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Study of the High Density Optical Recording with 405nm Laser Source

ZHANG Dong-ling~(1,2), HE Feng-tao~(2), FENG Xiao-qiang~(2), HOU Xun~(1,2) (1.College of Physics & Information Photoelectronics, Henan University, Henan Kaifeng 475001, China; Precision Mechanics, Academic Sinica, Shaanxi Xi'an 710068, China)  
This paper studies the characteristics of optical recording of CD-RW with 405nm laser source and 0.65 numerical aperture (NA) objective lens. The result reveals that the threshold and optimal laser power in this recording system is 7.5mW, 9mW respectively. A track with a width of 500nm is obtained on the CD-RW disk.
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