Abstract: Embodiments relate generally to electromagnetic radiation detector devices, systems, and methods using a planar Golay cell. A method for gas detection may comprise providing a gas sealed in a cavity of a gas detector; directing radiative power from a light source through one or more target gases and through a cell body of the gas detector toward the cavity and a wavelength selective absorber of the gas detector, wherein the one or more target gases are located between the light source and the cavity; setting wavelength sensitivity with the wavelength selective absorber, wherein the wavelength sensitivity is irrespective of an angle of incidence (?); absorbing the radiative power by the wavelength selective absorber and by the one or more target gases; detecting, by a pressure sensing element, a pressure change caused by the absorbing of the radiative power; and determining the one or more target gases based on the detected pressure change.

Abstract: A ring laser gyroscope is provided. A light source is configured to generate light of a first wavelength. A plurality primary cavity mirrors are configured to route light of a second wavelength around a primary cavity to a readout device. One primary cavity mirror of the plurality of primary cavity mirrors includes a gain medium. The pumping mirror and the one primary cavity mirror including the gain medium is positioned and configured to reflect the light of the first wavelength back and forth in a pumping cavity through the gain medium, wherein the light of the first wavelength stimulates the gain medium to generate the light of the second wavelength that are reflected around the primary cavity to the readout device.

Abstract: Embodiments relate generally to systems and methods for filtering unwanted wavelengths from an IR detector. In some embodiments, it may be desired to remove or reduce the wavelengths absorbed by water, to reduce the effects of water on the detection of the target gas. In some embodiments, a filter glass may be used in the IR detector, wherein the filter glass comprises one or more materials that contain hydroxyls in their molecular structure, and wherein the spectral absorption properties of the filter glass are operable to at least reduce wavelengths of light absorbed by water from the optical, thereby reducing the IR detector's cross sensitivity to water.

Abstract: A ring laser gyroscope is provided. A light source is configured to generate light of a first wavelength. A plurality primary cavity mirrors are configured to route light of a second wavelength around a primary cavity to a readout device. One primary cavity mirror of the plurality of primary cavity mirrors includes a gain medium. The pumping mirror and the one primary cavity mirror including the gain medium is positioned and configured to reflect the light of the first wavelength back and forth in a pumping cavity through the gain medium, wherein the light of the first wavelength stimulates the gain medium to generate the light of the second wavelength that are reflected around the primary cavity to the readout device.

Abstract: Embodiments relate generally to electromagnetic radiation detector devices, systems, and methods using a planar Golay cell. A method for gas detection may comprise providing a gas sealed in a cavity of a gas detector; directing radiative power from a light source through one or more target gases and through a cell body of the gas detector toward the cavity and a wavelength selective absorber of the gas detector, wherein the one or more target gases are located between the light source and the cavity; setting wavelength sensitivity with the wavelength selective absorber, wherein the wavelength sensitivity is irrespective of an angle of incidence (?); absorbing the radiative power by the wavelength selective absorber and by the one or more target gases; detecting, by a pressure sensing element, a pressure change caused by the absorbing of the radiative power; and determining the one or more target gases based on the detected pressure change.

Abstract: A non-dispersive photoacoustic gas detector includes an infrared light source, a first closed chamber, a first acoustic sensor in fluid communication with the first closed chamber, a second closed chamber, and a second acoustic sensor in fluid communication with the second closed chamber. The first closed chamber comprises a plurality of windows that are substantially transparent to infrared light from the infrared light source. The second closed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the first closed chamber is arranged in series with the second closed chamber between the infrared light source and the second closed chamber.

Abstract: Devices, methods, systems, and computer-readable media for a dual wavelength source gas sensor are described herein. One or more embodiments include a gas sensor, comprising: a dual wavelength source to transmit a first wavelength and a second wavelength via an optical path, wherein a gas is present through the optical path, a detector to receive the first wavelength and the second wavelength via the optical path, and a computing device coupled to the detector to determine an determine a signal intensity for the first wavelength and the second wavelength.

Abstract: Embodiments relate generally to gas detector systems and method, wherein a gas detector system may comprise at least one emitter configured to emit radiation in a beam path; at least one detector configured to receive at least a portion of the emitted radiation, wherein the emitted radiation generates at least two focused spots at the at least one detector; a ring reflector configured to direct the emitted radiation around the ring reflector toward the at least one detector, wherein the ring reflector comprises at least a portion of a spheroid shape, and wherein the ring reflector is configured to allow gas to flow through at least a portion of the beam path; and a processing circuit coupled to the one or more detectors configured to processes an output from the one or more detectors.

Abstract: A non-dispersive photoacoustic gas detector comprises an infrared light source, a closed chamber, a gas sample disposed within the closed chamber, and an acoustic sensor in fluid communication with the dosed chamber. The dosed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the gas sample comprises a gas or a mixture of at least two gases.

