Results 11 to 20 of about 21,086 (310)

Active Aberration Correction with Adaptive Coefficient SPGD Algorithm for Laser Scanning Confocal Microscope

Sensors, 2022
A laser scanning confocal microscope (LSCM) is an effective scientific instrument for studying sub-micron structures, and it has been widely used in the field of biological detection. However, the illumination depth of LSCMs is limited due to the optical
Kunhua Zhou, Zhizheng Wu, Tianyu Zhang, Feng Li, Azhar Iqbal, Suresh Sivanandam   +5 more
doaj   +1 more source

Amplitude Zone Plate in Adaptive Optics: Proposal of the Principle

Photonics, 2022
One of the main elements in hardware-based adaptive optics systems is a deformable mirror. There is quite a large number of such mirrors based on different principles and exhibiting varying performance.
Vasily Matkivsky, Alexsandr Moiseev, Pavel Shilyagin, Grigory Gelikonov   +3 more
doaj   +1 more source

Comparison of closed loop and sensorless adaptive optics in widefield optical microscopy [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
We report on a closed loop widefield adaptive optics, optical microscopy system in which the feedback signal is provided by backscattered light from the sample acting as a guide star.
Bourgenot C., Saunter C. D., Love G. D., Girkin J. M.   +3 more
doaj   +1 more source

Fully Convolutional Approaches for Numerical Approximation of Turbulent Phases in Solar Adaptive Optics

Mathematics, 2021
Information on the correlations from solar Shack–Hartmann wavefront sensors is usually used for reconstruction algorithms. However, modern applications of artificial neural networks as adaptive optics reconstruction algorithms allow the use of the full ...
Francisco García Riesgo, Sergio Luis Suárez Gómez, Enrique Díez Alonso, Carlos González-Gutiérrez, Jesús Daniel Santos   +4 more
doaj   +1 more source

The MAORY first-light adaptive optics module for E-ELT [PDF]

, 2015
The MAORY adaptive optics module is part of the first light instrumentation suite for the E-ELT. The MAORY project phase B is going to start soon.
Ragazzoni R., De Caprio V., Agapito G., Cortecchia F., Delboulbe A., Henault F., Riva M., Giro E., Bonaglia M., Lauria M., Pareschi G., Biliotti V., Briguglio R., Verinaud C., Esposito S., Busoni L., Spano P., Giordano C., Rochat S., Ramsay S., Bregoli G., Oberti S., Ferruzzi D., Ventura N., Arcidiacono C., Lafrasse S., Baruffolo A., Cascone E., Rabou P., Carbonaro L., Felini C., Schreiber L., Bellazzini M., Foppiani I., Xompero M., Roussel F., De Rosa A., Fiorentino G., De Pascale M., Ciliegi P., Ghigo M., Sztefek M. -H., Saracco P., Spavone M., Fini L., Magnard Y., Maurel D., Puglisi A., Roux A., Maiorano E., Le Coarer E., Di Rico G., Riccardi A., Morgante G., Cosentino G., Mapelli M., Moulin T., Fantinel D., Butler R. C., Jocou L., Lombini M., Marchetti E., Gluck L., Michaud L., Feautrier P., Zerbi F. M., Carlotti A., Diolaiti E., Ricciardi S., Abicca R., Mannucci F., Salasnich B., Zins G., Correia J. -J., Patti M., Stadler E., Casali M., Kerber F., Brissaud O., Del Vecchio C.   +79 more
core   +2 more sources

Optique adaptative et telescopes geants

Comptes Rendus. Mécanique, 2023
Adaptive optics (AO), now installed on all the astronomical ground-based telescopes, make it possible to overcome the angular resolution limitations imposed by atmospheric turbulence.
Fusco, Thierry
doaj   +1 more source

Testing and characterization of challenging optics and optical systems with Shack Hartmann wavefront sensors [PDF]

EPJ Web of Conferences, 2019
The Shack-Hartman wavefront sensor is a common metrology tool in the field of laser, adaptive optics and astronomy. However, this technique is still scarcely used in optics and optical system metrology.
Siv Julie, Mayer Rafael, Beaugrand Guillaume, Tison Guillaume, Juvénal Rémy, Dovillaire Guillaume   +5 more
doaj   +1 more source

Optical design of the laser launch telescope via physical optics theorem for laser guide star facility

Results in Optics, 2021
The Laser Guide Star Facility (LGSF), as the most important part of the adaptive optics system of the large ground-based telescope, is aimed to generate multiple laser guide stars at the sodium layer.
Yan Mo, Zhengbo Zhu, Zichao Fan, Donglin Ma   +3 more
doaj   +1 more source

System theoretic tools in adaptive optics [PDF]

2009 IEEE International Conference on Control and Automation, 2009
Adaptive Optics (AO) systems provide a real challenge to the control engineer in many respects, the foremost of which are scalability and computational complexity of the control algorithms. On the other hand, systems theoretic tools can be applied to look at several problems under new perspectives.
BEGHI, ALESSANDRO, CENEDESE, ANGELO, MASIERO, ANDREA   +2 more
openaire   +2 more sources

Literature Review on Adaptive Optics [PDF]

INCAS Bulletin
Adaptive optics (AO) is defined as a technology developed to compensate for wavefront distortions caused by atmospheric turbulence or microscopic heterogeneities, thereby enhancing image quality in observational astronomy and biological microscopy.
Muaayed F. AL-RAWI, Mhnd FARHAN
doaj   +1 more source