Abstract:
Aspects relate to a spectral analyzer that can be used for biological sample detection. The spectral analyzer includes an optical window configured to receive a sample and a spectral sensor including a chassis having various component assembled thereon. Examples of components may include a light source, a light modulator, illumination and collection optical elements, a detector, and a processor. The spectral analyzer is configured to obtain spectral data representative of a spectrum of the sample using, for example, an artificial intelligence (AI) engine. The spectral analyzer further includes a thermal separator positioned between the light modulator and the light source.
Abstract:
In an optical device, a base and a movable unit are constituted by a semiconductor substrate including a first semiconductor layer, an insulating layer, and a second semiconductor layer in this order from one side in a predetermined direction. The base is constituted by the first semiconductor layer, the insulating layer, and the second semiconductor layer. The movable unit includes an arrangement portion that is constituted by the second semiconductor layer. The optical function unit is disposed on a surface of the arrangement portion on the one side. The first semiconductor layer that constitutes the base is thicker than the second semiconductor layer that constitutes the base. A surface of the base on the one side is located more to the one side than the optical function unit.
Abstract:
The present invention is directed to an Interferometer (100) comprising a source (110) of a primary energy beam (111), a first reflector (120) being provided static such that a first path length from the source (110) to the first reflector (120) is constant, a reflector (1) with an energy beam reflecting surface (20) being provided by an outer surface of a sonotrode (10), wherein the reflector (1) is provided to oscillate such that a second path length from the source (110) to the reflecting surface (20) is variable, a target (140), a means for splitting an energy beam (160) arranged such that it divides the primary beam (111) into a first energy beam (112) incident onto the first reflector (120), and a second energy beam (113) incident onto the reflector (1) adapted to oscillate, and a means for combining energy beams (170) arranged such that it combines a third energy beam (114) reflected from the first reflector (120) and a fourth energy beam (115) reflected from the reflector (1) adapted to oscillate incident onto the target (140). Further provided is an infrared Fourier transform spectrometer (200).
Abstract:
Systems and methods according to exemplary embodiments of the present disclosure can be provided that can efficiently detect the amplitude and phase of a spectral modulation. Such exemplary scheme can be combined with self-interference fluorescence to facilitate a highly sensitive depth localization of self-interfering radiation generated within a sample. The exemplary system and method can facilitate a scan-free depth sensitivity within the focal depth range for microscopy, endoscopy and nanoscopy.
Abstract:
An apparatus for performing Raman spectral analysis of a sample is described, comprising a coherent light source, an first optical chain to direct the coherent light to impinge on the sample, a second optical chain to direct the scattered light onto a diffraction grating, and a third optical chain to direct the diffracted light onto detection array. The diffraction grating is a stairstep with a metalized surface, and a plurality of metalized stripes on a flat surface is disposed in a direction orthogonal to the long dimension of the stairsteps. The region between the flat surface and the stairstep is transparent. The zeroth-order fringe is selected by a slit and directed onto camera. The resultant interferogram is Fourier transformed to produce a representation of the Raman spectrum.
Abstract:
Disclosed is an interferometer comprising a light source, a reflective element, and a photodetector. The light source is configured to emit a light beam, and an angle is formed by inclusion between a direction to which the light beam travels and the reflective element, the photodetector is configured to be substantially perpendicular to the reflective element. The light beam is halved into a first light beam propagating by the included angle, and a second light beam reflected off the reflective element, the first light beam and the second light beam interfere each other to form an interferogram on the photodetector, which detects the interferogram. By benefit of above, the interferometer does not need to reposition its parts in order to make adjustment to interferogram, thereby simplifying optical element setup and minimizing physical volume of the interferomger. Also disclosed is a spectrometer including the same interferometer and a Fourier-transform-capable analyzer.
Abstract:
An optical path of measurement light emitted from a measurement light source is overlaid by a beam combiner on an optical path of reference light emitted from a reference light source. The measurement light emitted from the measurement light source includes light in the sensitivity wavelength range (S1) of a measurement light detector and light in the sensitivity wavelength range (S2) of a reference light detector. An interferometer includes a wavelength separation filter that cuts light in at least a part of the sensitivity wavelength range (S2) of the reference light detector, of light included in the wavelength range of the measurement light.
Abstract:
An interferometer comprising a planar substrate is provided. The interferometer has a splitter formed on the planar substrate to split a received optical signal, a sample arm formed on the planar substrate to receive a first portion of the split optical signal and direct the first portion toward a sample, a reference arm formed on the planar substrate to receive a second portion of the split optical signal, and a detector element to receive an interferogram generated by interfering the second portion of the split optical signal with a received sample signal generated by the first portion of the split signal interacting with the sample.
Abstract:
Micro-spectral sensors and methods are presented in which a Fizeau wedge interference filter is disposed between a focal plane array and a visible scene with an increasing wedge filter dimension varying along a scan direction, where the scene is scanned along the FPA to obtain light intensity measurements of a given scene location at different times using different FPA sensor elements through different wedge filter thicknesses, and the measurements correlated to the given scene location are Fourier transform to generate spectral data for the location.
Abstract:
A transform spectrometer measurement apparatus and method for a planar waveguide circuit (PLC). The spectrometer typically includes an input optical signal waveguide carrying an input optical signal; a plurality of couplers, each connected to the input optical signal waveguide, and each including a coupler output for carrying a coupled optical signal related to the input optical signal; and an array of interleaved, waveguide Mach-Zehnder interferometers (MZI), each having at least one input MZI waveguide, each MZI input waveguide receiving a coupled optical signal from a respective coupler output. A phase shifting circuit is applied to at least one arm of the MZIs to induce an active phase shift on the arm to thereby measure phase error in the MZIs. Light output from the MZIs is measured under intrinsic phase error conditions and after an active phase shift by the phase shifting circuit.