This invention addresses the abovementioned problem, and the purpose of this invention is to provide a far-infrared spectroscopy device that uses an is-TPG method to generate far-infrared light, and is capable of efficiently detecting is-TPG light without a detection optical system being fine-tuned. Even if the far-infrared light incidence angles on an Si prism for detection are the same when far-infrared light having a first frequency is incident on a non-linear optical crystal for detection and when far-infrared light having a second frequency is incident on the non-linear optical crystal for detection, this far-infrared. spectroscopy device adjusts the incidence surface angle of pump light in relation to the non-linear optical crystal for detection such that the angle of the far-infrared light in relation to the pump light within the non-linear optical crystal for detection can be appropriately set for each far-infrared light frequency (see FIG. 1A).

A method and system for detecting an aflatoxin on a grain, seed or nut which includes sorting a plurality of the grain seeds in single file, capturing a plurality of shortwave infrared images of each seed, comparing the wavelengths from the captured image with the wavelengths indicative of an aflatoxin presence at a predetermined concentration, and ejecting from a group of the seeds those seeds that have an aflatoxin concentration greater than the predetermined concentration as indicated by the wavelengths from the captured images.

Provided is a resin panel enabling an infrared sensor to fully function when the resin panel is applied as a protective cover to the infrared sensor. The resin panel comprises at least a core layer and has a light transmittance at a wavelength of 905 nm of 85% or more and a visible light transmittance of 20% or less.

A light frequency standard for use as an optical clock is disclosed that is improved by optical pumping. Optical pumping is utilized to change the ground states of the atomic vapor from transition forbidden to transition allowed ground states involved in two-photon absorption process. The added element of an optical pump increases the absorbers available in the two-photon process and creates a stronger absorption line signal used for locking the laser to an absolute frequency.

An optical spectrometer based upon two-photon absorption is disclosed that is improved by optical pumping. In this case, two optical pumps are used, One optical pump provides photons for two-photon absorption, but it also depletes absorbing atoms that are in ground states where two-photon absorption is allowed. The other optical pump replenishes the supply of absorbing atoms into ground states allowing two-photon absorption. The spectrometer is useful for measuring Doppler shift with LIDAR.

A light frequency standard for use as an optical clock is disclosed that is improved by optical pumping. Optical pumping is utilized to change the ground states of the atomic vapor from transition forbidden to transition allowed ground states involved in two-photon absorption process. The added element of an optical pump increases the absorbers available in the two-photon process and creates a stronger absorption line signal used for locking the laser to an absolute frequency.

An optical spectrometer based upon two-photon absorption is disclosed that is improved by optical pumping. In this case, two optical pumps are used, One optical pump provides photons for two-photon absorption, but it also depletes absorbing atoms that are in ground states where two-photon absorption is allowed. The other optical pump replenishes the supply of absorbing atoms into ground states allowing two-photon absorption. The spectrometer is useful for measuring Doppler shift with LIDAR.

Spectral analysis system for capturing a spectrum with an optic that forms an optical path. The spectral analysis system is configured to apply a correction function to a captured spectrum so as to obtain a modified spectrum.

Spectral analysis system for capturing a spectrum with an optic that forms an optical path. The spectral analysis system is configured to apply a correction function to a captured spectrum so as to obtain a modified spectrum.

A Raman sensor includes a light source assembly having a plurality of light sources configured to emit light to a plurality of skin points of skin, each of the plurality of skin points having a predetermined separation distance from a light collection region of the skin from which Raman scattered light is collected; a light collector configured to collect the Raman scattered light from the light collection region of the skin; and a detector configured to detect the collected Raman scattered light.

The present invention provides a fiber laser system, comprising: a master laser cavity for generating a master laser beam; a beam splitter for splitting the master laser beam into a first beam for generating a first color pulsed laser beam and a second beam for generating a second color pulsed laser beam; and a synchronization component configured to synchronize the first color pulsed laser beam and a second color pulsed laser beam based on coherent wavelength generation.

A method of calibrating an imaging device adapted to characterize a feature of a sample container, such as a cap color or cap type. The method includes providing a calibration tube including an imaging surface at an imaging location of a first imaging apparatus; illuminating the imaging surface with light emitted from multiple front light sources; adjusting a drive current to each of the multiple front light sources to establish a substantially uniform intensity of the imaging surface; recording drive current values for the multiple front light sources; replacing the calibration tube with a calibration tool having a calibration surface of a known reflectance; and measuring target intensity values of the calibration tool at the respective drive current values. Calibration tools, imaging apparatus, quality check modules, and health check methods are provided, as are other aspects.