[1] [1] B. V. Johnson, G. A. McDermott, M. P. O’Neill et al.. Using Pit-depth Modulation to Increase Capacity and Data Transfer Rate in Optical Discs [C]. Conference Digest of Optical Date Storage Topical Meeting, 1997. 44～45

[2] [2] Takeo Ohta, Kenichi Nishiuchi, Kenji Narumi et al.. Overview and the future of phase-change optical disk technology[J]. Jpn. J. Appl. Phys., 2000, 39(Part 1, 2B):770～774

[3] [3] Kenjirou Kiyono, Michikazu Horie, Takashi Ohno et al.. Rewritable multilevel recording by mark-size modulation on growth-dominant phase-change material[J]. Jpn. J. Appl. Phys., 2001, 40(Part 1, 3B):1855～1856

[4] [4] M. O’Neill, K. Balasubramanian, J. Stinebaugh. Phase-change multilevel recording for 2 GB CD-RW [C]. PCOS, 2001. 43～50

[5] [5] Hua Hu, Duanyi Xu, Guosheng Qi et al.. Multi-level storage based on photochromic recording material [C]. SPIE, 2002, 4930:258～260

[6] [6] Denis A. Akimov, Andrei B. Fedotov, Nikolai I. Koroteev et al.. Optimizing two-photon three-dimensional data storage in photochromic materials using the principles of nonlinear optics[J]. Jpn. J. Appl. Phys., 1997, 36(Part 1, 1B):426～428

[7] [7] Kyohei Iwamoto, Tsuyoshi Konishi, Jun Tanida et al.. Angular selectivity in nondestructive readout of hologram on photochromic protein bacteriorhodopsin[J]. Jpn. J. Appl. Phys., 2002, 41(Part 1, 3B):1864～1865