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Title
Verfahren zur optischen Isolation einer Laserstrahlquelle und optischer Isolator, insbesondere zur Durchfuehrung des Verfahrens
Date Issued
2002
Author(s)
Palme, M.
Kiesling, H.
Patent No
1993-4326195
Abstract
The invention relates to a process for the optical isolation of a laser beam source and an optical isolator, in particular for the performance of this process. The process according to the invention is characterized by the fact that the laser beam is subjected to beam and energy splitting by diffraction and following diffraction, the energy level of a perturbing beam reflected backwards in the direction of the laser beam source is less than the energy level of the laser beam. For the impinging laser beam, the diffractive optical elements in the direction of the useful beam have a higher diffraction efficiency than for the feedback laser beam after being reflected in the direction of the diffractive optical element. Optical isolators preferably have a large number of diffractive grids in transmission or reflection.
Language
de
Patenprio
DE 1993-4326195 A1: 19930804