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PI Physik Instrumente - Microscope Stages HP ROS 11/24

8,726 terms

Photonics Dictionary

outer beam scale

The approximate dimension of the refractive-index correlation length in a given medium.

outgassing

The emission of gas or de-aeration due to thermal variations and often occurring in a vacuum. In a cleanroom, contamination from the spontaneous emission of absorbed particles.

output angle -> radiation angle

Half the vertex angle of the cone of light emitted by a fiber.

output coupler

The partially reflective mirror at the end of the laser cavity that is the source of the beam. It controls the coupling percentage for high output power and maintains correct mode structure in the...

output spectrum display

The direct computation of the Fourier transform of the space variant system output of an optical processor with a single spherical lens. The one-dimensional output spectrum appears along a 45°...

outside vapor deposition -> outside vapor-phase oxidation

A process for the production of optical fibers. A glass bait is rotated in a traversing flame of a reaction burner. Reactants passed through the flame react with oxygen at the high temperatures to...

outside vapor-phase oxidation

A process for the production of optical fibers. A glass bait is rotated in a traversing flame of a reaction burner. Reactants passed through the flame react with oxygen at the high temperatures to...

OVD

outside vapor deposition

overall distance

The physical distance, measured along the optical axis, from the object to the image. Also called overall length.

overcoat

A layer of material applied to a coated surface to protect it from physical or chemical action.

overexposure

The improper exposure of a radiation-sensitive medium that results when there is too much radiation exposing the medium, or when the exposure time is too long. The resulting image, in negative form,...

overfill

The condition of the numerical aperture or beam diameter of the laser, LED, or other optical source being larger than the optical fiber core or other driven source. Also called overfilled launch...

overhead projector

A projector used to project transparencies. A horizontal 8 x 10-in. stage for writing or laying down preformed transparencies is provided with either an elliptical mirror or a plastic Fresnel lens...

overillumination

A hologram facet illumination technique in which the illuminating beam is twice the size of the hologram facet so that full hologram resolution capability can be realized and scanning dead time is...

overscanning

In a cathode-ray tube, the deflection of the beam of the tube over an angle that surpasses the angle that subtends the suitable area of the screen.

OVPO

outside vapor phase oxidation

OXC

optical cross connect

oximeter

A device that uses a photoelectric cell to determine the level of oxygenation in the blood.

oxytosis

Oxytosis refers to a form of cell death that is induced by oxidative stress. It is characterized by the overproduction of reactive oxygen species (ROS) within cells, leading to oxidative damage and...

peta-; poise

pico-

P-type conductivity

In a semiconductor, the state created by the addition of a dopant that creates excess holes.

P-type material

A semiconductor material in which the dopants create holes as the majority charge carrier. It is formed by doping with acceptor atoms.

Pascal

power amplifier

picoampere

PABX

private automatic branch exchange

PAC

paraxial/axial color

packet

The finite amount of electrical charge generated in response to incident radiation and transferred from one storage element to the next in a charge-coupled device. Each packet corresponds to a pixel...

packet switching

The transmission of data in groups (packets) of information~comma~ each handled as an aggregate.

packing density

1. In a photonic interconnect, the number of detectors in a given area. Detectors spaced too closely may give rise to crosstalk. 2. In the cross section of a fiber optic bundle, the ratio of fiber...

packing fraction

The ratio of the active core area of a fiber bundle to the total area at its light-emitting or receiving end.

PACS

picture archiving and communications system

PAI

photoacoustic imaging

pair production

The production of a positron-electron pair by a photon having energy greater than one mega-electron-volt, whereby some of the photon energy is converted to the rest mass of the pair.

pairing

In interlaced television scanning, an effect in which the lines of one field fail to fall exactly within the lines of the following field, both fields comprising one frame of the picture. The lines...

PAL

phase alternation line

PAM

pulse amplitude modulation

PAMA

pulse address multiple access

panchromatic photographic film

Black and white film that has a wavelength sensitivity similar to that of the eye.

panchromatic sensitivity

Color sensitivity extended to cover the entire visible spectrum out to the red.

panoramic camera

A camera designed to form a continuous record of an expansive section of the horizon. The typical panoramic camera is mounted to rotate about a vertical axis. A slit opening in the film plane and the...

panoramic distortion

The image distortion produced by a panoramic camera with a swinging lens or a swinging mirror in front of a fixed lens. The magnification is greatest in the center and diminishes to each side in the...

panoramic lens

A lens system that is capable of producing a 360° image, or one that is very close to that. In recording, the image may be formed on a curved strip of film surrounding the lens, resulting in a...

panoramic telescope

A telescope so manufactured that the image remains erect and the position of the eyepiece is unchanged as the line of sight is pointed in any horizontal direction.

PAR

photosynthetically active radiation

parabolic mirror -> paraboloidal mirror

A concave mirror that has the form of a paraboloid of revolution. The paraboloidal mirror may have only a portion of a paraboloidal surface through which the axis does not pass, and is known as an...

parabolic profile

The condition in which the index of refraction in an optical fiber varies as a parabolic function of the radius.

paraboloidal condenser

A condenser composed of a paraboloidal reflector and used for dark-field illumination.

paraboloidal mirror

A concave mirror that has the form of a paraboloid of revolution. The paraboloidal mirror may have only a portion of a paraboloidal surface through which the axis does not pass, and is known as an...

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Photonics Dictionary

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