Near-field recording with 266 nm laser for disc mastering process

S. Imanishi1, M. Takeda1, M. Yamamoto1, N. Mukai1, K. Takagi1, T. Kono1
1Nano-lithography Section, Department 2, Optical Disc Development Division, AV/IT Development Group, Sony Corporation, Shinagawa, Tokyo, Japan

Tóm tắt

We developed a near-field recording process with a 266 nm blue-violet laser and an objective lens of 1.35 NA. A two-stage servo with air suspension and PZT control sufficiently constrained the gap fluctuation between the supersphere solid immersion lens (SIL) and the glassmaster. As a result, the expected small size of the pit pattern was obtained. We expect that this breakthrough will be refined much more and improve the density of optical recording.

Từ khóa

#Disk recording #Lenses #Laser beams #Actuators #Fluctuations #Optical surface waves #Optical refraction #Optical sensors #Optical variables control #Electrooptic modulators

Tài liệu tham khảo

10.1143/JJAP.39.800 10.1143/JJAP.38.1837 kishima, 2001, ODS Technical Digest, 280 10.1143/JJAP.39.937