To accurately record information on an optical disk wherein a hologram is formed.
An information recording device 60 diffracts a light beam L0 by a grating 72, and sets zeroth-order light and primary light respectively to a recording light beam LE and a servo light beam LS, condenses each beam with an objective lens 76 to form focal points FE and FS, makes the focal point FS slightly precede the focal point FE along the traveling direction of a track T, and detects a servo reflected light beam LSR to servo-control the objective lens 76, thereby allowing the servo reflected light beam LSR to follow a place where an initial hologram IH is not broken yet in a target track TG and therewith conforming the focal point FE of the recording light beam LE to a target position PG. Therefore, the initial hologram IH at the target position PG is broken to generate a recording mark RM appropriately.
| WO/2001/080234 | DEVICE AND METHOD |
| WO/1996/020473 | OPTICAL PICKUP DEVICE |
| JP3374774 | [Title of Invention] Optical Disc Device |
HORIGOME TOSHIHIRO
YAMATSU HISAYUKI
SAITO KIMIHIRO
