Results 151 to 160 of about 44,477 (288)
Microlens Array-Based Beam Profile and Wavefront Sensor With Physical Constraint Learning
IEEE Photonics JournalThe beam profile and wavefront characteristics of laser beams are essential for numerous laser applications, including micromachining and microfabrication.
Feng-Chun Hsu +3 more
doaj +1 more source
Bendable Fiber Lens for Minimally Invasive Endoscopy
Laser &Photonics Reviews, EarlyView.Translating ex vivo imaging to minimally invasive in vivo applications is of outstanding scientific and socioeconomic relevance. 3D imaging based on tiny lensless fiber endoscopes requires complex setups and computational schemes, so far. Bridging this gap, imaging through a unique optical fiber that mimics the functionality of a lens but is minimally ...
Ronja Stephan +10 more
wiley +1 more source
Full‐Space Spin‐Controlled Four‐Channel Metalens With Equal Power Distribution and Broad Bandwidth
Laser &Photonics Reviews, EarlyView.In article xxxxx, Alex M. H. Wong and co‐authors propose a multifunctional full‐space metalens supporting power‐efficient, broadband operation for four spin‐controlled output channels. The metalens separates an incoming wave into four equi‐power, spin‐decoupled and function‐decoupled waves (two transmitted and two reflected).
Xiaoluo He +3 more
wiley +1 more source
Concept Study of On-Instrument Wavefront Sensors (OIWFS) for the TMT IRIS Science Instrument [PDF]
, 2010 David Loop +16 more
openalex +1 more source
Laser &Photonics Reviews, EarlyView.Maximized emission enhancement is experimentally achieved using critical coupling in Brillouin zone folding metasurfaces. Maximized enhancements of polarized and unpolarized emissions from quantum dot‐coated dielectric metasurfaces are demonstrated in the normal direction.
Jungho Han +4 more
wiley +1 more source
Sub-Millisecond Phase Retrieval for Phase-Diversity Wavefront Sensor. [PDF]
Sensors (Basel), 2020 Wu Y, Guo Y, Bao H, Rao C.
europepmc +1 more source
FlyEyes: A CCD-Based Wavefront Sensor for PUEO, the CFHT Curvature AO System [PDF]
, 2010 Olivier Lai +14 more
openalex +1 more source
Reflections on the Spatial Exponential Growth of Electromagnetic Quasinormal Modes
Laser &Photonics Reviews, EarlyView.Quasinormal modes (QNMs) offer a robust framework for understanding the physics of resonators. However, conceptual challenges arise in regions distant from resonators, where QNM fields exponentially grow. This growth is not unphysical, but gives rise to counterintuitive effects, which is explained by examining fundamentals of non‐Hermitian systems ...
Tong Wu +2 more
wiley +1 more source
Nonlinear techniques for few-mode wavefront sensors [PDF]
arXivWe present several nonlinear wavefront sensing techniques for few-mode sensors, all of which are empirically calibrated and agnostic to the choice of wavefront sensor. The first class of techniques involves a straightforward extension of the linear phase retrieval scheme to higher order; the resulting Taylor polynomial can then be solved using the ...
arxiv