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Excelitas Technologies Corp. - X-Cite Vitae MR 11/24

Sheetak - Cooling at your Fingertip 11/24 HP

8,726 terms

Photonics Dictionary

thresholding

The process of defining a specific intensity level for determining which of two values will be assigned to each pixel in binary processing. If the pixel's brightness is above the threshold level, it...

throughput -> etendue

A product of the area of a light beam (normal to its direction of propagation) and the solid angle that the beam includes; flux per unit radiance or luminance. Alternative terms: geometric extent,...

thyratron

An arc discharge tube having a grid that is used to start the discharge through an atmosphere of inert gas or vapor at low pressure.

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.

THz

terahertz

TIA

transimpedance amplifier; Telecommunications Industry Association

TID

time interval distribution

TIFF

tag-based image file format

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 constant

The amount of time needed for a detector signal or electronic circuit to reach 63 percent of its final value after a fixed incident power is first applied.

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-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...

transforming lens

TLC

thin-layer chromatography

TLP

transmission line pulse

TLR

twin-lens reflex

TLV

threshold limit value

transverse magnetic

TMA

three-mirror anastigmat

TMBS

torque motor-beam steerer

TMC

total metal ceramic

TMO

thermomagnetic optical disc

TMR

transmyocardial revascularization

TN-LCD

twisted nematic liquid crystal display

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Photonics Dictionary

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