International Symposium on Optical Memory and Optical Data Storage Topical Meeting最新文献

Elliptic solid immersion lens for NFR; compensation for disk thickness variation and disk tilt 近红外椭圆型固体浸没透镜;补偿磁盘厚度变化和磁盘倾斜

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028618

T. Song, H. Kwon, N. Park, Young-Pil Park

{"title":"Elliptic solid immersion lens for NFR; compensation for disk thickness variation and disk tilt","authors":"T. Song, H. Kwon, N. Park, Young-Pil Park","doi":"10.1109/OMODS.2002.1028618","DOIUrl":"https://doi.org/10.1109/OMODS.2002.1028618","url":null,"abstract":"In the last decade of optical data storage development, near-field recording (NFR) technology has been suggested for achieving higher areal density. However, there remain several serious and practical issues. The major defects in NFR due to the use of a solid immersion lens (SIL) are dust and thermal problems compared to orthodox optical storage technologies. The existing SIL is delicate in an unsealed environment due to heat, dust, contamination etc. CISD released a new SIL concept called elliptic solid immersion lens (ESIL) at the last ISOM (T.S. Song et al, ISOM01 p. 130, 2001). The new ESIL is capable of resolving some critical problems that are possibly caused by the existing SIL which records on the disk surface; in addition, the ESIL does not require an objective lens and with its simple structure, it has achieved improvements in mechanical tolerances of the alignment process and in pickup actuator dynamics. Although the ESIL possesses the potential to reduce present restrictions from the conventional SIL, it is necessary to establish a focusing servo system against variation in thickness of the cover layer. Also, a gap maintenance and tilt compensation system using an optical sensor and PZT was proposed in this paper.","PeriodicalId":393728,"journal":{"name":"International Symposium on Optical Memory and Optical Data Storage Topical Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115238166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Functional hard-coat for cartridge-free DVR-blue 无卡带dvr蓝功能硬涂层

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028551

N. Hayashida, H. Hirata, T. Komaki, M. Usami, T. Ushida, H. Inoue, T. Kato, H. Shingai, H. Utsunomiya

{"title":"Functional hard-coat for cartridge-free DVR-blue","authors":"N. Hayashida, H. Hirata, T. Komaki, M. Usami, T. Ushida, H. Inoue, T. Kato, H. Shingai, H. Utsunomiya","doi":"10.1109/OMODS.2002.1028551","DOIUrl":"https://doi.org/10.1109/OMODS.2002.1028551","url":null,"abstract":"Optical discs with larger storage capacity and higher data recording rates are required for the coming digital network society, for example, to realize non-linear editing and long term data archiving on broadcasting tasks. We have been developing a new phase change optical disc, which has much higher data recording rate of up to 140 Mbps (T. Kato et al, Tech. Dig. ISOM2001, pp. 200-201, 2001), based on the DVR system (/spl lambda/=405 nm, NA=0.85, cover layer thickness=100 /spl mu/m) (Y. Kuroda et al, 1999; M.J. Dekker et al, 2000; Y. Kasami et al, 2000). As a general rule, the smaller the laser spot size on the disc surface, the more sensitive the disc becomes to scratches or fingerprints on it. In such a system, the distance between the disc surface and objective lens (i.e. working distance) is very narrow due to a high NA. Therefore it is also feared that the objective lens hits the disc surface due to an external impact. To avoid these problems when the disc is taken out of a cartridge, we have developed a new hard-coat. The cartridge-free DVR-blue disc was expected to be accomplished by the following properties: (1) abrasion resistance; (2) scratch resistance; (3) water and oil repellency (low surface free energy). Among these properties, the abrasion resistance is considered to be the most important.","PeriodicalId":393728,"journal":{"name":"International Symposium on Optical Memory and Optical Data Storage Topical Meeting","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115604839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plastic substrate with high performance using a new polycarbonate with addition of an antiplasticizer. II [optical disc storage] 高性能塑料基材采用添加了抗塑剂的新型聚碳酸酯。II[光碟储存]

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028558

M. Ueda

{"title":"Plastic substrate with high performance using a new polycarbonate with addition of an antiplasticizer. II [optical disc storage]","authors":"M. Ueda","doi":"10.1109/OMODS.2002.1028558","DOIUrl":"https://doi.org/10.1109/OMODS.2002.1028558","url":null,"abstract":"The author found that higher transcribability, better flow property, higher stiffness, lower birefringence, and lower water absorption, while maintaining transparency, were created by the addition of a small amount of antiplasticizer to a conventional bisphenol A backboned polycarbonate (PC) for an injection molded optical disk substrate. At ODS 2001 (M. Ueda, Proc. SPIE, vol. 4342, p. 39, 2002), it was shown that addition of m-tPh (meta-terphenyl) to PC resulted in the excellent performance described above. This technology would be advantageous for production of optical disk substrates without significant increase in material cost. However, such an additive may act as an impurity for an extra pure PC, which may cause poor signal quality. If the additive acts like an impurity, white spots are generated inside the polycarbonate substrate and the transmittance is depressed. In this paper, the author investigated life test performance for substrates made from PC with m-tPh addition. Also, the improved surface hardness induced by m-tPh addition was demonstrated. This nature is preferable for a transparent thin cover layer, since it can avoid a scratch marks. Finally, the ideal viscoelastic property behavior for a resin to achieve higher transcribability, lower birefringence, and lower tilt angle, is proposed.","PeriodicalId":393728,"journal":{"name":"International Symposium on Optical Memory and Optical Data Storage Topical Meeting","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125271064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

