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US 5,627,672 AGranted
Controllable optical periodic surface filters as a Q-switch in a resonant cavity
AssigneeTexas Instruments Incorporated
InventorsCharles M. Rhoads, Gary Frazier, Richard G. Hoffman, II, Oren B. Kesler, Daniel J. Ryan
Life of this patent
Estimating the term…
Abstract
Generally and in one form of the invention this is a periodic surface filter comprising at least one element at a surface of the filter and electronic controls to change the optical characteristics of the element. The surface filter is used as a switchable filter in a cavity for a Q-switch.
Claims8
A Q-switch comprising:
- a. a substrate;
- and
- b. a surface filter on said substrate, wherein said surface filter is a switchable mirror for a cavity such that said surface filter is switched rapidly by exposure to a pulse of light at a wavelength to generate photoconductive electrons.
A Q-switch comprising:
- a. a substrate;
- and
- b. a surface filter on said substrate, wherein said surface filter is a switchable mirror for a cavity such that said surface filter is switched rapidly by electronic control.
Dependencies are inferred from the claim text.