Results 91 to 100 of about 28,756 (270)
Digital three-color holographic interferometry for flow analysis
Optics Express, 2008 A digital three-color holographic interferometer was designed to analyze the variations in refractive index induced by a candle flame. Color holograms are generated and recorded with a three layer photodiode stack sensor allowing a simultaneous recording with a high spatial resolution.
Jean-Michel, Desse +2 more
openaire +2 more sources
Holographic recording of fast events on a CCD camera [PDF]
, 2002 We report on holographic recording of nanosecond events on a conventional CCD camera. Three frames of an air-discharge event, with resolution of 5.9 ns and frame interval of 12 ns, are recorded in a single CCD frame.
Centurion, Martin +4 more
core +1 more source
, 2018 One of the fundamental limitations in photonics is the lack of a bidirectional transducer that can convert optical information into electronic signals or vice versa.
Baek, YoonSeok +3 more
core +1 more source
Natural Crystal Structure for Generating Raman‐Like Orbital Angular Momentum States
Advanced Science, Volume 12, Issue 23, June 20, 2025.This work proposes a strategy for symmetry breaking of the degenerate OAM states relying on the natural anisotropy of crystal gain, to select the handedness of the spatial spiral phase front and further tunable Raman‐like OAM states by thermal‐driven, which clarifies the contribution of intrinsic crystal property to the OAM states and opens a new route
Tianxiang Meng +4 more
wiley +1 more source
Laser &Photonics Reviews, Volume 19, Issue 9, May 6, 2025.Digital holography interferometry (DHI) is used for thermal imaging and characterization of supercooled liquids. This work details a custom DHI platform with a thermoelectric cooling system capable of two‐dimensional temperature mapping and refractive index measurement of various aqueous solutions.
Crysthal Alvarez +6 more
wiley +1 more source
Advanced Materials, Volume 37, Issue 14, April 9, 2025.From oil refining to high refractive index photopolymers for bulk plastic optics. The synthesis of a new photopolymer resin derived from inexpensive sulfur petrochemicals is reported affording a high‐quality optical glass that is amenable to a wide range of photopolymerization‐based fabricated methods, including 3D Printing, for precision plastic ...
Chisom Olikagu +20 more
wiley +1 more source
Information retrieval from holographic interferograms: Fundamentals and problems [PDF]
Holographic interferograms can contain large amounts of information about flow and temperature fields. Their information content can be very high because they can be viewed from many different directions. This multidirectionality, and fringe localization
Vest, Charles M.
core +1 more source
Heterodyne Holography with full control of both signal and reference arms
, 2015 Heterodyne holography is a variant of phase shifting holography in which reference and signal arms are controlled by acousto optic modulators. In this review paper, we will briefy describe the method and its properties, and we will illustrate its ...
Gross, Michel
core +3 more sources
Fiber-optic projected-fringe digital interferometry [PDF]
A phase-stepped projected-fringe interferometer was developed which uses a closed-loop fiber-optic phase-control system to make very accurate surface profile measurements.
Beheim, Glenn, Mercer, Carolyn R.
core +1 more source
Study of optical techniques for the Ames unitary wind tunnel: Digital image processing, part 6 [PDF]
A survey of digital image processing techniques and processing systems for aerodynamic images has been conducted. These images covered many types of flows and were generated by many types of flow diagnostics.
Lee, George
core +1 more source