Results 291 to 300 of about 644,059 (323)
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Bessel beam generation using a segmented deformable mirror.
Applied Optics, 2018Bessel beams with tunable spot size are desirable for many applications such as laser material processing, optical trapping, and imaging. In this paper, we report experimental and simulation results of using a segmented deformable mirror to generate zero-
Xiaoming Yu, A. Todi, Hongmei Tang
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Push-pull electrostatic deformable mirrors
SPIE Proceedings, 2008Deformable membrane mirrors have a lot of advantages if compared with other adaptive optics devices such as bimorph mirrors, liquid crystal modulators, and thermal mirrors. Their properties are good optical power, low cost, limited power consumption, achromaticity and a good dynamic behavior. Their use in technological applications is limited by the
S Bonora +3 more
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Controlling TW-laser pulse long-range filamentation in air by a deformable mirror.
Applied Optics, 2018The results of experiments and theoretical modeling of the multiple filamentation of terawatt-power femtosecond laser pulses on a 137 m long air path are presented.
D. V. Apeksimov +6 more
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Thermal Deformations of Solid Mirrors
Applied Optics, 1970The tensor equations of elasticity including temperature terms in nonorthogonal coordinates are presented in a form suitable for the method of dynamic relaxation. A nonorthogonal coordinate system that includes a wide class of circular solid mirrors or lenses is described.
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Generation of high-quality tunable Airy beams with an adaptive deformable mirror.
Optics Letters, 2018Self-accelerating Airy beams have emerged to hold great promise in wide applications due to their non-diffraction and self-healing characteristics.
Jianqiang Ma +5 more
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Continuous photocontrolled deformable membrane mirror
Applied Physics Letters, 2010We present a deformable mirror that is composed by a metalized membrane with a monolithic nonpixelated photoconductive Bi12SiO20 substrate. The assembly constitutes a continuous photocontrolled deformable mirror and is driven through suitable light intensity distributions illuminating the photoconductive element.
Bonora S +3 more
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Optimization and performance of multi-deformable mirror correction on the THD2 bench
Astronomical Telescopes + Instrumentation, 2018High-contrast imaging (HCI) techniques appear like the best solutions to directly characterize the atmosphere of large orbit planets and planetary environments. In the last 20 years, different HCI solutions have been proposed based on coronagraphs.
P. Baudoz +5 more
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A ferrofluidic deformable mirror for ophthalmology
SPIE Proceedings, 2005Optical aberrations reduce the imaging quality of the human eye. In addition to degrading vision, this limits our ability to illuminate small points of the retina for therapeutic, surgical or diagnostic purposes. When viewing the rear of the eye, aberrations cause structures in the fundus to appear blurred, limiting the resolution of ophthalmoscopes (
Anna M. Ritcey +7 more
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Modeling and Control of a Deformable Mirror
Journal of Dynamic Systems, Measurement, and Control, 2002A multi-input multi-output surface shape control system model is developed to study wavefront aberration correction. The plant model represents a deformable mirror and utilizes a finite element model that is validated using an actual prototype deformable mirror and an interferometer system.
J. H. Chung +2 more
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Deformable Mirror based Optimal PSF Engineering for 3D Super-resolution Imaging
bioRxiv, 2022S. Fu +6 more
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