15 results about "Optical interaction" patented technology

A semiconductor laser (1) comprising a semiconductor body (2) with an active region (20) for generating radiation (8) and an optical interaction structure (3) with structural elements (30) is specified, wherein at least some of the structural elements (30) are arranged at different nominal center distances (35) to each other such that, during operation of the semiconductor laser (1) at a given operating point, local temperature differences in the optical interaction structure (3) reduce differences between the optical path lengths (39) that are assigned to the nominal center distances (35) of these structural elements (30). Furthermore, a method for manufacturing a semiconductor laser (1) is described.

This invention discloses a 3D grating UV high-precision alignment printing method and printer, belonging to the field of UV printing. The method includes: S100, using a grating ruler with quartz glass as the substrate and an optical positioning accuracy of 0.1μm as the core positioning element in the UV printer; S200, placing the transparent grating image core on the printing platform, and converting the grating cylinder into a black and white line pattern recognizable by machine vision through the optical interaction between the grating ruler and the transparent grating image core; S300, activating the machine vision recognition system to capture the black and white line pattern, identifying and positioning each transparent grating cylinder; S400, the vision system detects the direction of the black and white line pattern to determine the tilt, identifies the positions of the black lines at both ends of the same cylinder, calculates the tilt angle, and automatically corrects it by the motion control system; S500, controlling the printing carriage to move along the correction path to perform UV curing and precise alignment printing of the transparent grating image core. This invention can improve the machine vision recognition accuracy of the printer equipment and achieve a high degree of matching with the grating image core.

The invention belongs to the technical field of service performance of aero-engine titanium alloy parts, and provides a method and system for calculating the thickness of a titanium alloy ultrathin oxide film through high-temperature color, and the method comprises the steps: carrying out the applicability detection of a surface target region of a titanium alloy part after high-temperature service; for the titanium alloy which passes the applicability detection, the reflection spectrum of the high-temperature color on the surface of the titanium alloy is obtained through a colorimeter, and a warning signal is output for the titanium alloy which does not pass the applicability detection; extracting a wavelength corresponding to the lowest point of reflectivity from the reflection spectrum as a strong absorption wavelength; based on the optical interaction between the oxidation film and the titanium alloy substrate, the quantitative relation between the oxidation film thickness and the strong absorption wavelength is established, and the oxidation film thickness is calculated by adopting the quantitative relation through the strong absorption wavelength. The method realizes rapid and non-contact oxidation film thickness measurement, is suitable for on-site detection of key components on an aero-engine, and has the advantages of high precision, low cost and easy operation.

The present disclosure relates to a high voltage (HV) apparatus comprising: at least one HV element; at least one optical fiber mounted within the HV region; and at least one sensing fiber, each sensing fiber comprising at least one temperature sensitive portion, where the at least one sensing fiber is routed into the HV region together with the at least one mounting fiber and arranged within the HV region such that the at least one temperature sensitive portion is arranged to sense a temperature associated with the element of interest, the at least one sensing fiber is optically connectable to the temperature sensing arrangement for determining a temperature associated with the element of interest based on light interaction with the at least one temperature sensitive portion of the at least one sensing fiber. A method of installing a sensing fiber in an HV equipment and a method of monitoring temperature in a high voltage HV equipment by a temperature sensor arrangement are also disclosed.

An automatable manufacturing facility being based on optical interactions, in particular a manufacturing facility for Selective Laser Melting processes (“Selective Laser Melting”, SLM), and an integrable analysis device which, by optical detection and analysis of an object plane allocated in the manufacturing facility, is configured to determine the state of deterioration, ageing and / or contamination of one or more protective glasses integrated in the manufacturing facility. In addition, a manufacturing system for automatic manufacturing of a workpiece based on optical raw material irradiation, wherein the manufacturing system is, by means of signal exchange between the manufacturing system and the integrated analysis device, capable of assessing the state and / or remaining lifespan of a corresponding protective glass.

The present invention relates to an automatable manufacturing facility FA based on optical interactions, in particular a manufacturing facility for selective laser melting (SLM), and an integrated filter device FV, which, by selective insertion of the device elements, makes it possible to avoid contamination with different particle residues in the manufacturing facility FA and to form a manufacturing atmosphere defined by a homogeneous process gas flow.Furthermore, the present invention relates to a manufacturing system for the automated manufacturing of workpieces by irradiation of the material to be processed, which manufacturing system makes it possible to generate the aforementioned manufacturing atmosphere, in particular independently of the manufacturing material used, by means of controlled adaptation of the process gas introduced into the manufacturing facility FA to the properties of the filter device FV.

The invention relates to a photonic system and method for frequency conversions of incoming laser pumps comprising a first laser source generating a first laser pump, a second laser source generating a second laser pump, a first waveguide, optional a second waveguide, an optical combiner and an input coupler, wherein the waveguides and the optical combiners are integrated into a compact platform, the first waveguide frequency convert the first and second laser pumps to generate a frequency converted signal. Phase shifting means are arranged to phase shift one or more of the first laser pump, the second laser pump and / or the frequency converted signal. The first waveguide generates an output signal, which is a modulated frequency converted signal by optical interaction in the first waveguides between the pumps and signals progressing in the first waveguide.

The invention relates to a semiconductor laser (1) comprising a semiconductor body (2) having an active region (20) for generating radiation (8) and an optical interaction structure (3) having structure elements (30), wherein at least some of the structure elements (30) are arranged at mutually different nominal center-to-center distances (35) from one another in such a way that, during operation of the semiconductor laser (1) at a specified operating point, local temperature differences in the optical interaction structure (3) reduce differences between the optical path lengths (39) associated with the nominal center-to-center distances (35) between said structure elements (30). The invention furthermore relates to a method for producing a semiconductor laser (1).

