<p>In order to appropriately perform additional recording on an optical disk having a servo layer and a recording layer, an optical disk device for recording information on an optical disk including one or more recording layers laminated in a film thickness direction is provided with an optical system for irradiating the recording layer with a first laser spot and a second laser spot, and performs track pitch adjustment for adjusting the spacing in the radial direction between mark rows formed in the recording layer when recording information by forming marks using the second laser spot while performing tracking using the first laser spot.</p>
