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Meadowlark Optics - Wave Plates 6/24 MR 2024

8,726 terms

Photonics Dictionary

knife-edge scanning microscope

An imaging device originally created to image whole mouse brain volumes at microscopic resolution. The main component of the instrument is an automated microtome and microscope capable of producing...

knife-edge test -> Foucault knife-edge test

The Foucault test is performed by moving a knife edge laterally into the image of a small point source. The eye, or a camera, is placed immediately behind the knife edge, and the exit pupil of the...

Knoop hardness

A measurement of the hardness of a material as determined by the penetration depth of a diamond stylus under a specified amount of pressure.

Koehler illumination

A two-stage illuminating system for a microscope in which the source is imaged in the aperture of the substage condenser by an auxiliary condenser, and the substage condenser in turn forms an image...

Koenig-Martens spectrophotometer

A visual, single-unit spectrophotometer with a biprism and a Wollaston prism. The Wollaston prism polarizes coincident images of the two halves of the entrance aperture.

Kovar

Westinghouse trade name for an alloy of iron, nickel and cobalt, which has the same thermal expansion as glass and therefore is often used for glass-to-metal or ceramic-to-metal seals.

kpsi

thousand pounds per square inch

Kramers-Kronig relation

Analysis of the reflection spectrum that allows the determination of the experimental dielectric function.

kron camera

Astronomical detector consisting of a photocathode isolated from the target by a coin value from which electrons are focused on a nuclear emission, producing tracks on the emission. Track density can...

krypton lamp

An arc lamp that has its cavity filled with krypton to produce a light source with unique characteristics.

KTP

potassium titanyl phosphate

Kubelka-Munk theory

A two-flux theory in which the radiation is assumed to be composed of two oppositely directed radiation fluxes through a continuous medium. The theory has been widely used to relate the total diffuse...

Kundt effect -> Faraday effect

The Faraday effect, named after the English scientist Michael Faraday, is a phenomenon in physics where the polarization plane of light is rotated when the light passes through a transparent medium...

kilovolt

kVA

kilovoltampere

kVDC

kilovolt direct current

kilowatt

kWh

kilowatt-hour

Kynar

Pennwalt's trade name for polyvinylidene fluoride, a material used in the jacket of fiber optic cables where low smoke emission is deemed more important than flexibility.

liter; lambert

L-band

long band

l/mm

lines per millimeter

laser gyro axis

lab-on-a-chip

A lab-on-a-chip (LOC) is a miniaturized device that integrates various laboratory functions and capabilities onto a single, compact chip. Also known as microfluidic devices, lab-on-a-chip systems are...

label-free

Label-free refers to a technique or method that does not require the use of additional labels, tags, or markers to detect or identify specific components or entities. In various scientific and...

laboratory instruments and supplies

Optical laboratory instruments and supplies are essential tools and materials used in laboratories for studying and manipulating light and its properties. These instruments are widely used in...

ladar

laser detection and ranging

ladar -> lidar

light detection and ranging

ladder diagram

A diagram that shows actual component signals and the basic wiring configuration of a relay logic circuit.

LAE

large-area electronics

LAEDP

large-area electronic display panel

lag

A term applied to an electric charge image in a camera tube that remains for a period of a few frames after its initial formation.

LAGEOS

laser geodynamic satellite

lambda services

Term for service offered by a vendor who leases a particular wavelength to a customer through DWDM technology. Lambda services are often associated with the leasing of dark fiber.

Lambert's absorption law

Transmittance of a solution, or internal transmittance of a transparent solid, is an exponential function of the thickness of the layer.

Lambert's cosine law

Flux per unit solid angle leaving a surface in any direction is proportional to the cosine of the angle between that direction and the normal to the surface. A material that obeys Lambert's cosine...

lambert

A unit of luminance equal to 1/p candela per square centimeter. (l).

lambertian

Obeying Lambert's cosine law.

lambertian emitter

An optical source that has a luminous distribution that is uniform for all directions.

lambertian source plane

In optics, a plane that emits a flux proportional to the cosine of the angle of the normal; dense opal glass is an example.

lambertian surface

A perfectly diffusing surface; the intensity of the light emanating in a given direction from any small surface component is proportional to the cosine of the angle of the normal to the surface. The...

lamellar grating

A grating with ridges of rectangular cross section, generally equal in width to the space between. This type of grating may be used as a beam divider.

laminated

Composed of layers.

LAMMA

laser micromass analysis

LAMMS

laser microprobe mass spectrometry

lamp -> light source

The generic term applied to all sources of visible radiation from burning matter to ionized vapors and lasers, regardless of the degree of excitation.

lamp housing

A device designed to concentrate and direct a light source by enclosing the source in it and using a concave reflector to direct the light through its only opening.

LAN

local area network

land

In a CD-ROM disc, the reflective area between nonreflective pits representing a binary-language "off'' as opposed to the "on'' signals of the land-to-pit and pit-to-land transitions.

landolt band

A dark band that may appear in the field of crossed Nicol prisms with a powerful source such as the sun because the light is not strictly parallel and is not extinguished immediately.

Photonics Dictionary

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