Abstract: Provided are a master recording medium and a method of manufacturing the master recording medium. The master recording medium includes: a plate; and a magnetic layer which is formed on the plate for magnetically transferring of a servo pattern that is to be formed on a magnetic recording medium. The method of manufacturing a master recording medium includes: engraving a polymer layer by nano imprinting to form an engraved pattern corresponding to a servo pattern to be formed on a magnetic recording medium; forming a magnetic layer which fills in the engraved pattern of the polymer layer; forming a back plate layer on the magnetic layer; and performing processing to expose the servo pattern on a surface of the magnetic layer that is opposite a surface of the magnetic layer on which the back plate layer is formed.

Abstract: Provided is a master recording medium suitable for use in magnetic transfer of a servo pattern onto a magnetic recording medium. The master recording medium includes a substrate including a plurality of servo regions and a plurality of data regions, and a magnetic layer formed on each of the servo regions and patterned in the shape of a servo pattern to be patterned on a magnetic recording medium, wherein the servo regions protrude relative to the data regions.

Abstract: A magnetic thin film structure, a magnetic recording medium including the same, and a method of manufacturing the magnetic recording medium are provided. The magnetic recording medium includes an under layer formed of a transition metal nitride on a substrate and a plurality of magnetic dots, which are unit recording regions, formed of a magnetic material having magnetic anisotropy energy between 106 erg/cc and 108 erg/cc.

Abstract: A magnetic recording medium and a method of manufacturing the magnetic recording medium are provided. In order to increase the recording density of the magnetic recording medium, the magnetic recording medium is configured to multiple magnetic layers by consecutively forming a first magnetic layer having a thin film shape and a second magnetic layer comprising patterned magnetic bits. The first magnetic layer has a magnetic anisotropic coefficient greater than that of the second magnetic layer.

Abstract: A method of nano-patterning, a method of manufacturing a nano-imprinting master and a discrete track magnetic recording medium are all provided. The method of nano-patterning includes (a) sequentially forming on a substrate an etching object material layer, a photoresist layer, and a metal layer patterned to a first pattern having a structure in which line patterns are repeatedly arranged with a predetermined interval; (b) irradiating light onto a surface of the metal layer to excite surface plasmon so that the photoresist layer is exposed to a second pattern by the surface plasmon; (c) removing the metal layer and developing the photoresist layer; and (d) etching the etching object material layer using the photoresist layer patterned to the second pattern as a mask.

Abstract: An optical pickup and an optical recording and/or reproducing apparatus using the optical pickup are provided. The optical pickup includes: a light source; an optical bench on which the light source is mounted; a focusing member including an objective lens, focusing light emitted from the light source to form a light spot on an optical information storage medium; and an optical path forming member having a transparent block that includes a light entrance/exit surface on which the optical bench and the focusing member are arranged, a first reflection surface, and a second reflection surface opposing the first reflection surface, where the optical path forming member directs the light emitted from the light source toward the objective lens by reflecting the light emitted from the light source on the first and second reflection surfaces. The optical pickup satisfies the requirement for smaller, slimmer design and can be integrated using semiconductor manufacturing processes.

Abstract: An integrated optical head is provided. In the integrated optical head, a light source emits light. A waveguide guides the light. An input coupler is located at one edge of the waveguide, and couples light emitted from the light source and transmits the coupled light to the waveguide. An output coupler is located at another edge of the waveguide, and couples light emitted from the waveguide and focuses the coupled light on an optical disc. A light path changing unit is installed on the waveguide, and changes the light path of light that has been reflected by the optical disc and then passed through the output coupler. An optical detector receives the light passed through the light path changing unit and converts the received light into an electrical signal in order to detect information from the optical disc. Accordingly, an input coupling efficiency and an output coupling efficiency are improved, such that light loss is reduced.

Abstract: Disclosed is a method for manufacturing a template for a high-density patterned medium and a high-density magnetic storage medium using the same. In the method, magnetic particles are used as a mask and no lithographic process is required.

Abstract: A method of manufacturing a solvent-soluble stamp for nano-imprint lithography is provided. According to the method, a stamp is formed on a master substrate made of an ultraviolet-transparent material, using a material which is soluble in a solvent, and then a metal stamp or another stamp for a nano-imprint lithography is manufactured using the solvent-soluble stamp. Next, the stamp for nano-imprint lithography can be achieved by melting the soluble stamp. Therefore, it is possible to reuse the master several times. Further, it is possible to solve a problem in which a mold cannot be separated from the stamp. Furthermore, a uniform and clean stamp with a nano size can be obtained.

Abstract: Provided are a patterned magnetic recording medium and a method of manufacturing the same. The patterned magnetic recording medium include: a substrate; and a plurality of magnetic recording layers arranged at predetermined intervals, wherein the magnetic recording layers are formed of an alloy including Co, Pt, and Ni. The patterned medium having the magnetic recording layers have an excellent read/write characteristic and high corrosion resistance and recording density.

