Author Affiliations

Michio Oka,^†,*** Minoru Takeda,^* Toehiyuki Kashiwagi,^* Masanobu Yamamoto,^* Michibiko Sakamoto,^** Kenji Kondo,^† Kouichi Tatsuki,^† and Shigeo Kubota^†

^†Kubota Optoelectronics Laboratory, Research Center, Sony Corporation 6-7-35, Kitashinagawa, Shinagawa-ku, Tokyo 141, Japan, Phone +81-3-5448-5621, Fax +81-3-5448-5634

^*Optical Media Laboratory, Advanced Development Laboratory, Sony Corporation 6-7-35, Kitashinagawa, Shinagawa-ku, Tokyo 141, Japan, Phone +81-3-5448-2532, Fax +81-3-5448-4307

^**Development Division, Sony Precision Technology Inc. Isehara Plant, 45 Suzukawa, Isehara-shi, Kanagawa-ken, 259-11, Japan, Phone +81-463-92-6860, Fax +81-463-92-6863

^*** oka@devo.crl.sony.co.jp