An optical component includes a calcium fluoride substrate including an atomically-smooth substrate surface forming at least a portion of an optical interaction surface, and an encapsulant layer covering the atomically-smooth substrate surface forming a smooth interface between the calcium fluoride substrate and the encapsulant layer. A profile roughness parameter Ra of the atomically-smooth substrate surface is in a range from 0.01 nanometers (nm) to 0.17 nm, inclusive, the profile roughness parameter Ra being defined as an average deviation of a profile of the atomically-smooth substrate surface.

An optical fluid sensor is disclosed, wherein the optical fluid sensor comprises, integrated into a common chip:a substrate;an optoelectronic active material stack intended to be exposed to a fluid or to an intermediate element exposed to said fluid or to said intermediate element exposed to said fluid;a polaritonic launcher to, upon illumination, launch polaritons into the optoelectronic active material stack to propagate there across; andcircuitry in electrical contact with an electrically active material structure of the stack.The optoelectronic active material stack is configured and arranged so that the polaritons optically interact with one or more molecular vibrational modes of the fluid, and the circuitry together with the electrically active material structure are configured and arranged to sense the fluid by transducing those optical interactions into an electrical signal.An optical fluid sensor arrangement, such as an array, comprising a plurality of the optical fluid sensors of the invention is also disclosed.

The invention provides a vacuum-tight enclosure for a beam apparatus, a beam apparatus, and a method for manufacturing a vacuum-tight enclosure. The vacuum-tight enclosure is essentially formed of:a beam input interface for receiving a molecular or atomic beam,a first optical interaction volume,a microwave cavity comprising a U-shaped portion,a second optical interaction volume,a straight hollow beam enclosure for enclosing the molecular or atomic beam between the first optical interaction volume and the second optical interaction volume,anda vacuum source interface, anda plurality of optical port interfaces,such that a vacuum is generatable within the vacuum-tight enclosure when a vacuum source is vacuum-tightly attached to the vacuum source interface, a beam source container is vacuum-tightly attached to the beam input interface and the plurality of optical port interfaces are vacuum-tightly sealed.

An intravascular device (10) is disclosed. The device includes an elongated member (20), an optical fiber (30), and at least one optical interaction element (40). At least a portion of the elongated member is configured to be inserted into a portion of a patient's vasculature. At least a portion of the optical fiber is located within the elongated member. The optical fiber is configured to transmit optical wavelength radiation. The intravascular device is configured to emit the optical wavelength radiation out of the elongated member in at least two beams of radiated light to be scattered and / or reflected by the portion of the vasculature. The emission of the at least two beams of radiated light includes an interaction of the transmitted optical wavelength radiation with the at least one optical interaction element. The intravascular device is configured to collect at least some of the scattered and / or reflected optical wavelength radiation and couple the at least some of the scattered and / or reflected optical wavelength radiation into the optical fiber, including utilization of the at least one optical interaction element.

The invention relates to a high-power electro-optical modulator, and belongs to the technical field of lithium niobate electro-optical modulators, the high-power electro-optical modulator comprises a substrate, a waveguide, a traveling wave electrode and a matching circuit, the matching circuit comprises a matching electrode, a load resistor and a gold wire, and the traveling wave electrode and the matching electrode are of a coplanar waveguide structure. And a signal electrode of the traveling wave electrode is connected with a signal electrode of the matching electrode through a gold wire. The traveling wave electrode turns at the tail end of the waveguide, microwave loss is increased by increasing the length of the traveling wave electrode, microwave energy reaching a microwave matching resistor at the output end of the traveling wave electrode is reduced, and the microwave energy is reduced under the conditions that the length of an electro-optical interaction area of the electrode and the waveguide is kept unchanged and the bandwidth performance of the device is not affected. And the length of the electrode on the chip is greatly increased, so that the bearing capacity of the modulator on high-power microwave input is greatly improved.

According to the electro-optical modulator based on the thin-film lithium tantalate and the preparation method of the electro-optical modulator, a waveguide structure of a submicron size is designed on a thin-film lithium tantalate platform and heterogeneous integration is carried out on the waveguide structure and a gallium nitride chip, on one hand, due to the fact that an optical mode field spot of a blue-green light wave band is small, the light field spot is small; on one hand, a light field is ensured to be completely bound in the thin-film lithium tantalate waveguide for single-mode transmission, multi-mode interference is effectively avoided, on the other hand, the wide optical band gap of lithium tantalate enables blue-green light wave bands to have high transmittance, so that optical transmission loss can be reduced, the transmission distance and transmission efficiency of underwater visible light communication can be improved, and in addition, the transmission efficiency of underwater visible light communication can be improved. The efficiency of strong electro-optical interaction can also be improved by controlling the size of the electrode gap, so that high modulation efficiency can be realized under low driving voltage, and the lithium tantalate crystal has weaker optical anisotropy, so that the influence of polarization state change caused by an underwater severe environment on communication quality can be effectively inhibited, and the communication quality is improved. And the environmental adaptability and reliability of the electro-optical modulator are improved.

The present invention relates to an automatable manufacturing facility FA based on optical interactions, in particular a manufacturing facility for selective laser melting (SLM), and an integrated filter device FV in which, by selective insertion of device elements, both contamination by different particle residues within the manufacturing facility FA can be avoided and a manufacturing atmosphere defined by a homogeneous process gas flow can be formed. Furthermore, the present invention relates to a manufacturing system for automated manufacturing of workpieces by means of irradiation of a material to be processed, which, with the aid of controlled adaptations of the process gas to be introduced into the manufacturing facility FA to the properties of the filter device FV, enables the previously described generation of the manufacturing atmosphere, in particular independently of the manufacturing materials used.