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| Abstract |
A technique for fabricating tapered-surface structures on GaAs crystals is demonstrated. GaAs crystals are bombarded with low-energy (5 keV) Ar^+ ions, and the partially masked surfaces are etched wit...h an aqueous solution of FeCl_3—HCl. Effect of the ion bombardmentenhanced etching is utilized to proceed a high-rate lateral etching under the mask, and to reveal a surface with a taper angle of 10-45°, depending on the ion dose.show more
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