An aspheric lens is a type of lens whose surface profiles deviate from the traditional spherical shape. Unlike spherical lenses, which have a constant curvature across their surfaces, aspheric lenses feature varying curvatures, allowing for improved...

A test chart whose luminance changes uniformly in one direction according to a sinusoidal rule. These charts carry groups of...

Also known as a white-light interferometer. Measures surface texture and shape from nanometer-scale roughness to...

A metabolite is any small molecule that is a product of metabolism, the chemical processes that occur within living...

The use of a small ultrastable master oscillator (a diode-pumped Nd:YAG laser) to achieve single-frequency operation of a...

Acronym for profile resolution obtained by excitation. In its simplest form, probe involves the overlap of two...

In laser welding or heat treating, the instantaneous laser beam power per unit area. This parameter is key in determining...

A holographic grating is a type of diffraction grating that is produced using holographic recording techniques. It consists...

Beam profiling is a technique used to characterize and analyze the spatial intensity distribution of a laser beam. It...

In microscopy, the measured distance between theoretical parallel lines that are drawn tangent to the particle profile and...

In infrared imaging systems used for mass screening of printed circuit boards or other quality control applications, an...

Scattering (other than material scattering) that is attributable to variations of geometry and index profile of the...

A laser diode module is a compact device that incorporates a laser diode, optics, and often other components into a single...

The method used to measure the index profile of an optical fiber by placing it in an interferometer and illuminating the...

A biomarker, short for biological marker, refers to a measurable and quantifiable indicator of a biological condition,...

The technique for measuring the index profile of an optical fiber by scanning the entrance face with the vertex of a high...

A measurement technique used to determine the spatial distribution profile of an electrical or optical quantity of interest...

The term gradient-index profile refers to a specific type of refractive index distribution within an optical material. In...

A device that measures the spatial distribution of energy perpendicular to the propagation path of a radiant beam. An energy...

A variation in propagation delay caused by differences in group velocity among modes of an optical fiber. Also called...

Lens testing equipment refers to a range of specialized tools and instruments used to evaluate the optical performance,...

Modified chemical vapor deposition (MCVD) is a technique used in the fabrication of optical fibers. It is a specialized form...

In the context of optics and lasers, a transverse mode refers to a specific spatial pattern of the electric field within the...

Blaze height typically refers to a parameter in the context of diffraction gratings, which are optical devices consisting of...

The description of the refractive index along a fiber diameter.

The method for measuring the index profile of an optical fiber or preform by illuminating it coherently and transversely to...

A laser diode with an output beam contained in the active layer by means of a built-in refractive index profile formed in...

Phase matching is a crucial concept in the field of optics, particularly in nonlinear optics and the generation of coherent...

A slab-shaped, very low profile package for electronic components; often used when printed circuit boards must be closely...

Fizeau fringes are interference fringes observed in an interferometer, specifically in a Fizeau interferometer. The Fizeau...

The roughness profile shape from which light scattering is expected to occur.

In an optical waveguide, that dispersion attributable to the variation of refractive index profile with wavelength. The...

An inspection device in which the profile of a mechanical part is projected onto a ground-glass screen at a precisely known...

Loss intrinsic to the fiber caused by parameter (core dimension, profile parameter) mismatches when two nonidentical fibers...

The dip or gap in the profile of a laser beam's line width when it is both homogeneously and inhomogeneously broadened. When...

In optics and photolithography, a phase mask refers to a device that modifies the phase of light waves passing through it....

In gradient index optics, a gradient profile in which the refractive index varies along the direction of light propagation,...

A laser diode in which the beam is confined to the region of the active layer with gain high enough to accomplish such...

In fiber optics, the use of a detector to study the range of refractive indices achieved at various wavelengths. This...

A 2D profile sensor is a type of sensor used in various industrial and technological applications to measure and capture...

A profile of an optical component, usually a fiber, in which the core is of uniform refractive index and the cladding or...

A method for measuring the index profile of an optical fiber by measuring the reflectance as a function of position on the...

In an optical waveguide, the refractive index as a function of radius.

A metalens, short for "metasurface lens," is a type of optical lens that uses nanostructured materials to manipulate light...

Measurement of absorption by the gas of interest in the 2- to 6-µm range as a function of tangent height pressure. The...

The decrease in the refractive index at the center of a fiber's core, caused by certain fabrication techniques. Also called...

Freeform mirrors refer to reflective optical components that deviate from traditional symmetric or rotationally symmetric...

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

An aspheric mirror is an optical mirror surface that deviates from the shape of a perfect sphere, having a non-spherical...

An intensity distribution (intensity as a function of radial distance from the beam center) which is given by the Gaussian...

A beam shaper is an optical device or system designed to modify the spatial profile or intensity distribution of a laser or...

The method for measuring the index profile of an optical fiber by preparing a thin sample that has its faces perpendicular...

In optics, a motion controller refers to a device or system that precisely controls the movement of optical components, such...

A fiber optic preform is a cylindrical glass rod or tube used as the starting material for manufacturing optical fibers. It...

Derived from "self-focusing,'' Nippon Sheet Glass Co. (NSG) of Japan's trade name for graded-index fiber rods with parabolic...

Mode hopping in the context of lasers refers to a phenomenon where a laser system abruptly switches from one longitudinal...

Characteristic of an acousto-optic modulator, defined by the overlap integral of the incident light and sound field...

A thermal infrared imaging procedure developed for quality control of printed circuit boards. The thermogram of each board...

Laser optics refers to a broad category of optical components and systems designed for manipulating and controlling laser...

Measures the refractive indices axially from the fiber profile. Microscopy technique provides an interferogram with high...

A representation of the shape of a surface, including any roughness or other irregularities. The profile can be generated by...

In gradient index optics, a gradient profile in which the refractive index varies symmetrically about a point.

Metasurfaces are two-dimensional arrays of subwavelength-scale artificial structures, often referred to as meta-atoms or...

A 3D profile sensor, also known as a 3D profiling sensor or 3D depth sensor, is a technology that is used to capture and...

In gradient index optics, a gradient profile in which the index varies in a direction perpendicular to the optical axis....