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Proceedings Paper

Collimating and beam shaping system for BD optical pick-up
Author(s): Lihua Li; Longfa Pan; Jianshe Ma; Hua Hu; Yi Ni
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Paper Abstract

In Blu-ray Disc Optical Pick-up, the collimating and beam shaping play a significant role for laser beam process. So this paper firstly gives out a collimating and beam shaping system according to China manufacture situation. And then based on Laser Optics and Fourier Optics, this paper improves the calculation method of energy coupling efficiency for collimator lens. At last, it builds a simple Interference Instrument which is used for adjusting the collimator lens and beam shaper. This apparatus is built based on the theory of interference theory. The simplest example of an electromagnetic wave is the plane wave. The plane wave is produced by a monochromatic point source at infinity and is approximated by a collimated light source. Here the paper uses this Interference Instrument to assemble the collimator lens with laser diode and check the quality of the beam shaping. Meanwhile this collimating and beam shaping system can be produced easily in China, as it is suitable for Chinese optical element manufacture skill lever and can be precise assembled by using simple instruments. So it will make that producing BD OPU in China with a lower cost comes true.

Paper Details

Date Published: 21 November 2007
PDF: 5 pages
Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 68271A (21 November 2007); doi: 10.1117/12.753840
Show Author Affiliations
Lihua Li, Tsinghua Univ. (China)
Longfa Pan, Tsinghua Univ. (China)
Jianshe Ma, Tsinghua Univ. (China)
Hua Hu, Tsinghua Univ. (China)
Yi Ni, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 6827:
Quantum Optics, Optical Data Storage, and Advanced Microlithography
Chris A. Mack; Jinfeng Kang; Jun-en Yao; Guangcan Guo; Song-hao Liu; Osamu Hirota; Guofan Jin; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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