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23 terms
Photonics Dictionary
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axicon
An axicon is a type of optical component characterized by its conical shape and its ability to transform a collimated Gaussian beam of light into a ring-shaped beam with a gradually increasing...
erbium-doped fiber amplifier
An optical fiber that can be used to amplify an optical input. Erbium rare earth ions are added to the fiber core material as a dopant in typical levels of a few hundred parts per million. The fiber...
laser drill
High power laser ablation device that by pulsed operation produces holes of controllable dimension on the scale of microns. Laser drill applications include turbine manufacturing and surface metal...
laser lithotripter
A laser device intended for crushing urinary tract stones so they can be flushed from the body. Light is introduced via fiber optic delivery. A common wavelength used is 2.1 microns produced by...
laser medium
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lasing medium
The material that produces stimulated emission from within a laser oscillator. Laser gain media may vary from extended-length glass fibers to submicron-length semiconductor material.
lasing medium
The material that produces stimulated emission from within a laser oscillator. Laser gain media may vary from extended-length glass fibers to submicron-length semiconductor material.
µm
micron (also referred to as the micrometer)- which represents one millionth, i.e. 10-6 of the SI unit for length that is the meter.
magnetorheological finishing
Magnetorheological finishing (MRF) is a precision optics polishing technique used for shaping and finishing optical surfaces to achieve extremely high levels of smoothness and accuracy. It is...
magnetorheological
Magnetorheological (MR) materials, often referred to as MR fluids, are smart materials that undergo significant changes in their rheological behavior (flow and deformation characteristics) in the...
MEMS
->
microelectromechanical systems
Refers to micron-size complex machines that have physical dimensions suitable for the fabrication of optical switches for use in state-of-the-art communications networks.
microbending
In optical fiber, sharp but microscopic curvatures that create local axial displacements of a few microns and spatial wavelength displacements of a few millimeters. One frequent cause is longitudinal...
microelectromechanical systems
Refers to micron-size complex machines that have physical dimensions suitable for the fabrication of optical switches for use in state-of-the-art communications networks.
microlithography
A technique for producing micron-size structures on surfaces by using short-wavelength light or electron beams.
micrometer
1. The SI unit of length equal to 10-6 m. Also called micron. 2. A screw thread device used to make accurate physical linear measurements.
micron (µm)
A unit of length in the metric system equal to one millionth of a meter (10-6 m). Also called micrometer. Abbreviated µm.
millimicron
Former name of the nanometer, 10-9 m.
nanometer
A unit of length in the metric system equal to 10-9 meters. It formerly was called a millimicron.
optical caliper
A device for measuring linear dimensions. The optical caliper generally consists of two circularly mounted mirrors whose angular positions are monitored by an autocollimator, and that are capable of...
optical manufacturing tools and machinery
Optical manufacturing tools and machinery encompass a wide range of equipment, instruments, and systems used in the fabrication, shaping, finishing, and testing of optical components and systems....
particle image velocimetry
A whole-flow-field technique providing instantaneous velocity vector measurements in a cross-section of a flow that is seeded with micron-sized particles. CCD or CMOS cameras and laser light sheets...
piezo worm
A piezoelectric translator that moves up and down a spindle like a caterpillar. It clamps itself at one end, expands, clamps the other end, releases the first end, and then contracts and begins the...
solid-state linear motor
->
piezo worm
A piezoelectric translator that moves up and down a spindle like a caterpillar. It clamps itself at one end, expands, clamps the other end, releases the first end, and then contracts and begins the...
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.
Photonics Dictionary
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