Search
Menu
CASTECH INC - New Building the Bridge of Light
amplitude Dictionary Terms

time-correlated single photon counting
Time-correlated single photon counting (TCSPC) is a technique used in photon counting applications, particularly in the...
time-to-amplitude converter
A time-to-amplitude converter (TAC) is an electronic circuit that converts a time interval between two events into an...
infrared signal generator
A device that combines electronic and optical techniques to form a monitored infrared signal between 1 and 14 µm. It...
acoustophotorefractive effect
The change in refractive index that occurs as acoustic vibrations are transmitted through an optical material.The index...
waveform analyzer
A device designed to measure the amplitude and frequency of the elements in a complex waveform.
amplitude shift keying
In digital data transmission, the representation of a bit by change in amplitude of the outgoing signal. Amplitude shift...
metasurfaces
Metasurfaces are two-dimensional arrays of subwavelength-scale artificial structures, often referred to as meta-atoms or...
scanning spectroradiometer
A spectroradiometer having a means to scan different regions of the light spectrum, providing simultaneous representations...
propagation constant
For an electromagnetic field mode varying sinusoidally with time at a given frequency, the logarithmic rate of change, with...
electroluminescent-photoconductive image intensifier
A panel of photoconductive and electroluminescent layers used as either a positive or negative image intensifier, depending...
transfer function
The complex function, H(f), equal to the ratio of the output to input of the device as a function of frequency. The...
Gaussian beam
A beam of light whose electrical field amplitude distribution is Gaussian. When such a beam is circular in cross section,...
Kerr soliton
A Kerr soliton refers to a specific type of soliton, a self-reinforcing wave packet, that arises in nonlinear optical...
electric vector
The electric field associated with an electromagnetic wave and thus with a lightwave. The electric vector specifies the...
attenuation-limited power
In fiber optics, the limitation on performance imposed by the amplitude of a received signal rather than distortion.
optical theorem
A fundamental law of wave scattering theory that connects the extinction cross section of a scatterer to the real part of...
electro-optic modulator
An electro-optic modulator (EOM) is a device used to modulate the amplitude, phase, or polarization of light waves using an...
standing wave
The combination of two waves having the same frequency and amplitude and traveling in opposite directions. Standing waves...
wave function
The point function in a wave equation that represents the amplitude.
interference
1. The additive process whereby the amplitudes of two or more overlapping waves are systematically attenuated and...
frequency domain
The frequency domain is a concept used in signal processing and analysis to represent signals and data in terms of their...
distortion-limited operation
The limitation on performance imposed by the distortion of a received signal rather than its amplitude or power.
bias buildup
Degradation factor in coherent light systems where the amplitude of the recorded signal is decreased as the number of object...
attenuator
An electronic transducer, either fixed or adjustable, that reduces the amplitude of a wave without causing significant...
modulated grating hologram
A computer-generated, phase-and-amplitude, off-axis hologram made by a multi-exposure technique that uses three computer...
attenuation
Attenuation refers to the gradual loss or reduction of intensity, force, or magnitude of a particular property as it...
linear optics
Linear optics refers to the study and manipulation of light in a linear and deterministic manner, where the response of...
Secondary Speckle Pattern
A self-interference effect that generates random patterns; secondary speckle pattern (SSP) typically occurs in diffuse...
amplitude hologram
A hologram in which diffraction is produced by the silver image, resulting in a dimmer image than in a phase hologram, where...
digital holographic microscopy
Digital holographic microscopy (DHM) is an advanced imaging technique that combines holography and digital image processing...
resonance
Resonance can be defined in various contexts, including physics, chemistry, and music. Here are definitions for resonance in...
carrier
An analog signal capable of being modulated as to frequency, amplitude or phase to carry information.
computer-generated hologram
A computer-generated hologram (CGH) is a holographic image produced using computational methods and algorithms, rather than...
aperture illumination
The amplitude, polarization and phase contained in the field distribution over the aperture.
adaptive optics
Adaptive optics (AO) is a technology used to improve the performance of optical systems by reducing the effects of...
detector noise-limited operation
In optical communication systems, operations in which the amplitude of the pulses, as opposed to their width, determines the...
surface acoustic wave
An acoustic wave that propagates along the surface of a solid and decays exponentially with substrate depth. Also called a...
time division multiplex
The process or device by which more than one signal can be sent over a single channel by using different time intervals for...
semitransparent and p-phase annular aperture
An aperture consisting of a semitransparent central region whose amplitude transmittance only is varied, and the relative...
continuous wave
Continuous wave (CW) refers to a type of signal or transmission where the signal is constant and does not vary with time. In...
acousto-optic modulator
A device that varies the amplitude and phase of a light beam; e.g., from a laser or by sound waves. Also known as a Bragg...
computer-calculated diffraction pattern
The use of computer analysis in the calculation of diffraction patterns for information on the design of optical systems. In...
closed-loop adaptive single parameter
A closed-loop system that compensates for thermal blooming by optimizing only one parameter: the amplitude of the phase...
modulator
A modulator is a device or component that modifies a carrier signal in order to encode information for transmission over a...
coherent communications
