Photonics Dictionary: T

1. The anode or anticathode of an x-ray tube that emits x-rays when bombarded by electrons. 2. The screen in a television imaging tube that is scanned by an electron beam to determine the...

A device designed to enlarge the image of a microscopic object by television process. It may be a flying spot scanner that is used to scan the microscope slide, or a camera tube-microscope...

An electron tube that has an anode, a cathode, a control electrode and another electrode (usually a screen grid).

A diode electron tube that contains a heated cathode.

An arc discharge tube having a grid that is used to start the discharge through an atmosphere of inert gas or vapor at low pressure.

In a cathode-ray tube, the visible line or lines formed on the screen by the deflection of the electron stream.

Abbreviated TEA CO2 laser. A gas laser that provides shorter pulses and higher peak powers than conventional CO2 lasers. The electrical excitation pulse occurs transversely to the optical axis...

The distortion of an image formed by a cathode-ray tube, caused by unbalanced deflection voltages or deflection voltages that are not symmetrically aligned with the resultant anode potential.

A traveling wave tube (TWT) containing a photocathode and window that, receiving a laser beam, produces a modified photoelectric current that is accelerated and propagated into its helical frame.

In a color cathode-ray tube, a grouping of three color dots (red, blue and green) that represent one pixel in the final image.

An electron tube with an anode, a cathode and a regulating electrode (grid).