片山教授の研究分野
各種の光システムに新たな価値を付与するための新規な機能性光学素子の研究、およびそれを用いた高機能・高性能な光システムの研究。
査読付き論文リスト
（日本電気株式会社での研究）
1) Ryuichi Katayama, Yutaka Yamanaka, Keiichi Kubota and Takemasa Ishikawa, "Low Noise 0.78?m-Band Laser Diode Unit Containing Faraday Rotator", Electron. Lett., Vol. 24, No. 8, pp. 480-481 (1988).
2) Masaki Tsunekane, Kenji Endo, Shin Ishikawa, Ryuichi Katayama, Kazuhiro Yoshihara, Keiichi Kubota and Tonao Yuasa, "Monolithic Eight-Channel High-Power Low-Astigmatism AlGaAs Laser Diode Array", Jpn. J. Appl. Phys., Vol. 28, No. 3, pp. L468-L469 (1989).
3) Masaki Tsunekane, Kenji Endo, Masaaki Nido, Iwao Komazaki, Ryuichi Katayama, Kazuhiro Yoshihara, Keiichi Kubota and Tonao Yuasa, "High-Power Individually Addressable Monolithic Laser Diode Array", Electron. Lett., Vol. 25, No. 16, pp. 1091-1092 (1989).
4) Akitomo Ohba, Yasuo Kimura, Seijin Sugama, Ryuichi Katayama and Yuzo Ono, "Reflection Polarizing Holographic Optical Element for Compact Magnetooptical Disk Heads", Appl. Opt., Vol. 29, No. 34, pp. 5131-5135 (1990).
5) Ryuichi Katayama, Kazuhiro Yoshihara, Yutaka Yamanaka, Masaki Tsunekane, Kinji Kayanuma, Toshiaki Iwanaga, Osamu Okada and Yuzo Ono, "Multi-Beam Optical Disk Drive for High Transfer Rate Systems", Jpn. J. Appl. Phys., Vol. 31, No. 2B, pp. 630-634 (1992).
6) 山中豊，片山龍一，小松雄一，小野雄三，“チップ素子実装による光磁気ディスク用小型光ヘッド”，光学，Vol. 21, No. 5, pp. 333-337 (1992).
7) Tsuyoshi Nagano, Eiichi Ueda, Shuichi Onayama, Ryuichi Katayama, Hiroshi Hamada and Yuzo Ono, "Thin Optical Head with Flip-Chip Bonded Module for Compact Disc Read Only Memory Drives", Jpn. J. Appl. Phys., Vol. 32, No. 11B, pp. 5263-5268 (1993).
8) Toshiaki Iwanaga, Hiromi Honma, Kinji Kayanuma, Satoshi Segawa, Masafumi Nakada, Ryuichi Katayama and Hiroshi Inada, "High-Density Land/Groove Recording for Digital Video File System", Jpn. J. Appl. Phys., Vol. 32, No. 11B, pp. 5449-5450 (1993).
9) Toshiaki Iwanaga, Masafumi Nakada and Ryuichi Katayama, "High Density Land/Groove Recording", IEEE Trans. Mag., Vol. 31, No. 6, pp. 3221-3226 (1995).
10) Masatsugu Ogawa, Masafumi Nakada, Ryuichi Katayama, Mitsuya Okada and Masaki Itoh, "Analysis of Scattering Light from Magnetic Material with Land/Groove by Three-Dimensional Boundary Element Method", Jpn. J. Appl. Phys., Vol. 35, No. 1B, pp. 336-341 (1996).
11) Ryuichi Katayama, Yuichi Komatsu, Tsuyoshi Nagano, Akira Watanabe, Kentaro Tada, Hitoshi Hotta and Yuzo Ono, "Compact Magneto-Optical Head Module Integrated with Chip Elements Using Double Holograms", Jpn. J. Appl. Phys., Vol. 35, No. 1B, pp. 362-368 (1996).
12) Ryuichi Katayama, Yuichi Komatsu and Yuzo Ono, "Dual Wavelength Optical Head for 0.6mm and 1.2mm Substrate Thicknesses", Jpn. J. Appl. Phys., Vol. 36, No. 1B, pp. 460-466 (1997).
13) Tsuyoshi Nagano, Hidekazu Shirakawa, Ryuichi Katayama and Yutaka Yamanaka, "Optical Module Using Double-Sided Polarizing Diffractive Optical Element for Digital Versatile Disc Drives", Jpn. J. Appl. Phys., Vol. 37, No. 6B, pp. 3739-3743 (1998).
14) Ryuichi Katayama, Shunichi Meguro and Yuichi Komatsu, "Land/Groove Signal and Differential Push-Pull Signal Detection for Optical Disks by an Improved 3-Beam Method", Jpn. J. Appl. Phys., Vol. 38, No. 3B, pp. 1761-1767 (1999).
15) Ryuichi Katayama, Yuichi Komatsu and Yutaka Yamanaka, "Dual-Wavelength Optical Head with a Wavelength-Selective Filter for 0.6- and 1.2-mm-Thick-Substrate Optical Disks", Appl. Opt., Vol. 38, No. 17, pp. 3778-3786 (1999).
16) Ryuichi Katayama, Shunichi Meguro, Yuichi Komatsu and Yutaka Yamanaka, "Radial and Tangential Tilt Detection for Rewritable Optical Disks", Jpn. J. Appl. Phys., Vol. 40, No. 3B, pp. 1684-1693 (2001).
17) Toshiaki Iwanaga, Shuichi Ohkubo, Masaki Nakano, Masashi Kubota, Hiromi Honma, Tatsunori Ide and Ryuichi Katayama, "High-Density Recording Systems Using Partial Response Maximum Likelihood (PRML) with Blue Laser Diode (LD)", Jpn. J. Appl. Phys., Vol. 42, No. 2B, pp. 1042-1043 (2003).
18) Ryuichi Katayama and Yuichi Komatsu, "Correction of Substrate Vertical Birefringence Using a Patterned Wave Plate", Jpn. J. Appl. Phys., Vol. 44, No. 5B, pp. 3379-3384 (2005).
19) Ryuichi Katayama and Yuichi Komatsu, "Optical Head Using Single Objective Lens for Four Types of Optical Disks", Jpn. J. Appl. Phys., Vol. 47, No. 7, pp. 5784-5793 (2008).
20) Ryuichi Katayama and Yuichi Komatsu, "Blue/DVD/CD Compatible Optical Head", Appl. Opt., Vol. 47, No. 22, pp. 4045-4054 (2008).
21) Ryuichi Katayama and Yuichi Komatsu, "Reduction of Interlayer Crosstalk in Dual-Layer Optical Disks Using Patterned Phase Plate", Jpn. J. Appl. Phys., Vol. 47, No. 8, pp. 6812-6818 (2008).
22) Ryuichi Katayama, Shin Tominaga, Yuichi Komatsu and Mizuho Tomiyama, “Three-Dimensional Recording with Electrical Beam Control”, Jpn. J. Appl. Phys., Vol. 48, No. 3, 03A056 (2009).
23) Ryuichi Katayama and Yuichi Komatsu, "Substrate Thickness Error and Radial Tilt Detection Using a Five-Beam Optical Head", Appl. Opt., Vol. 48, No. 11, pp. 2014-2026 (2009).
24) Ryuichi Katayama, Yuichi Komatsu and Masanao Natsumeda, “Microholographic Recording Using Single-Sided Optics with Electrical Beam Control”, Jpn. J. Appl. Phys., Vol. 49, No. 8, 08KF02 (2010).
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