Bristol Instruments, Inc. - 872 Series LWM 10/24 LB

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Meadowlark Optics - Wave Plates 6/24 MR 2024

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8,726 terms

Photonics Dictionary

xenon arc photocoagulator

An instrument for eye surgery that directs intense xenon arc light through the transparent cornea lens to the retina where absorption by the pigment epithelium and the choroid produces heat and...

xenon flashtube

A high-intensity source of incoherent white light in which a capacitor is discharged through a tube of xenon gas; often used as a source of pumping radiation for various optically excited lasers.

xerography

A printing process of electrostatic electrophotography that uses a photoconductive insulating medium, in conjunction with infrared, visible or ultraviolet radiation, to produce latent...

xeroradiography

A printing process of electrostatic electrophotography that uses a photoconductive insulating medium, in conjunction with x-rays or gamma rays, to produce latent electrostatic-charge patterns for...

XES

x-ray energy spectroscopy

XLPE

irradiated cross-linked polyolefin

XMM

x-ray multimirror

XMOD

external modulator

XMTR

transmitter

crystal oscillator

XRFS

x-ray fluorescent spectrometer

XRL

x-ray laser

XRPM

x-ray projection microscope

crosstalk

XUV

extreme ultraviolet

XY recorder

A recorder that plots, on a chart, the interaction between two variables, not directly representing time.

xylene

Fluid used to aid in examination of semifinished blanks.

XYZ axes

Conventional coordinates for optical system analysis, the X-axis being the horizontal, the Y-axis the vertical and the Z-axis the optical axis of the system.

yocto

yotta

Y axis

1. In a plane Cartesian coordinate system, the vertical axis orthogonal to the X-axis. 2. In a quartz crystal structure, the line perpendicular to two opposite parallel faces of the crystal.

Y-axis deflection

The vertical deflection of an image on a cathode-ray tube screen.

YAG

yttrium aluminum garnet

YAG crystal

A YAG crystal refers to a solid-state crystal made of yttrium aluminum garnet (YAG), which is a synthetic crystalline material. YAG crystals are known for their exceptional optical properties,...

YAG laser

A solid-state laser using yttrium aluminum garnet as the matrix material, doped with neodymium (Nd:YAG).

YALO

yttrium orthoaluminate

yaw

In positioning, in-plane rotation about the vertical axis. Also known as azimuth.

YLF

yttrium lanthanum fluoride

yocto

In the SI system, prefix meaning 10-24. (y).

yotta

In the SI system, prefix meaning 1024. (Y).

Young's construction

A method of graphical ray tracing through a boundary surface dividing two media of differing indices of refraction.

Young's modulus

The constant equal to the unit stress divided by unit deformation, relative to all values and a substance's proportional restrictions.

Young's two-slit interference

The method by which Thomas Young in 1802 disproved Newton's corpuscular theory of light by the formation of interference patterns between two beams of light from the same source. This was produced by...

year

ytterbium laser

A ytterbium laser is a type of solid-state laser that employs ytterbium ions (Yb³+) as the dopant in the gain medium. These lasers are known for their high efficiency, broad absorption and...

zeta

atomic number; zepto-

Z-axis modulation

The intensity regulation of a cathode-ray tube by alteration of the grid-cathode voltage.

Z-scan

A technique for determining the nonlinear optical properties of a sample material by moving the sample through a focused laser beam and measuring changes in the beam's characteristics, such as...

Zeeman broadening

Broadening of a spectrum that results from the influence of a magnetic field.

Zeeman effect

The splitting of energy levels of an atom, ion or molecule because of a magnetic field.

Zener diode

A type of semiconductor diode used in voltage-limiting circuits; when voltage reaches a certain value, the device becomes a conductor.

ZENITH

zero-energy nitrogen heated thermal reactor

zenith telescope

A telescope that is fixed or has a limited degree of movement in a vertical plane; primarily used to determine the position of stars near the zenith.

zepto

In the SI system, prefix meaning 10-21. (z).

Zernike's phase contrast method

The introduction of a filter into an imaging system to implement a phase contrast for an intensity mapping of a pure phase image.

zero halogen thermoplastic

A highly flame-retardant material used to jacket fiber optic cables, especially on shipboard applications.

zero order

In an interference pattern, that point where there is no difference between the optical paths of the interfacing wavefronts.

zero phase shift mirror

A mirror that supplies equal reflectance for both the S-polarization and the P-polarization of a laser for a defined angle of incidence, usually 45°.

zero-dispersion wavelength

In a single-mode optical fiber, the wavelength that causes material dispersion and waveguide dispersion to cancel each other. In a multimode fiber, loose term for the wavelength at which there is a...

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