NSIP Law
Apparatus and method for recording/reproducing holographic data and holographic data storage medium
A method and apparatus for recording and/or reproducing holographic data and a holographic information storage medium, wherein the apparatus for recording and/or reproducing holographic information includes an optical pickup emitting light onto a holographic information storage medium and receiving the emitted light. The optical pickup includes: a light source unit emitting a signal beam and a reference beam in a recording mode; and a focusing optical system focusing the signal beam and the reference beam on one focal point in the holographic information storage medium so that information can be recorded by using an interference pattern formed along a depth direction of the holographic information storage medium in the vicinity of the focal point, wherein the numerical aperture of the focusing optical system for the signal beam is different from the numerical aperture of the focusing optical system for the reference beam.
Samsung Electronics Co., Ltd.
G G G
G11B G11B G11B
inventional inventional additional
Taek-seong Jae-cheol Young-min Tatsuhiro Hyun-soo
Jeong Bae Cheong Otsuka Park