Temporary gratings on germanium
- 15 October 1974
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 25 (8) , 438-440
- https://doi.org/10.1063/1.1655539
Abstract
Diffraction gratings have been formed on the surface of germanium using two beams from a ruby laser inclined at an angle to each other. Grating spacings from 2 to 20 μm have been formed that appear to be present only during the illumination and no visible damage is observed. Subsequent illumination with a single beam produces no observable diffracted beams. Permanent gratings in damaged areas can be produced with more intense beams. The intensity of a diffracted order appears to depend on the product of the intensities of the incident beams. Several applications of the temporary grating are suggested.Keywords
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