6 results about "Optical resonance" patented technology

The invention relates to a measurement system (10) of the MEMS and / or NEMs type comprising: a resonant assembly (RE) comprising a plurality of N indexed OMRi resonators i, at least one resonant mechanical element MEij coupled to each OMRi resonator, and at least one waveguide (WG) to which the optical resonators are coupled, an emission device (ED), an injection device (ID), each OMRi resonator of the resonant assembly being further configured to be excited at a mechanical excitation frequency (fex / o(i)) and to modulate the light beam associated with said first excitation frequency (fex / o(i)), a resonant mechanical element (MEij) being configured to be excited at a mechanical excitation frequency (fex / e(i,j)) and to modify an optical transmission or reflection in the vicinity of the optical resonance of said associated resonator, said modification being a function of a physical quantity (u) to be measured,at least one detector (Det) and a demodulation device (DDM) comprising a plurality of synchronous detection demodulation modules (11), referred to as LIA. Figure 11,

This invention relates to the field of atmospheric trace gas detection technology, specifically disclosing an ultra-high sensitivity online detection system and method for atmospheric BrO radicals. The ultra-high sensitivity online detection system for atmospheric BrO radicals includes an optical cavity, a 340 nm ultraviolet light source, an ultraviolet optical fiber, an ultraviolet spectrometer, and a sampling unit. The optical cavity has an inlet and an outlet, and contains an ultraviolet optical resonance region. Ultraviolet light emitted from the ultraviolet light source is reflected multiple times in the ultraviolet optical resonance region and then transmitted into the ultraviolet optical fiber. The ultraviolet optical fiber is used to superimpose all transmitted light in the ultraviolet band and transmit it to the ultraviolet spectrometer. The sampling unit is used to directly input the gas to be measured into the optical cavity, or to selectively remove BrO radicals from the gas to be measured before inputting it into the optical cavity. This invention achieves ultra-high sensitivity online point detection of BrO radicals in the atmosphere. Compared with existing technologies at home and abroad, its BrO detection limit is better than 1 pptv, reaching the sub-pptV level, demonstrating excellent detection performance.

A system for generating light radiation to neutralize microorganisms comprises a light source for emitting a light radiation, storage means with one or more unique identification codes, each of which is associated with a respective microorganism, and at least one respective wavelength range associated with said microorganism, and a logic control unit. The logic control unit is configured to select a wavelength range based on the microorganism to be neutralized, activate the light source in such a way that light radiation emitted by said light source has a wavelength within said selected wavelength range, so that, when the system is in use, the light radiation induces optical resonance in the microorganism, causing denaturation of genetic patrimony of the microorganism.

The present invention provides a photonic crystal resonator capable of improving the Q value by suppressing overlap between a p-type doping region and an optical resonance mode. The photonic crystal resonator according to the present disclosure comprises a thin film, an active layer embedded in the thin film, and holes periodically disposed in the thin film. The thin film further includes both a p-type doping region adjacent to the active layer and distributed in a trapezoidal shape with respect to the direction of current applied to the active layer, and an n-type doping region distributed in a trapezoidal shape at a position opposite to the p-type doping region. With respect to an array of holes in a region on one side when the center line of the photonic crystal resonator with respect to the direction of the current is defined as a boundary, the array of holes in the region on the opposite side is configured to be an array that is horizontally-shifted in a direction orthogonal to the direction of the current by a distance of 0.1 to 0.5 times a lattice constant.

A stretchable photonic crystal panel, wherein the panel exhibits a percentage change of the optical resonance wave of less than 0.2%, standardized to the percentage stretch. The stretchable photonic crystal panel includes a stretchable substrate layer (1) and a nanostructured waveguide layer (2), wherein the waveguide layer (2) has polygonal portions (3), which are delimited by stretch channels (4), and wherein the polygonal portions (3) have a size between 2 μm and 1 mm.

In certain examples, an apparatus comprising: a chamber to provide wastewater; a power supply to provide electric field energy: and an optically-responsive material in the wastewater to respond to the field energy. The optically-responsive material (e g., nanomaterial(s) and / or metasurface(s)) are designed to respond to the field energy by causing light signals that scatter from targeted bacteria to be highlighted so as to distinguish the light signals from light due to non-targeted contaminants. In more-specific examples: electrokinetic trapping increases the highlighting for differentiating targeted bacteria; the targeted bacteria is label-free bacteria; the material is optically resonant; the electric field energy is dielectrophoresis field energy; and / or the optically-responsive material include particles each of which is characterized, in part, by a physical structure having one or more subwavelength dimensions, by causing light to concentrate on membranes of the targeted bacteria.