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Proceedings Paper

Etching quartz with inductively coupled plasma etching equipment
Author(s): Xuming Wu; Changhe Zhou; Peng Xi; Enwen Dai; Huayi Ru; Liren Liu
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Paper Abstract

Inductively Coupled Plasma (ICP)can achieve high density plasma in low pressure,so it has a number of significant advantages such as improved etching rates,better profile control,improved uniformity, greatly increased selectivity and a dramatic reduction in radiation damage and contamination. In optics,quartz is an ideal optical material with transmitting spectral range from deep ultraviolet to far infrared.So we systematically studied the etching characteristics of quartz by using a Inductively Coupled Plasma (ICP)etching system.In the xperim nts,the gas was the mixture of CHF3,O2 and Ar,and the chamber pressure was about 10 mTorr.Th influences of gas flow rate and the power of the radio frequency on etching rate were optimized. The uniformity and repeatability of the etching technology were also studied. After residue mask material was removed by wet chemical solution, no polymer was observed on the surfaces of samples,and the surfaces of the fabricated quartz elements were smooth and clean. The optimized etching process is important for the fabrication of micro-optical lements based on quartz. Using this etching process, many gratings such as Dammann grating, rectangular groove grating, and optical disk grating can be fabricated successfully.

Paper Details

Date Published: 3 November 2003
PDF: 7 pages
Proc. SPIE 5183, Lithographic and Micromachining Techniques for Optical Component Fabrication II, (3 November 2003); doi: 10.1117/12.504001
Show Author Affiliations
Xuming Wu, Shanghai Institute of Optics and Fine Mechanics (China)
Changhe Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Peng Xi, Shanghai Institute of Optics and Fine Mechanics (China)
Enwen Dai, Shanghai Institute of Optics and Fine Mechanics (China)
Huayi Ru, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 5183:
Lithographic and Micromachining Techniques for Optical Component Fabrication II
Ernst-Bernhard Kley; Hans Peter Herzig, Editor(s)

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