Results 11 to 20 of about 15,498,863 (150)
Optical design of the SOXS spectrograph for ESO NTT [PDF]
Astronomical Telescopes + Instrumentation, 2018 An overview of the optical design for the SOXS spectrograph is presented. SOXS (Son Of X-Shooter) is the new wideband, medium resolution (R>4500) spectrograph for the ESO 3.58m NTT telescope expected to start observations in 2021 at La Silla.
R. Zanmar Sanchez +47 more
semanticscholar +3 more sources
Nonlinear adiabatic optical isolator [PDF]
, 2016 We theoretically propose a method for optical isolation based on adiabatic nonlinear sum frequency generation in a chirped quasi-phase-matching crystal with strong absorption at the generated sum frequency wave. The method does not suffer from limitations of dynamic reciprocity found in other nonlinear optical isolation methods, and can provide tunable
Longhi, Stefano, Rangelov, Andon
arxiv +4 more sources
Optical Design and Active Optics Methods in Astronomy [PDF]
, 2013 Optical designs for astronomy involve implementation of active optics and adaptive optics from X-ray to the infrared. Developments and results of active optics methods for telescopes, spectrographs and coronagraph planet finders are presented. The high accuracy and remarkable smoothness of surfaces generated by active optics methods also allow ...
Lemaitre, Gerard R.
arxiv +5 more sources
Optical design of the SuMIRe/PFS spectrograph [PDF]
Astronomical Telescopes and Instrumentation, 2014 The SuMIRe Prime Focus Spectrograph (PFS), developed for the 8-m class SUBARU telescope, will consist of four identical spectrographs, each receiving 600 fibers from a 2394 fiber robotic positioner at the telescope prime focus. Each spectrograph includes
S. Pascal +3 more
semanticscholar +3 more sources
Optical design of the TolTEC millimeter-wave camera [PDF]
Astronomical Telescopes + Instrumentation, 2018 TolTEC is a new camera being built for the 50-meter Large Millimeter-wave Telescope (LMT) in Puebla, Mexico to survey distant galaxies and star-forming regions in the Milky Way.
S. Bryan +9 more
semanticscholar +1 more source
Pixel level optical-transfer-function design based on the surface-wave-interferometry aperture [PDF]
, 2010 The design of optical transfer function (OTF) is of significant importance for optical information processing in various imaging and vision systems. Typically, OTF design relies on sophisticated bulk optical arrangement in the light path of the optical ...
Wang, Ying Min +2 more
core +1 more source
Opto-electronic high order feedback neural network [PDF]
, 1990 A novel neural network design, in which nonlinearities are created by feedback, is described. It is called the HOFNET. The design is suitable for optical implementation because it is tolerant of the limited dynamic ranges present in optical systems.
Mao, Z.Q. +2 more
core +1 more source
Optical designs for realization of a set of schemes for quantum cryptography [PDF]
Optical and Quantum Electronics 53 (2021) 206, 2020 Several quantum cryptographic schemes have been proposed and realized experimentally in the past. However, even with an advancement in quantum technology and escalated interest in the designing of direct secure quantum communication schemes there are not many experimental implementations of these cryptographic schemes. In this paper, we have provided a
arxiv +1 more source
Freeform imaging systems: Fermat's principle unlocks 'first time right' design [PDF]
Light Sci Appl 10, 95 (2021), 2020 For more than 150 years, scientists have advanced aberration theory to describe, analyse, and eliminate imperfections that disturb the imaging quality of optical components and systems. Simultaneously, they have developed optical design methods for and manufacturing techniques of imaging systems with ever-increasing complexity and performance up to the
arxiv +1 more source
Sub-Wavelength Passive Optical Isolators Using Photonic Structures Based on Weyl Semimetals [PDF]
Advanced Optical Materials (2020): 2000100, 2020 We design sub-wavelength high-performing non-reciprocal optical devices using recently discovered magnetic Weyl semimetals. These passive bulk topological materials exhibit anomalous Hall effect which results in magnetooptical effects that are orders of magnitude higher than those in conventional materials, without the need of any external magnetic ...
arxiv +1 more source