11results about "Systems characterised by carrier structure" patented technology

A sensor and method for page-based optical data storage. The sensor includes a partially-reflective mirror, a reflective mirror disposed substantially collinear with and spaced apart from the partially-reflective mirror, and an active layer disposed substantially collinear with and between the partially-reflective mirror and the reflective mirror. The partially-reflective mirror has a first and second side and transmits a portion of light incident on the first side. The reflective mirror reflects light incident on the reflective mirror toward the partially-reflective mirror. The active layer absorbs at least a portion of the light oscillating at the resonant frequency.

A method of writing voxels to a substrate using a laser writing system includes forming a first voxel at a first location in a substrate using a first laser pulse; detecting light emitted or scattered by the substrate due to the formation of the first voxel; determining whether the detected light satisfies a predetermined constraint; and adjusting the amplitude of the second laser pulse when the detected light does not satisfy the predetermined constraint. As a result of forming the voxel, light emission or scattering from the substrate is related to a property of the formed voxel. By monitoring such emission or scattering, changes in performance of the laser write system can be compensated. A laser writing system and a computer program product implementing the method are also provided herein.

Embodiments of the present disclosure relate to a system (800) for reading birefringence data. The system comprises one or more light sources (802, 804); a first polarization state generator (808) positioned to generate a first polarized polarization state from the light of the first wavelength band output by the one or more light sources; a second polarization state generator (810) positioned to generate second polarized light from light of a second wavelength band output by the one or more light sources; an image sensor (822) configured to acquire a sample region (814) from the first polarized light and the second polarized light; a polarization state analyzer (824) is arranged between the sample region and the image sensor; a first band-pass filter configured to pass light of a first wavelength band onto the image sensor; and a second band-pass filter configured to pass light of a second wavelength band onto the image sensor.

A method for forming a birefringent voxel involves simultaneously generating a first seed pulse and a first data pulse. The first seed pulse and the first data pulse are spatially separated laser pulses having different amplitudes. The first seed pulse is focused to a first seed location, and the data pulse is focused to a first data location. The first seed location and the first data location are separated by a predetermined distance along the scanning path, with the first seed location being in front of the first data location. Subsequently, a second seed pulse and a second data pulse are generated and focused to a second seed location and a second data location, respectively. The second seed location and the second data location are separated by a predetermined distance. The second data location is the same as the first seed location, thereby resulting in the formation of a birefringent voxel.

Devices having at least one nanostructured layer derived from a binary sequence written onto an optical medium and methods of preparing the nanostructured layers.

Devices having at least one nanostructured layer derived from a binary sequence written onto an optical medium and methods of preparing the nanostructured layers.

A method for forming birefringent voxels includes simultaneously generating a first seed pulse and a first data pulse. The first seed pulse and the first data pulse are spatially separated laser pulses having different amplitudes. The first seed pulse is focused at a first seed location and the data pulse is focused at a first data location. The first seed location and the first data location are separated by a predetermined distance along the scan path, wherein the first seed location precedes the first data location. Subsequently, a second seed pulse and a second data pulse are generated and focused at a second seed position and a second data position, respectively. The second seed is separated from the data location by a predetermined distance. The second data location is the same as the first seed location, resulting in the formation of birefringent voxels.

A method for writing voxels onto a substrate using a laser writing system includes: forming a first voxel at a first position in the substrate using a first laser pulse; detecting light emitted or scattered by the substrate as a result of the formation of the first voxel; determining whether the detected light satisfies predetermined constraints; and adjusting the amplitude of a second laser pulse if the detected light does not satisfy the predetermined constraints. The light emission or scattering from the substrate as a result of voxel formation is related to the properties of the formed voxel. By monitoring such emission or scattering, it is possible to compensate for changes in the performance of the laser writing system. A laser writing system and a computer program product implementing the method are also provided herein.

A method for forming birefringent voxels comprises simultaneously generating a first seed pulse and a first data pulse. The first seed pulse and the first data pulse are spatially-separated laser pulses having different amplitudes. The first seed pulse is focused at a first seed location, and the data pulse is focused at a first data location. The first seed location and the first data location are separated by a predetermined distance along a scan path, with the first seed location being ahead of the first data location. Subsequently, a second seed pulse and a second data pulse are generated, and focused at a second seed location and second data location, respectively. The second seed and data locations are separated by the predetermined distance. The second data location is the same as the first seed location, resulting in formation of a birefringent voxel.

A method of writing voxels to a substrate using a laser writing system comprises forming a first voxel at a first position in a substrate using a first laser pulse; detecting light emitted or scattered by the substrate as a result of forming the first voxel; determining whether the detected light satisfies a predetermined constraint; and, when the detected light does not satisfy the predetermined constraint, adjusting an amplitude of a second laser pulse. Light emission or scattering from the substrate as a result of forming a voxel is related to the properties of the formed voxel. By monitoring such emission or scattering, it is made possible to compensate for variations in performance of the laser writing system. Also provided herein are a laser writing system and computer program product which implement the method.

One example provides a system (800) for reading birefringence data. The system includes one or more light sources (802, 804); a first polarization state generator (808) positioned to produce a first polarized light polarization state from a first waveband of light output by the one or more light sources; a second polarization state generator (810) positioned to produce a second polarized light from a second waveband of light output by the one or more light sources; an image sensor (822) configured to acquire a sample region (814) by the first polarized light and the second polarized light; a polarization state analyzer (824) disposed between the sample region and the image sensor; a first bandpass filter configured to pass the first waveband of light onto the image sensor; and a second bandpass filter configured to pass the second waveband of light onto the image sensor.