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7630081 |
Interferometer maintaining optical relationship between elements
An interferometer for Fourier transform infrared spectroscopy includes a fixed assembly including a housing, a beam splitter, and a mirror fixedly positioned relative to each other. A movable...
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7629166 |
Measuring apparatus for interaction of biomolecule
In a measuring apparatus for biomolecule interaction, a fine particle sensor surface is dipped in a buffer solution in a reaction vessel to conduct spectral measurement by way of optical fibers....
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7619742 |
High-speed spectrographic sensor for internal combustion engines
A high-speed absorption spectrographic system employs a slit-less spectroscope to obtain high-resolution, high-speed spectrographic data of combustion gases in an internal combustion engine...
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7616319 |
Spectroscopic ellipsometer and polarimeter systems
A rotating compensator spectroscopic ellipsometer or polarimeter system having a source of a polychromatic beam of electromagnetic radiation, a polarizer, a stage for supporting a material system,...
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7609383 |
Optical spectrum analyzer
An optical spectrum analyzer detects a light output that is dependent on the frequency of light in a wavelength range of light to be measured. The optical spectrum analyzer includes a waveguide...
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7595887 |
Multigas monitoring and detection system
A spectroscopic detection system is described for monitoring ambient air for toxic chemical substances. The system can be a compact, portable multiple gas analyzer capable of detecting and...
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7595886 |
Wavelength monitor using interference signals
A wavelength monitor includes the following elements. An optical divider divides a beam of measured light into first and second divided beams of measured light. An interfering element converts the...
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7593112 |
Systems and methods for comparative interferogram spectrometry
A system for comparative interferogram spectrometry includes an interferometer configured to generate interferograms from incident radiation from a target region, an interferogram database...
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7586618 |
Distinguishing non-resonant four-wave-mixing noise in coherent stokes and anti-stokes Raman scattering
A method of examining a sample comprises exposing the sample to a pump pulse of electromagnetic radiation for a first period of time, exposing the sample to a stimulant pulse of electromagnetic...
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7573577 |
Spatial heterodyne wide-field Coherent Anti-Stokes Raman spectromicroscopy
Methods for chemically-resolved optical microscopy are presented. The methods can provide a wide-field, spatial interference imaging using multiple nonlinear scattering channels to produce...
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7564561 |
Method of optical frequency measurement
A method of absolute optical frequency measurement is realized by using mode-locked laser frequency combs to measure the optical frequency of an unknown laser. By varying the repetition frequency,...
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7564560 |
Spectrophotometer with wide inlet slit
A spectrophotometer incorporating an interferometer and a dispersive system is adapted to have an enlarged inlet field without degrading its spatial resolution. To this end, spectral data deduced...
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7557928 |
Apparatus using optical coherence tomography based on spectral interference, and an ophthalmic apparatus
An apparatus using optical coherence tomography based on spectral interference and an ophthalmic apparatus, which can accurately obtain information on an object in a depth direction by correcting...
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7535572 |
Compression assembly of spatial heterodyne spectrometer (SHS)
The present invention provides an economically feasible robust spatial heterodyne spectroscopy (SHS) interferometer. A first type prior art monolithic SHS interferometer is exceedingly expensive,...
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7535004 |
Fourier transform infrared spectrophotometer
Disclosed is a Fourier transform infrared spectrophotometer, which comprises: a main interferometer section including a beam splitter, a fixed mirror, a movable mirror, and a phase plate disposed...
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7522786 |
Transmitting light with photon energy information
In detection and sensing, light is transmitted through layers or structures that vary laterally, such as with a constant gradient or a step-like gradient. After transmission, a position of a...
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7505135 |
Method and apparatus for imaging through scattering or obstructing media
Method and system for determining the optical temporal response of a medium ( 12 ) to a short optical pulse excitation, by sending light ( 11 ) that comprises spectral frequencies which make up the...
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7502118 |
High sensitivity coherent photothermal interferometric system and method for chemical detection
A photo-thermal interferometric spectroscopy system is disclosed that provides information about a chemical at a remote location. A first light source assembly is included that emits a first beam....
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7479966 |
Method and apparatus for super montage large area spectroscopic imaging
The disclosure relates to Method and Apparatus for Super Montage Large area Spectroscopic Imaging. In one embodiment of the disclosure, a method for producing a spectroscopic image of an object...
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7466929 |
Method and system for superheterodyne detection of an optical input signal
A system and method for superheterodyne detection in accordance with the invention. The system comprises a first conversion unit for performing a first heterodyne operation on an optical input...
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7466421 |
Diffractive interferometric optical device for measuring spectral properties of light
A diffractive interferometric optical device is provided for measuring spectral properties of light. The device includes means for coupling in a single spatial mode of an incoming light field to be...
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7457721 |
Method and apparatus for measuring small displacement
Without using an interferometer, small displacement and/or three-dimensional shape of an object is detected in a noncontact way with high accuracy using pseudo-phase information calculated from...
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7450241 |
Detecting vulnerable plaque
An apparatus and associated method for detecting vulnerable plaque within a lumen defined by an intraluminal wall is described. The apparatus includes a probe having a distal portion and a proximal...
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7450239 |
Optical pulse evaluation device and in-service optical pulse evaluation device
An optical pulse evaluation device and an in-service optical pulse evaluation device is disclosed which are capable of characteristics evaluation of an optical pulse itself or a sample launched...
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7450238 |
Device and method for spectrally resolving detection of a sample
Disclosed are an array and a method for the spectrally resolving detection of a sample ( 22 ) that is illuminated by means of an illuminating radiation ( 12 ) by detecting a sample radiation ( 24 )...
