Results 1 to 10 of about 49,183 (221)

Enhancing axial localization with wavefront control

Optics Express, 2023
Enhancing the ability to resolve axial details is crucial in three-dimensional optical imaging. We provide experimental evidence showcasing the ultimate precision achievable in axial localization using vortex beams. For Laguerre-Gauss (LG) beams, this remarkable limit can be attained with just a single intensity scan.
M. Peterek, M. Paúr, M. Vítek, D. Koutný, B. Stoklasa, L. Motka, Z. Hradil, J. Rehacek, L. L. Sánchez-Soto   +8 more
openaire   +3 more sources

Programming balanced optical beam splitters in white paint [PDF]

, 2014
Wavefront shaping allows for ultimate control of light propagation in multiple-scattering media by adaptive manipulation of incident waves. We shine two separate wavefront-shaped beams on a layer of dry white paint to create two enhanced output speckle ...
Goorden, S.A., Huisman, S.R., Huisman, T.J., Huisman, T.J., Mosk, Allard, Pinkse, Pepijn Willemszoon Harry   +5 more
core   +10 more sources

Study of a MEMS-based Shack-Hartmann wavefront sensor with adjustable pupil sampling for astronomical adaptive optics [PDF]

, 2008
We introduce a Shack-Hartmann wavefront sensor for adaptive optics that enables dynamic control of the spatial sampling of an incoming wavefront using a segmented mirror microelectrical mechanical systems (MEMS) device.
Baranec, Christoph, Dekany, Richard
core   +1 more source

Telescope to Observe Planetary Systems (TOPS): a high throughput 1.2-m visible telescope with a small inner working angle [PDF]

, 2006
The Telescope to Observe Planetary Systems (TOPS) is a proposed space mission to image in the visible (0.4-0.9 micron) planetary systems of nearby stars simultaneously in 16 spectral bands (resolution R~20). For the ~10 most favorable stars, it will have
/, Angel, James R. P., Bowers, Charles, Burge, James, Burrows, Adam, Codona, Johanan, Greene, Thomas, Guyon, Olivier, Iye, Masanori, Kasting, James, Martin, Hubert, McCarthy, Jr., Donald W., Meadows, Victoria, Meyer, Michael, Pluzhnik, Eugene A., Sleep, Norman, Spears, Tony, Tamura, Motohide, Tenerelli, Domenick, Vanderbei, Robert, Woodgate, Bruce, Woodruff, Robert A., Woolf, Neville J.   +22 more
core   +2 more sources

Focusing and Compression of Ultrashort Pulses through Scattering Media [PDF]

, 2011
Light scattering in inhomogeneous media induces wavefront distortions which pose an inherent limitation in many optical applications. Examples range from microscopy and nanosurgery to astronomy.
A Assion, A Derode, AM Weiner, BA Wilt, BJ Pearson, BK Andrasfalvy, C-L Hsieh, D Oron, D Oron, D Yelin, E Small, E Tal, Eran Small, F Lemoult, G Lerosey, H Rabitz, H Szmacinski, IM Vellekoop, IM Vellekoop, IM Vellekoop, IM Vellekoop, IM Vellekoop, J Aulbach, JC Diels, JM Dela Cruz, JW Goodman, M Aeschlimann, M Cui, M Fink, M Oheim, M Rueckel, MA Webster, MI Stockman, MJ Booth, NC Bruce, Ori Katz, P Sebbah, PM Johnson, RK Tyson, S Popoff, SM Popoff, T Čižmár, W Denk, Y Jiang, Yaron Bromberg, Yaron Silberberg, Z Yaqoob   +46 more
core   +1 more source

Advanced Wavefront Control Techniques [PDF]

, 2001
Programs at LLNL that involve large laser systems--ranging from the National Ignition Facility to new tactical laser weapons--depend on the maintenance of laser beam quality through precise control of the optical wavefront. This can be accomplished using adaptive optics, which compensate for time-varying aberrations that are often caused by heating in ...
Olivier, S. S., Brase, J. M., Avicola, K., Thompson, C. A., Kartz, M. W., Winters, S., Hartley, R., Wihelmsen, J., Dowla, F. V., Carrano, C. J., Bauman, B. J., Pennington, D. M., Lande, D., Sawvel, R. M., Silva, D. A., Cooke, J. B., Brown, C. G.   +16 more
openaire   +2 more sources

Coupling Plasmonic System for Efficient Wavefront Control

ACS Applied Materials & Interfaces, 2021
Efficient and flexible manipulation of electromagnetic waves using metasurfaces has attracted continuous attention in recent years. However, previous studies mainly apply sole resonance effect to accomplish the task. Here, we show that introducing a meta-coupling effect would reveal further physical insights in the electromagnetic wave control.
Li Niu, Quan Xu, Xueqian Zhang, Ziying Zhang, Shaoxian Li, Xieyu Chen, Yuehong Xu, Jiajun Ma, Ming Kang, Jiaguang Han, Weili Zhang   +10 more
openaire   +3 more sources

Coherent Raman Generation Controlled by Wavefront Shaping [PDF]

Scientific Reports, 2019
AbstractWe investigate the possibility of tailoring coherent Raman generated spectra via adaptive wavefront optimization. Our technique combines a spatial light modulator and a spectrometer providing a feedback loop. The algorithm is capable of controlling the Raman generation, producing broader spectra and an improved overall efficiency, and ...
Shutova, Mariia, Shutov, Anton D., Zhdanova, Alexandra A., Thompson, Jonathan V., Sokolov, Alexei V.   +4 more
openaire   +2 more sources

The Deformable Mirror Demonstration Mission (DeMi) CubeSat: optomechanical design validation and laboratory calibration

, 2018
Coronagraphs on future space telescopes will require precise wavefront correction to detect Earth-like exoplanets near their host stars. High-actuator count microelectromechanical system (MEMS) deformable mirrors provide wavefront control with low size ...
Allan, Gregory, Barnes, Derek, Cahoy, Kerri L., Douglas, Ewan S., Egan, Mark, Furesz, Gabor, Grunwald, Warren, Gubner, Jennifer, Haughwout, Christian, Holden, Bobby G., Pereira, Paula do Vale, Stein, Abigail J.   +11 more
core   +1 more source

Development of a scalable generic platform for adaptive optics real time control

, 2015
The main objective of the present project is to explore the viability of an adaptive optics control system based exclusively on Field Programmable Gate Arrays (FPGAs), making strong use of their parallel processing capability.
Burse, Mahesh P., Parihar, Padmakar, Ramaprakash, A. N., Surendran, Avinash   +3 more
core   +1 more source