Results 21 to 30 of about 4,937,607 (303)
Frontiers in Optics and Photonics, 2020 Optical devices have been traditionally fabricated using materials whose chemical and physical properties are finely tuned to perform a specific, single, and often static function, whereby devices’ variability is achieved by design changes.
G. Guidetti, Yu Wang, F. Omenetto
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Active Support System for the Correction of a 4m SiC Primary Mirror Based on the Bending Mode
Applied Sciences, 2023 Active optics is a key technology in ground-based large-aperture telescopes. The active correction of the surface shape of the primary mirror is used to reduce the surface shape error and improve the imaging quality.
Zhiyuan Yu, Xiaoxia Wu, Fuguo Wang
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Micromachines, 2023 An active optical system with three segmented mirrors was proposed to verify the co-focus and co-phase progress. In this system, a kind of large-stroke and high-precision parallel positioning platform was specially developed to help support the mirrors ...
Zihao Yin +6 more
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Recent Developments in UV Optics for Ultra-Short, Ultra-Intense Coherent Light Sources
Photonics, 2015 With the advent of Free Electron Lasers and general UV ultra-short, ultra-intense sources, optics needed to transport such radiation have evolved significantly to standard UV optics.
Daniele Cocco
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IEEE Access, 2020 In the co-phasing techniques applied to the segmented telescope, a Shack-Hartmann wavefront sensor cannot accurately detect the piston error of the segment. Although the phase diversity (PD) algorithm can detect the piston error of each segment, it fails
Haifeng Cao +4 more
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Advances in Meta-Optics and Metasurfaces: Fundamentals and Applications
Nanomaterials, 2023 Meta-optics based on metasurfaces that interact strongly with light has been an active area of research in recent years. The development of meta-optics has always been driven by human’s pursuits of the ultimate miniaturization of optical elements, on ...
Kai Ou +9 more
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The Development and Progression of Micro-Nano Optics
Frontiers in Chemistry, 2022 Micro-Nano optics is one of the most active frontiers in the current development of optics. It combines the cutting-edge achievements of photonics and nanotechnology, which can realize many brand-new functions on the basis of local electromagnetic ...
Yong Wang +32 more
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Optical Gain of Vertically Coupled Cd0.6Zn0.4Te/ZnTe Quantum Dots
Nanomaterials, 2023 The optical modal gain of Cd0.6Zn0.4Te/ZnTe double quantum dots was measured using a variable stripe length method, where large and small quantum dots are separated with a ZnTe layer.
Ming Mei +6 more
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Frequency Standards and Metrology, 2009 This letter presents the principles and techniques of active optical clock, a special laser combining the laser physics of one-atom laser, bad-cavity gas laser, super-cavity stabilized laser and optical atomic clock. As an example, a compact version of active optical clock based on thermal Strontium atomic beam shows a quantum-limited linewidth of 0.51
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Active optics for next generation of space observation instruments
International Conference on Space Optics, 2019 Thales Alenia Space has been involved in the design and the development of space observation instruments for over 40 years. This paper will explain why active optics is needed for next generation of instruments for Earth observation.
T. Viard +10 more
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