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7446878 |
Method and apparatus for improvement of spectrometer stability, and multivariate calibration transfer
The present invention provides methods and apparatuses that can improve measurement accuracy in interferometers. The invention provides methods for determining digital compensation filters that...
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7446877 |
All-fiber spectroscopic optical sensor
A spectroscopic sensor apparatus based on an all optical fiber platform includes a light source, a sensor head, and a fiber acousto-optic tunable filter (FAOTF) based spectrometer. The target agent...
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7443512 |
Apparatus and method for measurement of film thickness using improved fast fourier transformation
The present invention relates to an apparatus and method for a measurement of a film thickness using an improved fast Fourier transformation. The apparatus includes a light source, a light...
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7440107 |
Sampling spectrophotometer comprising an interferometer
A sampling spectrophotometer comprising an interferometer is used for performing a spectral analysis of light produced by a source. The sampling is adapted for eliminating uncertainty in the...
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7436518 |
Restoration of Fizeau FTS spectral data using low and/or zero spatial resolution Michelson FTS data
A Fourier Transform Spectrometer (“FTS”) system includes a Fizeau FTS having a plurality of sub-collecting elements, adjacent ones of which are separated by a gap distance, and at least one of...
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7436517 |
Optical measuring apparatus
Excitation light is inputted to an optical element with uniformly dispersed inorganic fluorescent nanoparticles whose radius is controlled. Fluorescence is emitted from the inorganic fluorescent...
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7433552 |
Obtaining analyte information
Light, such as from an analyte-wavelength converter or other optical sensor, is propagated to a detector or transmission structure with an entry surface and with output positions such as in an exit...
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7433044 |
Sagnac fourier transform spectrometer having improved resolution
A Fourier transform spectrometer based on a modified Sagnac interferometer is described. The instrument uses one or more gratings as dispersive elements to greatly improve the spectral resolution,...
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7426035 |
System and method for chemical sensing using trace gas detection
A system and method is proposed for chemicals detection such as explosives and others, which are based on sensing of trace gases associated with the chemical. This sensing includes detection of...
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7423760 |
Method and apparatus for monitoring an interferometer
An apparatus and to a method of monitoring an interferometer, comprising the steps of: coupling a first optical signal into the interferometer and into a wavelength reference element, detecting a...
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7411684 |
Film thickness measuring method of member to be processed using emission spectroscopy and processing method of the member using the measuring method
A system including: a film thickness measuring apparatus for measuring a film thickness of a member to be processed, including: a differential waveform pattern data base for holding a standard...
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7399975 |
Method and apparatus for performing highly accurate thin film measurements
A reflectometer data reduction technique is provided that utilizes a ratio of an expected reflectance spectrum of the sample being measured to the actual reflectance spectrum of the sample being...
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7391557 |
Mobile terawatt femtosecond laser system (MTFLS) for long range spectral sensing and identification of bioaerosols and chemical agents in the atmosphere
The present invention relates to a system for detection and identification of airborne biological, chemical and/or nuclear threats such as toxins, spores, bacteria, and viruses in real time at...
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7391519 |
Generation of spatially distributed spectral data using a multi-aperture system
Detecting the presence of a target material in a scene by using a multi-aperture interferometer system having a plurality of apertures at least one of which has an adjustable optical path length,...
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7388673 |
Heterodyne optical spectrum analyzer
A heterodyne optical signal analyzer (HOSA) permits accurate reconstruction of an optical input signal (Es) in the time domain. In one embodiment, a vector representation of the light is used to...
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7388668 |
Phase sensitive heterodyne coherent anti-Stokes Raman scattering micro-spectroscopy and microscopy
A system is disclosed for detecting a non-linear coherent field induced in a sample volume. The system includes a first source for generating a first electromagnetic field at a first frequency, a...
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7387892 |
Biosensor using microdisk laser
A compact sensor for detecting the presence of biological or chemical species includes a microdisk laser and a wavelength shift detector. The microdisk laser is coated with a biological or chemical...
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7379672 |
Photonic RF distribution system
The present photonic RF generation and distribution system provides a system and method for distributing an RF output signal. The photonic RF distribution system includes two optical sources for...
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7372577 |
Monolithic, spatially-separated, common path interferometer
Spatially-separated heterodyne interferometer architecture is combined with monolithic glass construction techniques to provide a monolithic, spatially-separated, common-path interferometer. The...
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7372573 |
Multigas monitoring and detection system
A spectroscopic detection system is described for monitoring ambient air for toxic chemical substances. The system can be a compact, portable multiple gas analyzer capable of detecting and...
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7359060 |
Multi-mode sampling probes
An optical probe for use in infrared, near infrared, Raman, and other spectrometers includes a probe outer surface with a cavity defined therein. The probe emits light into a sample via emission...
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7359057 |
Method and apparatus for measuring small shifts in optical wavelengths
A method and apparatus for detecting small shifts in optical wavelength is provided. Light having a known wavelength is directed towards a target volume in the atmosphere. Light reflected from the...
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7355713 |
Method for inspecting a grating biochip
A method for inspecting a grating biochip comprises the steps of irradiating a grating biochip using a light beam, measuring a diffracted light using a photodetector, selecting a plurality of...
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7352469 |
Quantum resonance analytical instrument
Quantum resonance fluorescent microscope systems for detecting component substances in a specimen are described. The systems are based on exciting the sample containing the material with a...
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7333207 |
Confocal 4-pi microscope and method for confocal 4-pi microscopy
The invention relates to a confocal 4π microscopy method which is characterized by coherently illuminating a sample from two sides by one objective each with illumination light which has at least...
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