PI Physik Instrumente - Microscope Stages LB ROS 11/24

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Excelitas PCO GmbH - Industrial Camera 11-24 VS HP

8,726 terms

Photonics Dictionary

transit -> surveying instruments

Instruments used for measuring angles and occasionally lengths on the ground. The principal surveying instruments are the level, the stadia telescope, the transit and the theodolite. Laser...

transition

The process whereby a quantum mechanical system alters from one energy level to another. During this process, energy is emitted or absorbed, and it usually takes the form of photons, phonons, or...

transition metal

Transition metals are elements found in the d-block of the periodic table, which includes groups 3 to 12. They are characterized by their partially filled d orbitals in the electron configuration....

translucent

Pertaining to materials having the property of reflecting a part and transmitting a part of the incident radiation.

translucent screen

A screen composed of a sheet of diffusing plastic material that reveals excellent image detail for close viewing. It is efficient for use with microfilm readers.

transmission efficiency

Measure of the amount of light that is transmitted, relative to the amount lost by absorption or reflection.

transmission electron microscope

A transmission electron microscope (TEM) is a powerful microscopy technique that uses a beam of electrons to create high-resolution images of extremely thin samples. In a TEM, electrons are...

transmission grating

A transparent diffraction grating that serves to transmit light.

transmission hologram

A hologram that is illuminated by a source opposite the viewer.

transmission limit

A restricting wavelength above or below which a specified form of radiation is totally almost absorbed by a specified medium.

transmission loss

The decrease in power that occurs when an optical beam or signal is transmitted through a system.

transmission plane

In polarized light, the plane of vibration that a polarizer will transmit.

transmission sphere

A precision lens designed to convert the plane wavefront output of an interferometer to a spherical wavefront for the testing of curved (spherical) surfaces.

transmission window -> spectral window

A wavelength region of relatively high transmittance, surrounded by regions of low transmittance.

transmission

In optics, the conduction of radiant energy through a medium. Often denotes the percentage of energy passing through an element or system relative to the amount that entered. See transmission...

transmissivity

The internal transmittance per unit thickness of a nondiffusing material.

transmissometry

The methods used to determine the extinction characteristics of a medium.

transmittance

The ratio of the radiant power transmitted by an object to the incident radiant power.

transmitter central wavelength range

The central wavelength range of a transmitter based on the worst-case scenarios of temperature, manufacturing and other variations.

transmitter

In fiber optic communications, a light source whose beam can be modulated and sent along an optical fiber, and the electronics that support it.

transparency

An image affixed to a transparent photographic film or plate by photographic, printing or chemical methods. It may be viewed by transmitted light.

transparency illuminator

A metal box with an opal glass front enclosing a lamp, used for viewing color transparencies or x-ray films.

transparent

Capable of transmitting light with little absorption and no appreciable scattering or diffusion.

transparent electrophotographic films

Imaging materials that generally consist of a polyester base, a transparent electrically conductive layer and an organic photoconductive top coating. When charged and exposed to light, an...

transponder

A receiver-transmitter device that automatically transmits a signal when the proper interrogating signal is received.

transport shift register

The element in a charge-coupled device that receives the charge packets transferred from the line of sensor sites and then delivers the image data to the device's output circuitry.

transport theory approximations

Multiple scattering method used in biological analysis in which approximations yield simple, explicit solutions, at least for slab geometry. The approximations are usually differential equations...

transposition

In optics, the changing of the relative curves of a lens without changing its refractive value.

transputer

A computer whose architecture contains several CPU chips arranged in parallel. Often used in image processing systems.

transverse chromatic aberration

An alternate term for lateral chromatic aberration. See chromatic aberration.

transverse coherence -> spatial coherence

The maintenance of a fixed-phase relationship across the full diameter of a cross section of a laser beam.

transverse electric mode -> transverse mode

In the context of optics and lasers, a transverse mode refers to a specific spatial pattern of the electric field within the cross-section of a laser beam. These modes represent the different...

transverse electromagnetic mode -> transverse mode

In the context of optics and lasers, a transverse mode refers to a specific spatial pattern of the electric field within the cross-section of a laser beam. These modes represent the different...

transverse field modulator

A Pockels cell in which electrical current is applied in a direction orthogonally to that of the light beam.

transverse interferometry

The method used to measure the index profile of an optical fiber by placing it in an interferometer and illuminating the fiber transversely to its axis.

transverse mode

In the context of optics and lasers, a transverse mode refers to a specific spatial pattern of the electric field within the cross-section of a laser beam. These modes represent the different...

transverse offset loss -> lateral offset loss

A power loss caused by transverse or lateral deviation from optimum alignment of source to optical waveguide, waveguide to waveguide, or waveguide to detector.

transverse offset method

A technique used to measure the mode-field diameter of an optical fiber by scanning one fiber past another at a distance of five microns or less.

transverse pumping

The laser pumping that exhibits an advantage over longitudinal pumping in that the threshold pump power density can be lowered approximately in proportion to the laser length.

transverse scattering

The method for measuring the index profile of an optical fiber or preform by illuminating it coherently and transversely to its axis, and examining the far-field radiation pattern.

transversely excited atmosphere carbon dioxide laser

Abbreviated TEA CO2 laser. A gas laser that provides shorter pulses and higher peak powers than conventional CO2 lasers. The electrical excitation pulse occurs transversely to the optical axis...

transversely excited atmosphere laser

Also known as TEA laser. A coherent optical source with a wide wavelength range in the infrared, visible and ultraviolet that uses an electrical discharge transverse to (across) the optical axis to...

TRAPATT

trapped plasma avalanche-triggered transit

trapezium distortion

The distortion of an image formed by a cathode-ray tube, caused by unbalanced deflection voltages or deflection voltages that are not symmetrically aligned with the resultant anode potential.

trapped mode -> guided mode

In an optical waveguide, a mode whose field decays monotonically in the transverse direction everywhere external to the core and which does not lose power to radiation. Also called bound mode.

trapped plasma avalanche-triggered transit

Oscillator device composed of a semiconducting diode in a coaxial resonating cavity. When the biasing current is applied to the diode, high-frequency waves are emitted into the cavity where they are...

trapped ray -> guided ray

In an optical waveguide, a ray that is completely confined to the core.

traveling microscope

A measuring instrument composed of a microscope and reticle, and mounted on a calibrated slide mechanism. May be used accurately to determine the distance between objects being viewed.

traveling wave phototube

A traveling wave tube (TWT) containing a photocathode and window that, receiving a laser beam, produces a modified photoelectric current that is accelerated and propagated into its helical frame.

trepanner

A tool used in cutting circular holes around a center. Also, a laser cutter in which the beam moves in relation to the cut surface.

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