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Meadowlark Optics - Wave Plates 6/24 MR 2024

8,726 terms

Photonics Dictionary

injection locking

Injection locking, also known as injection-phase locking or injection-phase control, is a phenomenon in which a weak signal is synchronized with a stronger signal due to the injection of energy or...

injection luminescent diode

A semiconductor diode operating in either a coherent or incoherent mode that is used as a near-infrared or visible source in triggering light-activated devices.

injection molding

Injection molding is a manufacturing process used to produce parts by injecting molten material into a mold. It is widely used for creating a variety of plastic products, but it can also be used with...

injection seeding

The use of a small ultrastable master oscillator (a diode-pumped Nd:YAG laser) to achieve single-frequency operation of a large pulsed Nd:YAG host laser, providing improved bandwidth and temporal...

injection-mounted assembly

A process by which a plastic cell is molded around a glass lens or lenses to create a mount, eliminating the metal barrel and the need for glass-to-metal seals.

inline inspection

Inline inspection involves performing quality checks, measurements, or tests on products or materials while they are being produced or processed, rather than inspecting them separately in a dedicated...

inner focusing

In a camera, the movement of one or more lenses behind the front lens, rather than of the front lens itself, to bring the subject into focus. Because internal focusing does not require the front lens...

input/output

I/O stands for input/output. In computing, it refers to the communication between a computer system or program and its external environment, including peripherals, storage devices, networks, and...

inquiry display terminal -> display console

A visual display used with a computer to give access to the many elements of data as an array of points. With the display console, an operator may check information in the computer and change it if...

InSb

indium antimony

insertion loss

The total optical power loss caused by the insertion of an optical component such as a connector, splice or coupler into a fiber optic system. See attenuation.

inset

The horizontal distance between the 90° meridian of a bifocal lens and the geometrical center of the segment.

inside curves -> cementing surface

The surface of an element of a compound lens that will produce the cemented interface. The curves of this interface are called inside curves. To facilitate cementing, the two inside curves should...

inside vapor-phase oxidation

A method that produces low-loss optical fibers. A glass tube rotates while reactants pass through the tube and heat is externally applied by a burner that traverses the tube. The oxidizable vapors in...

inspection mirror

A small round mirror on the end of a handle used for viewing inside an inaccessible cavity.

instantaneous field of view

Instantaneous field of view (iFOV) is a term commonly used in the context of remote sensing, imaging systems, and optical instruments. It refers to the specific portion of a scene that an optical...

instrument myopia

The tendency to adjust an instrument such as a microscope so that the viewed image appears much closer than infinity.

integral density

With respect to color photography, the measurement of the way the color film modulates the radiant flux in the optical system containing the film.

integram

A reflection hologram using multiple color lasers that integrates various graphical techniques to allow the display of three-dimensional images of live objects in motion, as well as outdoor scenes,...

integrated circuit

Multiple, interconnected circuit elements, contained on or in a common substrate, that function as a unit and not separately.

integrated Dewar cooler assembly

An infrared detector mounted directly on the cold finger of the Dewar cooler rather than at the interface of Dewar and cooler, resulting in decreased size and power consumption and greater...

integrated energy

Also known as integrated exposure. A measurement of light from sources that vary rapidly with time, defined as the integral of instantaneous power and time and expressed as units per second.

integrated laser

A type of laser for which a large number of the components can be fabricated in or upon a single substrate.

integrated optical circuit

An optical circuit, either monolithic or hybrid, composed of active and passive components, used for coupling between optoelectronic devices and providing signal processing functions.

integrated optics

A thin-film device containing miniature optical components connected via optical waveguides on a transparent dielectric substrate, whose lenses, detectors, filters, couplers and so forth perform...

integrated photonics

Integrated photonics is a field of study and technology that involves the integration of optical components, such as lasers, modulators, detectors, and waveguides, on a single chip or substrate. The...

integrated radiance -> pulsed radiance

The integral of the radiance over exposure time.

integrated services digital network

A set of international standards by which a single telecommunications channel is used to transmit voice and data simultaneously.

integrating sphere

A hollow sphere coated internally with a white diffusing material and provided with openings for incident beam, specimen and detector used for measuring the diffuse reflectance or transmittance of...

integration time

Integration time, in the context of optics, imaging systems, and sensor technology, refers to the duration over which a sensor collects and accumulates incoming light or signal. It is a crucial...

intensified charge-coupled device camera

An intensified charge-coupled device (ICCD) camera is an advanced imaging device that combines the capabilities of both an image intensifier and a charge-coupled device (CCD) sensor to achieve...

intensified charge-coupled device

A CCD image sensor that uses a proximity-focused image intensifier to provide greater sensitivity at low light levels.

intensified vidicon

A standard direct-readout vidicon tube linked by fiber optics to an intensifier for increased sensitivity.

intensity

Flux per unit solid angle.

intensity interferometer

An interferometer that functions by first detecting the light striking each aperture and then combining the two detector outputs. With an intensity interferometer, the primary collectors need not be...

intensity modulation

The process in which the electron beam of a cathode-ray tube varies in intensity in accordance with the magnitude of the signals it receives.

intensity-modulated sensor

A type of fiber optic sensor that responds to a change in the intensity of received light caused by the displacement or other phenomena being measured.

interband cascade laser

An interband cascade laser (ICL) is a type of semiconductor laser that operates based on interband transitions between energy bands in a semiconductor material. Unlike traditional semiconductor...

interchangeable lens

A lens that has a mount, usually bayonet or screw type in design, that can be used on a camera in place of lenses with the same mounting. This allows one camera body to be used with lenses of...

interfacial angle

That angle found between a pair of adjacent faces of a crystal.

interference

1. The additive process whereby the amplitudes of two or more overlapping waves are systematically attenuated and reinforced. 2. The process whereby a given wave is split into two or more waves by,...

interference color

Color resulting from the interference between two light beams.

interference filter

A filter that controls the spectral composition of transmitted energy partially by the effects of interference. Frequently, these filters are made up of thin layers of metals and dielectrics,...

interference inverter

A device, consisting of a diode activated by an interference pulse, that is designed to minimize the white spots on a television screen that are intensified by interference.

interference microscope

A special form of microscope that utilizes interference for observing and measuring the phase and optical thickness in completely transparent objects and specimen. The object is placed in one beam...

interference spectrum

The spectrum produced by the interference of light provided that the source used to create the interference has a broad enough emittance to form a spectrum.

interferogram

A photographic or electronic recording of an optical interference pattern.

interferography

The method by which interferograms are produced.

interferometer

An interferometer is a scientific instrument that utilizes the principle of interference to measure differences in the path length, wavelength, phase, or amplitude of coherent electromagnetic waves....

interferometric calorimetry

Heat measurement method in which the sample is made part of the interferometer and the temperature increase is determined by measuring the change in optical pathlength through the material. By moving...

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