Mirror with thermally controlled radius of curvature
A radius of curvature controlled mirror for controlling precisely the focal point of a laser beam or other light beam. The radius of curvature controlled mirror provides nearly spherical distortion of the mirror in response to differential expansion between the front and rear surfaces of the mirror. The radius of curvature controlled mirror compensates for changes in other optical components due to heating or other physical changes. The radius of curvature controlled mirror includes an arrangement for adjusting the temperature of the front surface and separately adjusting the temperature of the rear surface to control the radius of curvature. The temperature adjustment arrangements can include cooling channels within the mirror body or convection of a gas upon the surface of the mirror. A control system controls the differential expansion between the front and rear surfaces to achieve the desired radius of curvature.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-85ER40150
- Assignee:
- Jefferson Science Associates (Newport News, VA)
- Patent Number(s):
- 7,740,362
- Application Number:
- 12/070,522
- OSTI ID:
- 1176375
- Resource Relation:
- Patent File Date: 2008 Feb 19
- Country of Publication:
- United States
- Language:
- English
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