experimental study of laser beam focusing through a moderately scattering medium using LCOS-SLM, achieving 5-13% focal spot diameter reduction, equivalent to mid-density fog with varying lengths from 300m to 5km.
References
Adaptive optical system based on bimorph mirror and Shack-Hartmann wavefront sensor
Alexey Rukosuev,Alexander I. Alexandrov,Valentina Ye. Zavalova,Vadim Samarkin,Alexis Kudryashov +4 more
- 01 Feb 2002
TL;DR: In this article, the authors proposed an adaptive optical closed loop system with bimorph mirror as a wavefront corrector and Shack-Hartmann wavefront sensor to compensate for the aberrations of the laser beam occurred during the distribution of the beam from laser to processed material.
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Hartmannometer versus Fizeau Interferometer: advantages and drawbacks
Alexander Nikitin,Julia Sheldakova,Alexis Kudryashov,D. G. Denisov,Valerii Karasik,Alexey Sakharov +5 more
TL;DR: In this article, the authors considered two approaches widely used in optical testing: Shack-Hartmann wavefront sensor and Fizeau interferometer technique and compared their features to those of FIZEau interferer.
21
The use of modified hill-climbing algorithm for laser beam focusing through the turbid medium
TL;DR: In this article, a bimorph deformable mirror with 14 electrodes was applied to increase the intensity of the focal spot in the far field to focus the laser beam propagated through scattering suspension of polystyrene microspheres in distilled water.
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•Dissertation
Binary wavefront optimization for focusing light through scattering media
Xiaolong Zhang
- 01 Aug 2014
TL;DR: Zhang et al. as discussed by the authors developed a genetic algorithm and a transmission matrix algorithm for focusing light with binary wavefront optimization and applied these methods to binary amplitude modulation with both a spatial light modulator and a digital light modulators.
7
Coupling efficiency of optics in single-mode fiber components
TL;DR: This paper combines fiber-coupling fundamentals, classical optics, and diffraction theory to provide a compact description of coupling efficiency that includes the effects of aberrations, fiber misalignments, and fiber-mode mismatch.