期刊
OPTICS AND LASERS IN ENGINEERING
卷 50, 期 6, 页码 900-904出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2011.12.004
关键词
Laser applications; Photolithography; Blu-ray
类别
We present a novel, cost-effective laser lithography system capable of producing periodic and non-periodic patterns with sub-micrometre feature sizes and periodicities. The optical head assembly of a Blu-ray disc recorder containing a 405 nm semiconductor diode laser and 0.85 NA objective lens was mounted on a motion stage and it was used to expose silicon samples covered with a mixture of SU-8 photoresist and photoinitiating chemicals. Experiments were carried out to demonstrate the lithographic capabilities of the system, and a smallest feature size of 450 nm was obtained. Grating structures were fabricated in order to demonstrate system capabilities. (C) 2012 Elsevier Ltd. All rights reserved.
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