Patent ID: 7057999

Claim:
An optical head for near-field recording and reproduction, comprising: a slider which hovers above a recording medium by air dynamic pressure; a light device module formed on a surface of the slider which faces the recording medium, the light device module comprising: a vertical cavity surface emitting laser (VCSEL) which emits light toward the recording medium, and a photodetector which detects the light emitted from the VCSEL and then reflected by the recording medium; a first lens layer deposited on the light device module using a transparent material, the first lens layer comprising a first lens which condenses incident light at a portion corresponding to a light emitting portion of the VCSEL; and an optical path control layer having a hologram at the center thereof, which controls the traveling path of incident light such that the light incident from the VCSEL through the first lens layer travels toward the recording medium, and the light reflected by the recording medium travels toward the photodetector, wherein the VCSEL comprises: a doped first distributed Bragg reflector (DBR) formed by alternately stacking layers of semiconductor materials having different refractive indexes, an active layer formed on the first DBR, and a second DBR doped with a type opposite to the doping of the first DBR, the second DBR formed by alternatively stacking semiconductor materials having different refractive indexes, wherein the VCSEL emits the light through a window of the second DBR.