摘要:
Improved photo-masks for use in fabricating periodic structures are disclosed herein. Methods of making periodic structures, as well as the periodic structures fabricated therefrom, are also disclosed. The photo-mask can include a body element and one or more sets of diffractive elements and/or refractive elements disposed on the body element or within the body element. Each set of diffractive elements and/or refractive elements can be configured to produce four non-coplanar beams of light when a beam of light is passed through it. Each set of four non-coplanar beams of light can be used to interferometrically produce a specific periodic structure at a specific location within a photosensitive recording material.
摘要:
Improved optical interconnect devices, structures, and methods of making and using the devices and structures are provided herein. The optical interconnect devices, which can be used to connect components or route signals in an integrated-circuit or circuits, generally include an optical element having a metamaterial with a negative index of refraction. The optical element is configured to receive an optical signal from a first component and transmit the optical signal to a second component. Each interconnect device or structure can be fabricated to have a small size and complex functionalities integrated therein. Other embodiments are also claimed and described.
摘要:
Improved photo-masks for use in fabricating periodic structures are disclosed herein. Methods of making periodic structures, as well as the periodic structures fabricated therefrom, are also disclosed. The photo-mask can include a body element and one or more sets of diffractive elements and/or refractive elements disposed on the body element or within the body element. Each set of diffractive elements and/or refractive elements can be configured to produce four non-coplanar beams of light when a beam of light is passed through it. Each set of four non-coplanar beams of light can be used to interferometrically produce a specific periodic structure at a specific location within a photosensitive recording material.
摘要:
Systems and methods of measuring birefringence or retardation are provided. For some embodiments, a system is provided, which comprises a polarizer, an analyzer, a first waveplate, and a second waveplate. The system is configured to obtain light intensity measurements by recursively rotating the second waveplate. The obtained light intensity measurements are retrieved, and a light transmission intensity curve is determined from the light intensity measurements.
摘要:
A numerical optical processor which utilizes a holographic content-addressable memory is disclosed. The holographic memory stores relationships between various inputs and system outputs in the form of a plurality of truth tables in a digital format. One or more digital input words are processed by the numerical optical processor to produce digital outputs wherein the input words are modified by the contents of the holographic memory.Two configurations of the numerical optical processor are disclosed. The first system is based on an EXCLUSIVE OR operation performed holographically on binary arrays. The second system performs an operation which is equivalent to two levels of logic: a NAND and OR followed by another OR operation. Various specific embodiments of the two configurations are disclosed.
摘要:
Some embodiments include a system having a polarizer and an analyzer to define a light transmission axis. Both the polarizer and the analyzer have a polarization transmission direction, which is substantially perpendicular to the light transmission axis. A first waveplate and a second waveplate are is interposed between the polarizer and the analyzer, such that both waveplates are located along the light transmission axis. Both waveplates have a slow axis, which is substantially perpendicular to the light transmission axis. The first waveplate is rotated about the light transmission axis, such that the slow axis of the first waveplate is at an angle with a polarization transmission direction of the polarizer. The analyzer is rotated about the light transmission axis until the light transmitted through the system is minimized. The first waveplate and the analyzer are recursively rotated until an extinction angle is determined.
摘要:
Embodiments of the present disclosure provide systems and methods for constructing a profile of sample object. Briefly described, in architecture, one embodiment of the system, among others, can be implemented as follows. An interferometer device is used to collect interference images of a sample object at a sequence of angles around the sample object. Accordingly, a controller device rotates the sample object to enable acquisition of the interference images; and a projection generator produces projections of the sample object from the interference images at the sequence of angles. Further, a tomographic device constructs the profile of the optical device from the projections of the interference images. The profile is capable of characterizing small index variations of less than 1×10−4. Other systems and methods are also included.
摘要:
An exemplary embodiment of the present invention provides an interference projection exposure system comprising a beam-providing subsystem and an objective lens subsystem that can provide a plurality of light beams which intersect and interfere at an image plane to produce a high spatial frequency periodic optical-intensity distribution. The interference projection system can further comprise a pattern mask that can alter the periodic optical-intensity distribution so as to incorporate functional elements within the periodic optical-intensity distribution. The beam providing subsystem can comprise a beam generating subsystem, a beam conditioning subsystem and a beam directing subsystem. Another exemplary embodiment of the present invention provides for a method of producing a high spatial frequency periodic optical-intensity distribution using a interference projection exposure system.
摘要:
An exemplary embodiment of the present invention provides a diffractive photo-mask comprising a body element, a plurality of interference/image-forming hologram gratings, and a zero-order beam blocking element. The plurality of interference/image-forming hologram gratings can be located on or in the body element. The plurality of interference/image-forming hologram gratings are configured to diffract a light beam to produce one or more functional elements surrounded by a high-spatial-frequency periodic optical-intensity distribution at a substrate plane when the light beam is incident upon the diffractive photo-mask. The zero-order beam blocking element is configured to block zero-order diffracted beams when the light beam is incident upon the diffractive photo-mask