Abstract: A non-dispersive photoacoustic gas detector includes an infrared light source, a first closed chamber, a first acoustic sensor in fluid communication with the first closed chamber, a second closed chamber, and a second acoustic sensor in fluid communication with the second closed chamber. The first closed chamber comprises a plurality of windows that are substantially transparent to infrared light from the infrared light source. The second closed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the first closed chamber is arranged in series with the second closed chamber between the infrared light source and the second closed chamber.

Abstract: Systems and methods for positionally stable magneto-optical trapping over temperature are provided. In certain embodiments, an atomic sensor may include at least one laser source configured to produce at least one laser; one or more optical components, wherein the one or more optical components direct the at least one laser; and a vacuum cell, wherein the one or more optical components direct the at least one laser into the vacuum cell, wherein the one or more optical components and the vacuum cell are bonded together and components within the atomic sensor are fabricated from materials having similar coefficients of thermal expansion.

Abstract: Embodiments relate generally to gas detector systems and methods, wherein a gas detector system may comprise one or more emitter configured to emit radiation in a beam path; one or more detector configured to receive at least a portion of the emitted radiation; a ring reflector configured to direct the emitted radiation around the ring reflector toward the one or more detector, wherein the ring reflector comprises at least a portion of a spheroid shape, and wherein the ring reflector is configured to allow one or more gas to flow through at least a portion of the beam path; and a processing circuit coupled to the one or more detectors configured to process an output from the one or more detectors.

Abstract: Embodiments relate generally to gas detector systems and method, wherein a gas detector system may comprise at least one emitter configured to emit radiation in a beam path; at least one detector configured to receive at least a portion of the emitted radiation, wherein the emitted radiation generates at least two focused spots at the at least one detector; a ring reflector configured to direct the emitted radiation around the ring reflector toward the at least one detector, wherein the ring reflector comprises at least a portion of a spheroid shape, and wherein the ring reflector is configured to allow gas to flow through at least a portion of the beam path; and a processing circuit coupled to the one or more detectors configured to processes an output from the one or more detectors.

Abstract: Embodiments relate generally to systems and methods for filtering unwanted wavelengths from an IR detector. In some embodiments, it may be desired to remove or reduce the wavelengths absorbed by water, to reduce the effects of water on the detection of the target gas. In some embodiments, a filter glass may be used in the IR detector, wherein the filter glass comprises one or more materials that contain hydroxyls in their molecular structure, and wherein the spectral absorption properties of the filter glass are operable to at least reduce wavelengths of light absorbed by water from the optical, thereby reducing the IR detector's cross sensitivity to water.

Abstract: Provided is a compact display system and method for creating, with minimal volume, a focused, high quality, full color, large FOV virtual image characterized by eye-limited spatial resolution. The provided compact display (i) enables a flexible range of eye relief, and (ii) enables a large exit pupil.

Abstract: Devices, methods, systems, and computer-readable media for a dual wavelength source gas sensor are described herein. One or more embodiments include a gas sensor, comprising: a dual wavelength source to transmit a first wavelength and a second wavelength via an optical path, wherein a gas is present through the optical path, a detector to receive the first wavelength and the second wavelength via the optical path, and a computing device coupled to the detector to determine an determine a signal intensity for the first wavelength and the second wavelength.

Abstract: Systems and methods for positionally stable magneto-optical trapping over temperature are provided. In certain embodiments, an atomic sensor may include at least one laser source configured to produce at least one laser; one or more optical components, wherein the one or more optical components direct the at least one laser; and a vacuum cell, wherein the one or more optical components direct the at least one laser into the vacuum cell, wherein the one or more optical components and the vacuum cell are bonded together and components within the atomic sensor are fabricated from materials having similar coefficients of thermal expansion.

Abstract: A laser scanning system having a laser scanning field, and a laser beam optics module with an optical axis and including: an aperture stop disposed after a laser source for shaping the laser beam to a predetermined beam diameter; a collimating lens for collimating the laser beam produced from the aperture stop; an apodization element having a first and second optical surfaces for extending the depth of focus of the laser beam from the collimating lens; and a negative bi-prism, disposed after the apodization element, along the optical axis, to transform the energy distribution of the laser beam and cause the laser beam to converge to substantially a single beam spot along the far-field portion of the laser scanning field, and extend the depth of focus of the laser beam along the far-field portion of the laser scanning field.

Abstract: Provided is a compact display system and method for creating, with minimal volume, a focused, high quality, full color, large FOV virtual image characterized by eye-limited spatial resolution. The provided compact display (i) enables a flexible range of eye relief, and (ii) enables a large exit pupil.

Abstract: An improved rotorcraft blade tracking system and method is provided. The provided blade tracking system and method projects a focused beam of light with minimal variance in predetermined spectral characteristics at the ranges of distance suitable for rotorcraft blade tracking applications. The provided system and method detects a reflected beam of light that is associated with the projected focused beam of light. The provided system and method maintains eye safety, and performs consistently over a variety of environmental conditions.