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Opto Diode Corp. - PbS &PbSe Detectors 10-24 HP

8,726 terms

Photonics Dictionary

Schmidt correction plate -> Schmidt plate

An aspheric plate placed at, or near, the center of curvature of a spherical reflector and used to correct for spherical aberration.

Schmidt plate

An aspheric plate placed at, or near, the center of curvature of a spherical reflector and used to correct for spherical aberration.

Schmidt prism

A prism that inverts and reverts an image while deviating the line of sight by a 45° angle.

Schmitt trigger

Oscilloscope electronic circuit that produces an output pulse whose pulse width is determined by the time that the output voltage exceeds a specified level.

Schottky diode

A Schottky diode is a type of semiconductor diode characterized by its low forward voltage drop and fast switching speed. It is formed by the junction of a metal and an n-type semiconductor, creating...

Schottky-barrier IRCCD

A form of infrared CCD that utilizes internal photoemission as a photodetection mechanism.

Schrödinger's cat

Schrödinger's cat is a thought experiment devised by the physicist Erwin Schrödinger in 1935 to illustrate the paradoxical nature of quantum mechanics, particularly the concept of...

Schumann plate

A specific type of photographic plate designed with only a small amount of gelatin to function in the extreme ultraviolet and in positive-ray analysis.

scientific CMOS camera

A scientific CMOS (complementary metal-oxide-semiconductor) camera is a type of digital camera specifically designed for scientific imaging applications. It employs CMOS sensor technology, which...

scientific complementary metal-oxide semiconductor

Scientific complementary metal-oxide semiconductor (sCMOS) refers to a type of image sensor technology specifically designed for scientific and industrial imaging applications. Unlike traditional...

scintillation

1. The variation in intensity of a light beam as it travels through the atmosphere. 2. In radiation physics, a light flash formed by an ionizing event in a phosphor; a flash formed when rapidly...

scintillation camera

A pinhole camera used to record a radioactive tracer's distribution in a subject by means of a scintillation counter or a fluorescent screen; used when a recording emulsion is not practical.

scintillation counter

An instrument designed to measure radiation indirectly through the use of several phosphors and a photomultiplier tube. The absorption of radiation by any phosphors results in light flashes that may...

scintillation crystal

A scintillation crystal, also known simply as a scintillator, is a material that emits light when it interacts with ionizing radiation such as gamma rays, x-rays, or charged particles. The emitted...

scintillation detector

A scintillation detector is a radiation detection device that utilizes scintillation crystals to detect and measure ionizing radiation, such as gamma rays, x-rays, or charged particles. It consists...

scintillation phosphor

A phosphor that has the ability to convert into light emission a portion of energy lost by ionization when a charged particle passes through the material.

scintillation spectrometry

The method of determining the energy distribution of high-speed charged particles by the luminous effect formed when the particles strike a material.

sclerometer

An instrument used to test the hardness of various materials. It measures the pressure on a standard point that is necessary to scratch the material.

SCM

scanning capacitance microscopy

sCMOS

scientific complementary metal-oxide semiconductor

SCN

satellite-control network

scopometer

A device used to take turbidimetric or nephelometric measurements by considering the contrast between a constant brightness field and an illuminated line positioned behind the solution being tested.

scoring

The cutting of pitch tooling surfaces by an optical technician to permit polishing compounds to flow across the surface of the tool.

scotopic vision

Vision by means of retinal rods; vision of the dark-adapted eye. In scotopic vision, the level of luminance is so low that the retinal cones are not stimulated, and there is no color vision.

scotoscope

An instrument that uses an image intensifier to aid in the viewing of subjects in low-light-level environments.

SCR

silicon controlled rectifier

scratch

A defect on a polished optical surface whose length is many times its width. Block reek is a chainlike scratch formed in polishing. A runner cut is a curved scratch caused by grinding. A sleek is a...

scratch resistant coating

Thin layers intended to prevent damage to plastic optics.

screen

The large, usually flat surface onto which an image is projected for viewing. May be reflecting or transmitting (rear projection).

scribing

The process of perforating a silicon or ceramic substrate with a series of tiny holes along which it will break. Nd:YAG or CO2 lasers are now routinely used.

scribing and engraving laser systems

Scribing and engraving laser systems are types of laser equipment used for precision cutting, marking, and engraving on various materials. Scribing laser systems: Definition: Scribing...

SCSI

small computer standard interface

SCT

Schmidt-Cassegrain telescope

SDD

silicon drift detector

SDFOV

simultaneous dual field of view

SDH

synchronous digital highway; synchronous digital hierarchy

SDI

Strategic Defense Initiative

SDIO

Strategic Defense Initiative Organization

SDK

software development/developer's kit

SDM

space division multiplex

SEA

surface-emitting array

sealed-off

Describing a laser in which the gas is permanently sealed within the tube.

sec

secant of

SEC

secondary emission conductor; short external cavity

SECAM

Systeme Electronique Pour Colour Avec Memorie

second principal point

The principal point of a lens relative to image space.

second-harmonic generation microscopy

A nonlinear label-free imaging technique commonly used during surgical procedures for the visualization of collagen fibers and muscle tissue (myosin) with submillimeter resolution. During the...

second-harmonic generation

Second-harmonic generation (SHG) is a nonlinear optical process that occurs when two photons with the same frequency combine within a nonlinear material, resulting in the generation of a new photon...

second-order nonlinear optical properties

Second-order nonlinear optical properties refer to a class of phenomena exhibited by certain materials in response to intense light, typically in the realm of optics and photonics. Nonlinear optical...

second-side meniscus

The process of grinding the convex surface of a convexo-concave meniscus.

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Photonics Dictionary

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