The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 1986
Filed:
Feb. 06, 1985
Eckhard Storck, Munich, DE;
Ulrich Wolff, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A Bragg cell spectral analyzer with a prism expansion system for a laser beam, which has a Gaussian cross-sectional distribution of light intensity, is generally superimposed with stray light, and is conducted along a path through the system to a Bragg cell characterized by an aperture diaphragm being positioned in the path before the prism expansion system with the diameter of the aperture being selected to be larger than the half-width value of the Gaussian cross-sectional distribution. The prism expansion system only expands the laser beam to such a degree that the half-width value of the Gaussian cross-sectional distribution is smaller than the diameter of an aperture of the Bragg cell. As a result thereof, the diffraction side lobes of the spectrum can be reduced by apodization relative to the principal maximum of the spectrum and stray light contained in the laser beam can be blanked out.