14results about "Recording involving layer ablation" patented technology

A data carrier comprising a ceramic substrate having a first and an opposite second surface and a thickness of at most 500 µm, wherein the first surface of the substrate has a plurality of laser-ablated depressions encoding information, each depression having a depth of at most 1 µm.

A data carrier capable of storing information for a long period of time, capable of increasing the capacity of stored information, and a method and system for reading out the information are provided. [Solution] The information is combined by acquiring and processing an image of the layer of photoluminescent material through the surface layer of the data carrier having information-encoded recesses in a system including a structured illumination microscope (SIM) or saturated structured illumination microscope (SSIM) device. The photoluminescent material layer is provided on the sample support of the device or on one or both sides of the data carrier. The information-encoded recesses are formed in a coating layer coated on the ceramic substrate of the data carrier, in a photoluminescent material layer provided on the substrate, or in a coating layer coated on the photoluminescent material layer.

The invention relates to an optical fiber laser which comprises a seed source used for generating initial pulse laser, a coupler used for dividing the initial pulse laser into two paths of pulse laser, a first acousto-optic modulator used for opening and closing the light path of one path of pulse laser divided by the coupler, a second acousto-optic modulator used for opening and closing the light path of the pulse laser, and a third acousto-optic modulator used for opening and closing the light path of the pulse laser, the optical path of the pulse laser is a reference optical path, and the control unit is used for controlling on or off of the first acoustic optical modulator and on or off of the second acoustic optical modulator and controlling on or off of the first acoustic optical modulator and on or off of the second acoustic optical modulator. Therefore, the laser pulse frequency when the two paths of light are combined and output is consistent with the pulse frequency of the initial pulse laser generated by the seed source. The invention further provides a multi-dimensional optical storage device and a storage performance improving method of the multi-dimensional optical storage device. According to the invention, high-speed pulse switching can be realized, and high-frequency pulse optical signal output in any arrangement can be realized according to requirements.

The invention belongs to the technical field of optical discs, and particularly discloses a writing device and equipment for a single-wavelength single-servo-layer multi-recording-layer optical disc. Comprises: a first light source for generating a recording beam; the second light source is used for generating a servo light beam; the first beam splitting module is arranged at the position where the propagation directions of the recording light beam and the servo light beam intersect, and is used for transmitting the recording light beam and reflecting the servo light beam and the reflected light of the servo layer; the photoelectric detector is used for detecting a reflected light signal of the servo layer and controlling the torquer to drive the second lens to move according to the change of the reflected light signal, so that the recording light beam and the servo light beam are always focused on the data layer and the servo layer respectively; the wavelength of the recording light beam emitted by the first light source is the same as that of the servo light beam emitted by the second light source. According to the invention, data servo / write-in is realized by using the single wavelength, only the single wavelength needs to be subjected to design optimization, and the optical head has significant advantages in reducing the size of the optical head and improving the performance.

The present invention relates to a method for recording data on or in a layer of a ceramic material and to a device for recording data on or in a layer of a ceramic material.

The present invention relates to a data carrier comprising a plastics substrate having first and second opposite surfaces and a thickness of at most 500 µm, wherein the first surface of the substrate is coated with a first coating, the material of the first coating being different from the material of the substrate, wherein the first coating comprises a plurality of laser-ablated recesses encoding information, and wherein the first coating comprises one or a combination of the following materials: a metal nitride, a metal carbide, a metal boride, a metal silicide.

The present invention relates to a compact writing and reading head for hyper-speed data recording on ceramic material.

Device for recording data in a layer of the ceramic material (1), the device comprising: a laser source (2) comprising a picosecond laser or a femtosecond laser; a digital micromirror device (3) that can emit multiple laser beams (4); a collimation optic for focusing the laser light emitted from the laser source onto the digital micromirror device (3); a substrate holder (6) for mounting a substrate (7); and a focusing optic (8) suitable for focusing each of the multiple laser beams (4) emitted by the digital micromirror device (3) onto a substrate (7) mounted on the substrate holder (6); wherein the fluence of each of the multiple laser beams (4) emitted by the digital micromirror device (3) is greater than 100 mJ / cm 2 is.

The invention relates to a method for recording data in a layer of ceramic material and to a device for recording data in a layer of ceramic material.

The present invention relates to a method for recording data in a layer of a ceramic material and to a device for recording data in a layer of a ceramic material.

The present invention relates to compact write and read heads for ultra-high speed data recording in ceramic materials.