A novel highly integrated red LDH (laser/detector/hologram) unit for high-density magneto-optical disk system

Author

Ijima, S. ; Nakanishi, H. ; Takasuka, S. ; Takayama, T. ; Yoshikawa, A. ; Itoh, K. ; Arai, A. ; Nagata, T. ; Hayashi, T. ; Nakamura, T.

Author_Institution

Electron. Res. Lab., Matsushita Electron. Corp., Osaka, Japan

fYear

1999

fDate

28-28 May 1999

Firstpage

492

Abstract

Summary form only given. Recently, much attention has been paid to integrate optical pick-up components to realize a thin and small-sized pick-up for optical disk systems. In a conventional pick-up for a magneto-optical disk system, 11 optical components are needed to detect magneto-optical recording signals. As a result, a pick-up becomes inevitably thick and large. In this work, we demonstrate a very small-sized (3.5/spl times/8.8/spl times/6.6 mm) LDH unit, which integrates 11 optical components including a 50 mW high power AlGaInP red laser diode for high-density magneto-optical disk systems.

Keywords

holographic optical elements; integrated optics; magneto-optical recording; optical signal detection; photodetectors; quantum well lasers; 3.5 mm; 50 mW; 6.6 mm; 8.8 mm; AlGaInP; HOE; high-density magneto-optical disk system; high-power red laser diode; hybrid device; integrated laser/detector/hologram unit; optical pick-up components; photodetector substrate; quantum well laser; servo signals detection; small-sized pick-up; Disk recording; Integrated optics; Magnetooptic devices; Magnetooptic recording; Optical devices; Optical recording; Packaging; RF signals; Servomechanisms; Signal detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-595-1

Type

conf

DOI

10.1109/CLEO.1999.834492

Filename

834492