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7 terms
Photonics Dictionary: B
Clear All Filters x
cell x
B x
back-wall photovoltaic cell
A photovoltaic cell designed so that light travels through the front electrode and a semiconductor before it comes to the barrier layer.
Bragg cell
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acousto-optic modulator
A device that varies the amplitude and phase of a light beam; e.g., from a laser or by sound waves. Also known as a Bragg cell.
bandgap
In semiconductor physics, the term bandgap refers to the energy range in a material where no electronic states are allowed. It represents the energy difference between the valence band, which is the...
biomarker
A biomarker, short for biological marker, refers to a measurable and quantifiable indicator of a biological condition, process, or response. Biomarkers can be substances or characteristics that are...
brightfield
Brightfield refers to a type of microscopy and imaging technique in which the specimen is illuminated with a white light source, and the image is observed or captured against a bright background. In...
brightness meter
An instrument for measuring the brightness (luminance) of a scene. It may be a spot meter, covering an area of a degree or less, or an averaging meter, covering a broad area of the scene. Brightness...
burnishing
The process of lapping a thin edge of metal over the bevelled edge of a lens to maintain it within its cell.
Photonics Dictionary
B
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