Holographic Optical Module Integrated with Chip Elements for Optical Disk Pickups

Optical disk memories, especially CD-ROMs, have begun to be equipped commonly in desktop personal computers as a key device for mass memories in the recent multimedia circumstances. A demand for equipping them into notebook PCs will be a matter before long. To use in notebook PCs by reducing their optical pickup thickness, the authors have already developed an optical pickup integrated with bear laser diode and photodiode chips and a holographic optical elemento.