Near-field phase-change optical recording using a GaP hemispherical lens

Kusato Hirota; Tomas D. Milster; Kei Shimura; Yan Zhang; Joshua Sseunhyeun Jo

doi:10.1117/12.997634

28 June 1999 Near-field phase-change optical recording using a GaP hemispherical lens

Kusato Hirota, Tomas D. Milster, Kei Shimura, Yan Zhang, Joshua Sseunhyeun Jo

Proceedings Volume 3864, Joint International Symposium on Optical Memory and Optical Data Storage 1999; 386437 (1999) https://doi.org/10.1117/12.997634
Event: Optical Data Storage, 1999, Kauai, HI, United States

Abstract

The data density ofthe optical recording medium depends on the focused beam spot size, which is limited by diffraction. The beam spot size can be reduced by using a shorter wavelength light source or a larger NA objective lens. Recently, near-field optical techniques using evanescent light, have been developed to overcome the diffraction limit of far-field optics.

Citation Download Citation

Kusato Hirota, Tomas D. Milster, Kei Shimura, Yan Zhang, and Joshua Sseunhyeun Jo "Near-field phase-change optical recording using a GaP hemispherical lens", Proc. SPIE 3864, Joint International Symposium on Optical Memory and Optical Data Storage 1999, 386437 (28 June 1999); https://doi.org/10.1117/12.997634

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