A fiber optic communications system that works on the principles of homodyning or heterodyning. The transmitting laser...
power modulation
Power modulation refers to the intentional variation of power levels in a signal, often in the context of electronic...
time domain
The time domain is a concept used in signal processing and analysis to describe signals in terms of their behavior over...
stimulated emission
Radiation similar in origin to spontaneous emission but determined by the presence of other radiation having the same...
laser optics
Laser optics refers to a broad category of optical components and systems designed for manipulating and controlling laser...
image-enhancing equipment
Complex devices, often involving a computer, in which a photograph is scanned by a point of light, the amplitude of the...
companding
A deliberately nonlinear amplitude modulation that strengthens weak signals and reduces strong signals for transmission.
discriminator
A circuit incorporated into counter systems that records only pulses that have amplitudes between two preselected limits.
image enhancing equipment
Complex devices, often involving a computer, in which a photograph is scanned by a point of light, the amplitude of the...
photoacoustic calorimetry
Periodic interruptions of a light beam incident on an absorbing medium that produce heat, expansion and acoustic wave...
modulation
In general, changes in one oscillation signal caused by another, such as amplitude or frequency modulation in radio which...
amplitude-modulated sensor
A type of fiber optic sensor that detects alteration in position, distance, pressure, liquid level or temperature by...
atomic scattering factor
The efficiency of scattering by an atom in a particular direction, expressed as: where AA is the amplitude of the wave from...
amplitude (light)
The magnitude of the electric vector of a wave of light. See electric vector; magnetic vector.
spatial light modulator
A spatial light modulator (SLM) is an optical device that modulates or manipulates the amplitude, phase, or polarization of...
optical transform image modulation
A technique for detecting and measuring atmospheric pollution, in which an oscillating mirror directs half the incoming...
electron speckle pattern interferometry
A method for detecting vibration amplitudes analogous to image holography, except that the film emulsion is replaced by a...
temporal response
Characteristic of deflected light power defined as the quadratic invariant function of the video signal amplitude.
holography
Holography is a technique used to capture and reconstruct three-dimensional images using the principles of interference and...
cathode modulation
The amplitude modulation through the application of modulating voltage to the cathode circuit.
spectrum analyzer
A scanning device used to cyclically tune through a given frequency range to determine the amplitude-frequency distribution...
square wave
A wave that changes from one amplitude to the other in a short time compared with the wavelength.
jitter
1. In relation to cathode-ray tube displays, errors in the signal's amplitude, phase or both that result in small, rapid...
atmospheric turbulence
Irregularities and disturbances in the atmosphere that are of particular interest because they induce random temporal and...
half bandwidth
The term half bandwidth (HBW) generally refers to the width of a spectral band or frequency range at half of its maximum...
digital signal processing
Digital signal processing (DSP) refers to the manipulation and analysis of signals, which are representations of physical...
relative intensity noise
The inherent laser amplitude noise relative to the average optical power produced by the laser; the RIN decreases rapidly as...
carrier-to-noise ratio
The ratio of the power of the carrier wave to that of unwanted signal distortions, or noise, before any nonlinear signal...
metalens
A metalens, short for "metasurface lens," is a type of optical lens that uses nanostructured materials to manipulate light...
elliptically polarized light
A light beam whose electric vectors are broken into two elements of unlike amplitudes that are perpendicular to each other...
contrast improvement
One area of image enhancement, accomplished by spatial filtering schemes, that usually involves attenuation of phase changes...
liquid crystal light valve
A liquid crystal light valve (LCLV), also known as a spatial light modulator (SLM), is an optical device that modulates the...
magnitude
In astronomy, the relative brightness of a celestial body. Originally a scale from 1 to 6, where 1 represented the brightest...
meta-optics
Meta-optics, also known as metasurface optics or flat optics, is a branch of optics that involves the design, fabrication,...
lensless microscopy
Lensless microscopy, also known as computational or holographic microscopy, is an imaging technique that captures and...
bandwidth-limited operation
In fiber optics, the limitation on performance imposed by the system bandwidth rather than the amplitude of the signal.
voltage multiplier
A device that converts alternating voltage to direct voltage, while at the same time increasing its amplitude.
circularly polarized light
A light beam whose electric vectors can be broken into two perpendicular elements that have equal amplitudes and that differ...
phase-only filter
A type of matched filter that responds only to the phase of incoming light; the output has a much greater intensity than...
harmonic wave analyzer
An instrument designed to calculate the amplitude and phase of the different harmonic elements of a radiation wave utilizing...
resonator
A resonator is a device or system that exhibits resonance, which is a phenomenon that occurs when an external force or...
pulse analyzer
The instrument used to analyze a pulsed electromagnetic wave to determine its time, amplitude, duration and shape, and to...

(86 results found)

Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Videos
Our Summits & Conferences
Industry Events
Bookstore
Join Our Community
Subscribe
Advertise
Become a member
Sign in
Contribute a Feature
Suggest a Webinar
Submit a Press Release
Mobile Apps

About Us
Our Company
Our Publications
Contact Us
Career Opportunities
Teddi C. Laurin Scholarship

Terms & Conditions
Privacy Policy
California Consumer Privacy Act (CCPA)



©2024 Photonics Media
100 West St.
Pittsfield, MA, 01201 USA
[email protected]
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.