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Proceedings Paper

Direct, Maskless Fabrication Of Submicrometer Gratings On Semiconductors
Author(s): Dragan V. Podlesnik; Heinz H. Gilgen; Richard M. Osgood Jr.
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Paper Abstract

Ultrahigh-resolution gratings are produced in GaAs crystals by using two interfering beams to initiate localized chemical reactions at the solid/liquid interface. Optical gratings with periods between 0.1 and 1 }im are produced with controllable and reproducible optical properties. This maskless technique has potential applications in the fabrication of distributed feedback lasers. Futhermore, a variety of groove profiles are made under different etching conditions. A novel aspect of the direct processing is that the grating growth can be monitored in real time by observing the diffraction of the writing beams, thus allowing a precise control over the grating depth and groove profiles. In addition, because the gratings have a very high resolution, the process of grating fabrication becomes a method of studying the micrometer-scale physical processes which influence the grating structure and growth.

Paper Details

Date Published: 10 May 1986
PDF: 8 pages
Proc. SPIE 0560, Diffraction Phenomena in Optical Engineering Applications, (10 May 1986); doi: 10.1117/12.949618
Show Author Affiliations
Dragan V. Podlesnik, Columbia University (United States)
Heinz H. Gilgen, Columbia University (United States)
Richard M. Osgood Jr., Columbia University (United States)

Published in SPIE Proceedings Vol. 0560:
Diffraction Phenomena in Optical Engineering Applications
Dale M. Byrne; James E. Harvey, Editor(s)

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