257-nm optical disk cutting-machine 257nm光盘切割机

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028557

T. Andou, H. Nakamoto, M. Yanagi, N. Kimura

引用次数: 1

Experimental effects of laser power on the writability and PW/sub 50/ in a heat assisted longitudinal recording system 激光功率对热辅助纵向记录系统可写性和PW/sub 50/的实验影响

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028601

T. Rausch, J. Bain, D. Stancil, T. E. Schlesinger, W. Challener, T. McDaniel, N. Deeman, C. Brucker

引用次数: 1

Adaptive signal processing method using PRML for high density optical disks 高密度光盘的PRML自适应信号处理方法

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028583

O. Kawamae, T. Yasukawa, T. Hoshizawa, K. Nishimura, M. Takahashi

引用次数: 0

High-NA achromatic objective lens 高na消色差物镜

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028678

B. Hendriks, M. Kuijper, J. M. ter Meulen, J. Schleipen, J. D. de Vries

引用次数: 2

Electron beam recording with a novel differential pumping head realizing over 50 GB/layer capacity disc 电子束记录与一个新的差分泵头实现超过50 GB/层容量光盘

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028553

M. Takeda, M. Furuki, M. Yamamoto, Y. Aki, H. Kawase

{"title":"Electron beam recording with a novel differential pumping head realizing over 50 GB/layer capacity disc","authors":"M. Takeda, M. Furuki, M. Yamamoto, Y. Aki, H. Kawase","doi":"10.1109/OMODS.2002.1028553","DOIUrl":"https://doi.org/10.1109/OMODS.2002.1028553","url":null,"abstract":"High density mastering is the key technology to manufacture next generation optical disc recording with over 20 GB capacity for more than 2 hours of HDTV digital data. We developed a deep UV laser beam recorder (DUV-LBR) and the related mastering process to achieve such a high density (M. Takeda et al, Jpn. J. Appl. Phys. vol. 38, pp. 1837-1838, 1999), which is now to be introduced in the disc mastering process line of DVR-blue (I. Ichimura et al, Tech. Dig. ODS2001, pp. 139-141, 2001). Beyond DUV-LBR, an electron beam recorder (EBR) was proposed to produce further high density pit patterns (Y. Wada et al, Jpn. J. Appl. Phys. vol. 40, pp. 1653-1660, 2001). We have developed a new concept EBR with a novel differential pumping head attached to the bottom portion of the electron beam column. It has no vacuum chamber and an air-spindle motor with a translation stage under the electron beam column is installed in the atmosphere like a conventional LBR. The differential pumping head effectively separates the high vacuum region and the surrounding atmospheric pressure region. The high vacuum region, which is necessary for the electron beam emitted from the column and focused onto the resist coated silicon (Si) substrate, is confined within only a narrow gap between the head and the resist surface. As the spindle motor and the translation stage are operated not in a vacuum chamber but in the atmosphere, high speed recording with sufficient rotational and translational accuracy can be attained. Furthermore, the main body of the EBR can be very compact and cost effective due to the lack of a large and expensive vacuum chamber. In this paper, we report 25 GB density recording performance of our newly developed EBR and some experimental results of recording and reproducing even higher densities up to 50 GB.","PeriodicalId":393728,"journal":{"name":"International Symposium on Optical Memory and Optical Data Storage Topical Meeting","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128623008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Timing recovery algorithm for magnetic amplifying magneto-optic system (MAMMOS) 磁放大磁光系统(MAMMOS)定时恢复算法

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028663

J. Liu, H. Song, B. Kumar, A. Inaba, K. Shimazaki, N. Ota

引用次数: 0

A new cylindrically shaped optical data storage medium based on adhesive tape-concept and first results 一种基于胶带的新型圆柱形光学数据存储介质——概念及初步成果

International Symposium on Optical Memory and Optical Data Storage Topical Meeting Pub Date : 2002-11-07 DOI: 10.1109/OMODS.2002.1028586

K. Schulte-Wieking, S. Noehte, C. Dietrich, M. Mayer

引用次数: 3