Holographic Laser Module with Dual Wavelength for Digital Versatile Disc Optical Heads
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概要
- 論文の詳細を見る
Backward compatibility with CD-R necessitates having two laser sources in the digital versatile disc (DVD) pickup head. The dual-wavelength optical head complicates pickup design and enlarges the volume of the head. Moreover, it increases the number of components and assembly cost. In this paper, we present a new design for a dual-wavelength holographic pickup-head module. Packaged together in the module are two laser diodes, photodiodes and a holographic optical element (HOE) for diffracting reflected light from the disk onto the corresponding photodetectors. This module can be used as the core of an optical head capable of reading DVD, CD and CD-R.
- 社団法人応用物理学会の論文
- 1999-03-30
著者
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Yau H‐f
National Central Univ. Chung‐li Twn
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Yau Hon-fai
Institute Of Optical Sciences National Central University
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Yau Hon-fai
Institute Of Optical Science National Central University
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Yang Tzu-ping
Opto-electronics & Systems Laboratories Industrial Technology Research Institute
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Huang Der-ray
Opto-electronics & Systems Laboratories Industrial Technology Research Institute
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Huang Der-ray
Opto-electronics & Systems Labs. Industrial Technology Research Institute
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Huang Der-ray
Opto-electronics & Systems Lab. Itri
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Wang Jen-kwang
Opto-electronics & Systems Labs. Industrial Technology Research Institute
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Freeman Mark
Opto-electronics & Systems Labs. Industrial Technology Research Institute
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SHIH Hsi-Fu
Opto-Electronics & Systems Laboratories, Industrial Technology Research Institute
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Shih Hsi-fu
Opto-electronics & Systems Laboratories Industrial Technology Research Institute
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WANG Jinn-Kang
Opto-Electronics & Systems Labs., Industrial Technology Research Institute
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