Abstract: A micro-lens array and manufacturing method. A hybrid micro-lens in which a refractive lens and a diffraction lens are formed includes: a refractive lens; a first ultraviolet hardening material which is bonded on a curved surface of the refractive lens to form an aspheric surface; a support substrate including a concave portion into which the refractive lens is inserted and supported; and a diffraction lens which is formed at a position corresponding to the refractive lens disposed on the support substrate.

Abstract: Provided are a method of manufacturing a magnetic layer, a patterned magnetic recording medium including magnetic layers formed using the method, and a method of manufacturing the patterned magnetic recording medium. The method of manufacturing the magnetic layers includes: forming a template provided with an opening; forming a seed layer on a bottom of the opening; and inserting a magnetic material onto the seed layer to form a magnetic layer. The patterned magnetic recording medium includes a lower layer formed on a substrate; a template formed on the lower layer and including a plurality of holes exposing the lower layer; seed layers covering the lower layer exposed through the holes; and magnetic layers formed on the seed layers to fill the holes.

Abstract: A hybrid achromatic optical lens having a high numerical aperture whose chromatic aberration is removed and a method for manufacturing the same are provided. The hybrid achromatic optical lens includes a first optical member of a low index of refraction and a second optical member of a high index of refraction. The second optical member is formed on a depressed portion of the first optical member and has a diffractive surface, which is a contact surface of the second optical member with the first optical member and has a plurality of pitches formed on a refractive surface.

Abstract: An integrated optical pickup and a manufacturing method thereof, and an optical information storage system including the pickup.

Abstract: A hybrid achromatic optical lens having a high numerical aperture whose chromatic aberration is removed and a method for manufacturing the same are provided. The hybrid achromatic optical lens includes a first optical member of a low index of refraction and a second optical member of a high index of refraction. The second optical member is formed on a depressed portion of the first optical member and has a diffractive surface, which is a contact surface of the second optical member with the first optical member and has a plurality of pitches formed on a refractive surface.

Abstract: A light delivery module, a method of fabricating the same, a heat-assisted magnetic recording head using the light delivery module are provided. The light delivery module delivers light emitted from a light source. The light delivery module includes an optical waveguide having an inclined plane of an angle ? with respect to an incident light axis to deliver an incident light, and a nano aperture changing an energy distribution of the light delivered through the inclined plane to generate an enhanced near-field. The heat-assisted magnetic recording head is mounted on one end of a slider with an air bearing surface to perform a recording operation on a recording medium. The heat-assisted magnetic recording head includes a magnetic path forming unit forming a magnetic field for recording, a light source emitting light for heating a predetermined region of a recording surface of the recording medium, and the light delivery module.

Abstract: A heat assisted magnetic recording (HAMR) head is provided. The HAMR head is mounted in a slider having an ABS that faces a recording medium and illuminates light on the local area of the recording medium, and includes a recording unit that performs recording and a near field light emitter that illuminates near field light onto the local area of the recording medium, the near field light emitter including a light source, a waveguide, and a near field light emission (NFE) pole located between the recording unit and the waveguide, and which generates near field light that is illuminated on the recording medium using light transmitted through the waveguide.

Abstract: A heat assisted magnetic recording (HAMR) head and manufacturing method are provided. The HAMR head is mounted on a slider having an air-bearing surface (ABS) and includes a substrate; a recording unit formed on the substrate and having a stepped end; a waveguide located in a space formed by the stepped end; and a near field light emission (NFE) pole located adjacent to the recording unit and having an end located on a same plane as the ABS. The method includes forming a cladding layer on a substrate; forming a first metal layer on the cladding layer; etching a part of the first metal layer; forming a core layer on the etched region; forming a refraction part in a part of the core layer; forming a second metal layer the first metal layer and the core layer; and forming a recording unit on the second metal layer.

Abstract: A heat-assisted magnetic recording head (HAMR) head includes a magnetic recording head including a recording pole for applying a magnetic recording field on a magnetic recording medium and a return pole magnetically connected to the recording pole to form a magnetic path, a light source for emitting light, and an optical transmission module including an photonic crystal waveguide disposed at a side of the magnetic recording head to guide light incident from the light source and a nano aperture for enhancing an optical field by varying an intensity distribution of the light guided through the photonic crystal waveguide.

Abstract: A hybrid achromatic optical lens having a high numerical aperture whose chromatic aberration is removed and a method for manufacturing the same are provided. The hybrid achromatic optical lens includes a first optical member of a low index of refraction and a second optical member of a high index of refraction. The second optical member is formed on a depressed portion of the first optical member and has a diffractive surface, which is a contact surface of the second optical member with the first optical member and has a plurality of pitches formed on a refractive surface.