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8,289 terms
Photonics Dictionary
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thyristor
A family of semiconductor switching devices of which the silicon-controlled rectifier and the triac are most commonly used. They are fabricated from four positive and negative alternating layers.
TIA
transimpedance amplifier; Telecommunications Industry Association
TID
time interval distribution
tight buffer
Protective material surrounding the cladding of an optical fiber that allows the fiber no play within it.
TIM
->
thermal interface materials
Thermal interface materials (TIMs) are substances or compounds used to enhance the thermal conductivity between two surfaces in contact. These materials are primarily employed in electronic devices,...
time delay generator
->
digital delay generator
An instrument that can preselect intervals, often in increments of 1, 10 or 100 ns, for the generation of electronic pulses by means of front-panel switches. Also called a time-delay generator.
time delay integration
A method of scanning in which a frame transfer device produces a continuous video image of a moving object by means of a stack of linear arrays aligned with and synchronized to the movement of the...
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 the different signals. This may be done by varying the pulse duration,...
time domain
The time domain is a concept used in signal processing and analysis to describe signals in terms of their behavior over time. In the time domain, signals are represented as functions of time, showing...
time of flight
(TOF) The length of time needed for a signal to arrive at and be reflected from the target. The basis of an active autoranging/autofocus system.
time smear
The elongation of a transmitted data pulse through a fiber optic due to the chromatic dispersion of the fiber material.
time-averaged holographic interferometry
Multiple exposures of holograms, one for each position of a vibrating image, that are used for vibration analysis and that yield a record of the time-averaged irradiance distribution at the hologram...
time-averaged holography
Although low in sensitivity (approximately 10-7 m for helium-neon lasers), this holographic technique permits quantitative assessment of entire vibratory patterns of given structures in a single...
time-correlated single photon counting
Time-correlated single photon counting (TCSPC) is a technique used in photon counting applications, particularly in the field of experimental physics, biophysics, and fluorescence lifetime imaging...
time-domain reflectometer
See optical time-domain reflectometry (OTDR).
time-lapse camera
A cine camera that exposes a series of individual frames to record the changes in a subject that slowly alters with time. This results in the eventual showing of an event that happened over an...
time-lapse optical coherence tomography
Time-lapse optical coherence tomography (OCT) refers to a medical imaging technique that captures a series of sequential OCT scans over time, allowing for the dynamic observation and monitoring of...
time-resolved ultraviolet photodissociation mass spectrometry
Time-resolved ultraviolet photodissociation mass spectrometry (TR-UV-PDMS) is a specialized analytical technique used in mass spectrometry to study the dynamics of chemical reactions, molecular...
time-sharing laser
A laser fitted with up to eight optical fibers that transmit the energy to different workstations in turn.
time-to-amplitude converter
A time-to-amplitude converter (TAC) is an electronic circuit that converts a time interval between two events into an amplitude or voltage signal. TACs are commonly used in various scientific and...
TIMI
temperature-insensitive Michelson interferometer
tip-enhanced Raman scattering
Tip-enhanced Raman scattering (TERS) is a powerful technique that combines Raman spectroscopy with the enhanced spatial resolution provided by a sharp metallic or dielectric tip. TERS allows...
tip-enhanced Raman spectroscopy
A spectroscopic technique that combines the high chemical specificity of Raman scattering and signal sensitivity provided by surface plasmon resonance enhancement, with the nanoscale spatial...
TIR
total internal reflection; total image runout; total indicator reading
TIR-FM
total internal reflection fluorescence microscopy
TIR-FPL
total internal reflection face-pumped laser
TIRC
transimpedance receiver circuit
TIRF
total internal reflection fluorescence
TIROS
television and infrared observation satellite
tissue optics
The study of the optical properties of living tissue. Increased understanding of the behavior of light in this varied, turbid medium, especially its scattering and absorption characteristics, is...
tissue welding
The use of a surgical laser instead of sutures or staples to close a wound or rejoin severed blood vessels.
Ti:sapphire laser
A Ti:sapphire laser is a type of solid-state laser that utilizes a titanium-doped sapphire crystal as the gain medium. The name Ti:sapphire comes from the combination of titanium (Ti) as the dopant...
TL
transforming lens
TLC
thin-layer chromatography
TLP
transmission line pulse
TLR
twin-lens reflex
TM
transverse magnetic
TMA
three-mirror anastigmat
TMO
thermomagnetic optical disc
TMR
transmyocardial revascularization
TN-LCD
twisted nematic liquid crystal display
TO
transistor outline
TO package
Housing that resembles a small metal can for a semiconductor component, photodetector or similar device.
TODS
transportable optical disc system
token
In a local area network, a unique signal that travels from one node or station to another, providing them serially with access to the network for sending data.
tolerance field
In fiber optics, the annular region between two concentric circles; used to specify fiber cladding and core sizes.
tolerancing
The determination of the degree to which a manufactured component can deviate from its ideal specifications of material and geometry without impairing its performance.
tomography
Technique that defocuses activity from surrounding planes by means of the relative motions at the point of interest.
tomosynthesis
A variation of tomography in which several photographs of a patient are taken at different angles, and back-projection of the resulting radiographs produces light distribution in a chosen...
tonality
The distribution of gray-scale values in an image.
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Photonics Dictionary
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