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High-precision system for wavefront control
SPIE Proceedings, 2000Wavefront control is a key issue for developing different systems including: lasers (for various applications: isotopic separation, femto second solid state lasers, micro lithography...), imaging through turbulent media, ophthalmology... For these purposes, we have developed an adaptive optics system that can achieve wavefront very high precision ...
Pascal Jagourel +2 more
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Wavefront Reconstruction and Control Systems
1998Abstract The control system is the vital link between the wave front sensor and the wavefront corrector in all adaptive optics systems. Its function is to convert the wavefront measurements made by the sensor into a set of commands that are applied to the wavefront corrector to satisfy a suitable performance criterion, such as minimizing
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Graphene Metasurface for THz Wavefront Control
JSAP-OSA Joint Symposia 2014 Abstracts, 2014Terahertz (THz) technology is now becoming more important with the potential applications in biochemical sensing, security detection, and high-speed communication. However, because of lack of active materials for THz wave, wave control, e.g. intensity and phase distribution, is still challenging.
Takumi Yatooshi +2 more
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Wavefront control by an optical-feedback interferometer
Optics Communications, 1989Abstract An optical feedback interferometer with a liquid-crystalline space-time modulator has been proposed and experimentally investigated. The effective suppression of the wavefront aberration was observed experimentally.
M.A. Vorontsov +2 more
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Unified coronagraph and wavefront control design
SPIE Proceedings, 2011Numerous coronagraph designs for high-contrast imaging in space have been proposed, differentiated by various performance metrics, such as throughput, inner working angle, bandwidth, ease of implementation (a surrogate for cost), sensitivity, and robustness.
N. Jeremy Kasdin +4 more
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Optimization of Wavefront Control using a High Resolution Wavefront Sensor
Final paper completed as part of the 2014 Summer High School Academic Research Program with the Laboratory for Laser Energetics at University of Rochester. Authored by Willie Franceschi of Victor Senior High School.openaire +1 more source
Experiments On Wavefront Control Using Wavefront Sensing And Hill Climbing Techniques
SPIE Proceedings, 1989A number of experiments have been made with two adaptive optical systems. A 19 element deformable mirror with serial hilt-climbing control system is used to correct static wavefront errors. A system with 21-element deformable mirror and real-time wavefront sensing with shearing interferometer is used to correct dynamic errors.
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Recent Topics in Wavefront Sensing and Control
Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing, 2008Image-based wavefront sensing has been advanced by several new twists on phase retrieval algorithms.
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Wavefront Reconstruction and Control
2022Robert K. Tyson, Benjamin W. Frazier
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Phase-Diverse Wavefront Sensing and Control
Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing, 2008Improved computational capabilities render phase-diverse wavefront sensing to be a viable choice for selected adaptive-optics applications. Phase diversity acquires informative data with simple optical hardware, works with low-contrast extended scenes, and accommodates wavefront discontinuities.
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