Patent ID: 8102742

Claim:
The optical information recording apparatus comprising: a light source which emits recording light; a light emitting unit which irradiates an optical information recording medium with the recording light, the recording light including first recording light and second recording light emitted after the first recording light, a recording mark being formed in the optical information recording medium only in an area in which both a two-photon absorption reaction caused by first irradiation with the first recording light and a thermal reaction caused by second irradiation with the second recording light occur; a position adjusting unit which positions a focal point of the recording light emitted from the light emitting unit at a desired target position; and an irradiation control unit which controls the irradiation with the first recording light and the second recording light such that a change area irradiated with the first recording light and an irradiation area irradiated with the second recording light overlap each other; wherein the position adjusting unit rotates the optical information recording medium so that a track is formed in the optical information recording medium in a spiral or concentric pattern, and wherein the irradiation control unit controls the irradiation with the first recording light and the second recording light such that times at which the first recording light and the second recording light are emitted are shifted from each other by a first irradiation delay time so that the change area irradiated with the first recording light and the irradiation area irradiated with the second recording light overlap each other in a track direction along which the track extends.