Photonics Dictionary: D

The formation of a dark-colored film on a metal surface by chemical activity.

Deep ultraviolet (DUV or deep-UV) refers to a specific range of ultraviolet light with shorter wavelengths than those in the UV-A and UV-B regions. The exact wavelength range considered as DUV can...

A critical image parameter in applications where object position may change dynamically relative to the imager; this is a sensitive function of the system's preclosed loop (initial) focal range and...

A chemical solution that changes the silver salts (latent image) of exposed photographic film into black metallic silver (visual image).

A very hard, highly transparent coating based on forms of carbon, used to protect optical components from abrasion and chemical damage.

A waveguide made up of a dielectric material, such as plastic or mica, in a cylindrical form, through which the waves travel.

Diffuse reflectance spectroscopy (DRS) is a nondestructive analytical technique used to investigate the optical properties of materials, particularly in the field of spectroscopy. Unlike traditional...

Also called DLIP, a high-speed, high-resolution processing technique that uses high-power, pulsed laser systems to directly ablate micro- and nanoperiodic structures with different features on large...

An astronomical scanning technique for capturing images of stars without moving the sensor. To perform a drift scan, a CCD sensor's readout rate must be synchronized with the motion of celestial...