Optical information reproducing method, optical head device,...

Details Optical information reproducing method, optical head device,... Optical information reproducing method, optical head device,...

2006-10-24

2006-10-24

Edun, Muhammad (Department: 2627)

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

C369S013050, C369S112050, C369S110010, C369S047100

Reexamination Certificate

active

07126883

ABSTRACT:
An optical information reproducing method of the present invention is used for an optical recording medium. The optical recording medium includes a recording layer containing information and a mask layer that is located close to the recording layer and includes a nonlinear optical material whose optical properties are changed in accordance with incident light intensity. The method includes irradiating the optical recording medium with convergent light that is polarized in a first direction and dividing reflected light from the optical recording medium into a first polarized component that is polarized in the first direction and a second polarized component that is polarized in a second direction perpendicular to the first direction. The second polarized component is used to detect a reproduction signal.

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