Optical-pumping
noun, Physics, Optics.
1.
a method for increasing the number of atoms or molecules occupying higher energy levels by irradiating them with light of the proper frequencies to raise them to those levels.
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noun 1. See pyrometer
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optical resonator A part of a laser, consisting of two mirrors, one highly reflective and one partly reflective, placed on either side of a laser pump. Amplified light bounces back and forth between the mirrors, enhancing stimulated emission within the pump, eventually being emitted through the partly reflective mirror. See more at laser.
- Optical-rotation
noun, Physical Chemistry. 1. the angle at which the plane of polarized light is rotated when passed through an optically active substance. noun 1. the angle through which plane-polarized light is rotated in its passage through a substance exhibiting optical activity optical rotation n. The change or rotation in the plane of polarization that occurs […]
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noun 1. the process of interpreting data in printed, handwritten, bar-code, or other visual form by a device (optical scanner or reader) that scans and identifies the data.
- Optical-sound
noun, Movies. 1. sound recorded on and subsequently played back from an optical or photographic soundtrack, as opposed to a magnetic soundtrack. noun 1. sound recorded in the form of a photographic image on cinematograph films