An optical array waveguide grating-type multiplexer and demultiplexer according to an embodiment of the present invention comprise: a first substrate, a plurality of first waveguides disposed on the first substrate to be superposed in the vertical direction, which is the thickness direction of the first substrate; a 1-1st cladding layer disposed between the first substrate and a 1-1st waveguide, which is nearest to the first substrate among the plurality of first waveguides; a 1-2nd cladding layer disposed between the plurality of first waveguides; and a 1-3rd cladding layer disposed on a 1-2nd waveguide, which is furthest from the first substrate among the plurality of first waveguides.

A system for performing spectroscopy on a target is provided. In some aspects, the system includes an optical assembly that includes an optical source configured to generate light at one or more frequencies to be directed to a target. The optical assembly also includes at least one optical filter configured to select desired light signals coming from the target, wherein the at least one optical filter comprises an etalon and at least one reflecting surface external to the etalon, the at least one reflecting surface being configured to redirect to the etalon, at least once, an incident beam reflected from the etalon.

In multiplex CARS, a fingerprint region is a region where signals are densely concentrated. Information about the intensities and spatial distribution of these signals is important in cell analysis. However, there has been a problem in that the signal intensities are low. Accordingly, mechanisms 702 and 703 for adjusting the power branching ratio between light that enters a photonic crystal fiber 705 and pumping light; mechanisms 710 and 711 for adjusting the divergence/convergence state of the pumping light; and mechanisms 706 and 2101 for adjusting the divergence/convergence state of Stokes light are provided to enable adjustment for emphasizing a desired wavelength band.

System (100) for measuring the spatial distribution of the spectral emission of a measurement zone (2) of an object (1), comprising: a first objective (202); means (204) for selecting a portion of an image formed by the first objective; a diaphragm (208); light-dispersing means (210) located in the vicinity of the diaphragm and allowing the light coming from the selecting means to be dispersed; a second objective (206) placed between the selecting means and the diaphragm, interacting with the first objective so that the aperture of the diaphragm is optically conjugated with the measurement zone by the first and second objectives and so that the measurement zone. According to the invention, the first objective forms an image on a predetermined Fourier surface on which each point corresponds to an emission direction of the object for one particular wavelength, the selecting means have a selection surface shaped depending on the predetermined Fourier surface, and the selecting means are placed on the predetermined Fourier surface.

The present disclosure provides Raman spectrum detection apparatus and method. The Raman spectrum detection apparatus includes: a laser configured for emitting excited light; an optics assembly configured to guide the excited light along a first light path to a sample to be detected and to collect a light signal from the sample along a second light path; and a spectrometer configured to process the light signal collected by the optics assembly so as to generate a Raman spectrum of the detected sample. The optics assembly includes a first optical element configured to move, during irradiation of the excited light onto the sample, so as to change a position of a light spot of the excited light on the sample.

A light detection device includes a package including a window, a Fabry-Perot interference filter for transmitting light incident from the window in the package, and a light detector for detecting the light transmitted by the Fabry-Perot interference filter in the package. The Fabry-Perot interference filter includes: a substrate having a first surface on the window side and a second surface on the light detector side; a first layer structure arranged on the first surface, the first layer structure having a first mirror and a second mirror; and a lens unit integrally formed on the second surface side, the lens unit for condensing the light transmitted by the first mirror and the second mirror onto the light detector.

An optical detecting device includes a receiving box and a telescopic arm. The receiving box includes an electrical connection port and a first conductive portion electrically connected to the electrical connection port. The telescopic arm is slidably disposed in the receiving box and includes an optical sensor and a second conductive portion electrically connected to the optical sensor. When the telescopic arm and the receiving box are in different sensing positions, the first conductive portion is electrically connected to the second conductive portion.

A spectrometer apparatus is disclosed. The apparatus may include light source and the light source may include a chamber for sustaining a plasma within the internal volume of the chamber. The apparatus may also include a spectrometer cavity and a windowless entrance slit. The windowless entrance slit may fluidically and optically couple the spectrometer cavity and the internal volume of the chamber of the light source. Further, the apparatus may include a diffractive element disposed within the spectrometer cavity and a window positioned at an opposite end of the spectrometer cavity from the windowless slit. The apparatus may also include a camera and a spectrometer.

An embodiment of a system is described that comprises a light source configured to produce a light beam; a collimating lens disposed on a movable mount, wherein the collimating lens is configured to capture the light beam and produce a substantially collimated beam; and an aspheric diffuse ring optic configured to receive the collimated beam and produce a spot on a surface that comprises a non-uniform radial intensity distribution.

A system and method include receiving target image data associated with a target coating. A texture feature extraction analysis process is applied to the target image data to determine a target texture image feature. A machine learning model identifies one or more texture features for matching to a target coating.