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New achievements for DVD pick-ups
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CHINESE scientists said on Wednesday they have developed a 650 nanometre semiconductor laser diode, one of the key components for digital video disk (DVD) pick-ups used in DVD players and for computer CD-ROMs.
A monthly production capacity of 100,000 such laser diodes, which can also be applied to medical apparatus, communication equipment, computers and laser phototype setting, has been formed, said Chen Lianghui, an academician of the Chinese Academy of Sciences (CAS).
A group of scientists headed by Chen made the breakthrough after two years of efforts, with fund from China's top high-technology development plan Programme 863 and the CAS.
At an evaluation meeting organized by the CAS, Chen told a group of experts that their products have passed testing by Japanese company Pulstec and trial use in companies set up in China by Toshiba and Hitachi.
The testing and trial use show the new product is on par with the advanced level of similar overseas products, represented by Toshiba TOLD 9441, he said.
According to him, a group of Japanese and Korean DVD pick-ups producers have asked for samples of the Chinese-made products and are considering filling in orders for them.
Li Yuzhang, also a CAS research fellow, said the market potential for the technology is huge in and outside China.
"The demand for DVD players around the world is expected to reach 120 million, including 10 million from China, and 80 million DVD players will be used for personal computers," said Li.
Li, also executive deputy director of the National Engineering Research Center for Optoelectronics Devices, said the researchers are planning to commercialize the technology by setting up a joint venture with domestic companies for an annual capacity of 15 million such laser diodes.
Last year, China included DVD pick-ups into its catalogue of priority products and technology.(Xinhua)
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