Abstract: A method and a system of optical nanoscale alignment, a sample support comprises a first holder for a first chip and a second holder for a second chip; the first and second chips are positioned in a facing relationship on a first and a second surface of the sample respectively, and a dual light source casts a coherent light beam on the sample from a first surface and an incoherent beam on the sample from a second, opposite, surface thereof; a positioning unit controls the movement of the first chip and controls the movement of the second chip according to isotropic interference fringes generated by the dual light in reflection mode in images captured by an imaging unit, indicating of pitch and yaw angle, light from the dual light source in transmission mode providing bright field illumination while x, y, and rotation alignments are performed.

Abstract: A method and a system for imaging a dynamic scene, by time-spectrum mapping when a single chirped pulse probes the dynamic scene, storing temporal information at different wavelengths, spectral shearing, spatial encoding and reverse spectral shearing; spatiotemporal integration; and image reconstruction from a resulting captured snapshot, using a laser source configured to emit a linearly chirped laser probe pulse; an imaging unit; a shearing and reversing shearing unit; an encoder; a detector; and a computer; wherein the imaging unit is configured to record the linearly chirped laser probe pulse transmitted by the dynamic scene in a snapshot; the shearing and reversing shearing unit is configured to spectrally shears the linearly chirped laser pulses received from the imaging unit to the encoder, the detector records a compressed snapshot of a temporal information of the dynamic scene read out by the probe pulse; and the computer processes the snapshot and yields a(x,y,t) datacube of the dynamic scene.

Abstract: A system and a method for single-shot compressed optical-streaking ultra-high-speed imaging, the system comprising a spatial encoding module spatially encoding the transient event with a binary pseudo-random pattern into spatially encoded frames; a galvanometer scanner temporally shearing the spatially encoded frames; and a CMOS camera receiving the temporally sheared spatially encoded frames, during one exposure time of the camera, for reconstructing the transient event. The method comprises spatial encoding a transient event; temporal shearing resulting spatially encoded frames of the event, spatio-temporal integration, and reconstruction.

Abstract: A system and a method for high-speed dual-view band-limited illumination profilometry using temporally interlaced acquisition is disclosed. The method comprises using a projecting unit for projecting sinusoidal fringe patterns onto an object and capturing fringe patterns deformed by the object. A 3D image of the object is recovered pixel by pixel from partial images provided by a first camera and a second camera by locating a point in the images of the second camera that matches a selected pixel of the first camera. 3D coordinates and wrapped phase are then estimated based on a calibration of the cameras and determining an horizontal coordinate on the plane of a projector of the projecting unit based on a calibration of the projector, and using a wrapped phase value to recover a 3D point of 3D coordinates (x, y, z).

Abstract: A diffraction-gated real-time ultrahigh-speed mapping photography method and system, by probing a transient scene with a single-wavelength continuous-wave beam, imaging the probed transient scene, generating different replicated images of the transient scene at spatially separated positions by using a 4f imaging system and a spatial light modulator, and rescaling the images size onto a low-speed CMOS or CCD camera for example, synchronizing with the flipping of the spatial light modulator for recording images of the transient scene.

Abstract: Compressed ultrafast photography (CUP) techniques that produce spatially encoded images from a first series of images where each spatially encoded image has first and second views of an image of the first series of images superimposed with a pseudo-random binary spatial pattern, that transform the first view and/or the second view such that the first view is rotated 180° relative to second view, that deflect each spatially encoded image by a temporal deflection distance that varies as a function of time-of-arrival, and that integrate the spatially encoded images into a CUP image.

Abstract: A method and a system method for real-time wide-field dynamic temperature sensing of an object, the method comprising producing wide-field illumination to upconverting nanoparticles at the object plane, collecting a light emitted by the upconverting nanoparticles, dividing a collected light into a reflected component and a transmitted component, imaging the reflected component into a first image, imaging the transmitted component into a second image; processing the images; and reconstruction of the object from resulting proceed images.

Abstract: A method and a system for single-pixel of an object is provided for deterministic two-dimensional (2D) spatial patterns onto the imaging beam, followed by data acquisition using a single-pixel detector. In the ensuing image reconstruction, these spatial patterns are used as prior knowledge to facilitate the accurate recovery of spatial information. By eliminating the need for a 2D sensor such as CCD or CMOS, the method and system allow using detectors whose cutting-edge performance or high specialization are impractical to manufacture in an array format. laser scanning rapidly deploys individual encoding masks as optically selected sub-regions larger aggregate patterns that are displayed via DMD. Pattern aggregation enhances SPI data acquisition rates to more than two orders of magnitude above the limitations of DMD-only modulation, while still retaining the frame size and flexibility of pattern display with DMDs.

Abstract: A method for 3D surface imaging of an object, comprising generating a sinusoidal pattern from an input beam; projecting the sinusoidal pattern onto the object; acquiring deformed structured images from the object; reconstructing and displaying the surface of the object in real-time. A system comprises an device encoding an input beam with a structured pattern; a filter configured to spatially filter the encoded beam; a projector lens projecting the structured pattern onto the object; a high speed camera acquiring a structured pattern deformed by the 3D surface of the object; a graphic processing unit; and a CoaXPress interface transferring data acquired by the camera to the graphic processing unit; the graphic processing unit reconstructing and displaying the 3D surface of the object in real-time.

Abstract: A method and a system for single-pixel of an object is provided for deterministic two-dimensional (2D) spatial patterns onto the imaging beam, followed by data acquisition using a single-pixel detector. In the ensuing image reconstruction, these spatial patterns are used as prior knowledge to facilitate the accurate recovery of spatial information. By eliminating the need for a 2D sensor such as CCD or CMOS, the method and system allow using detectors whose cutting-edge performance or high specialization are impractical to manufacture in an array format. laser scanning rapidly deploys individual encoding masks as optically selected sub-regions larger aggregate patterns that are displayed via DMD. Pattern aggregation enhances SPI data acquisition rates to more than two orders of magnitude above the limitations of DMD-only modulation, while still retaining the frame size and flexibility of pattern display with DMDs.

Abstract: Among the various aspects of the present disclosure is the provision of systems and methods of phase-sensitive compressed ultrafast photography.

Abstract: A method and a system for imaging a transient event, the method comprising passively recording spatiotemporal projections of the transient event in an angular range from ?45° to +45°; and processing the recorded spatiotemporal projections by compressed sensing tomographic image reconstruction to recover the transient event. The system comprises an imaging unit and a shearing unit for imaging a dynamic event to different positions, a detector that records data by spatially integrating over each pixel and temporally integrating; and a processing unit that reconstructs the dynamic event from said data by compressed sensing tomographic image reconstruction.

Abstract: Disclosed herein are systems and methods of phase-sensitive compressed ultrafast photography (pCUP). In some embodiments, a pCUP system comprises: a dark-field imaging system, and a compressed ultrafast photography (CUP system). The dark-field imaging system may comprise a laser source configured to illuminate the subject with a laser pulse; and a beam block configured to pass laser light scattered by the subject as a first series of phase images and block laser light not scattered by the subject. The CUP system may comprise: a spatial encoding module configured to receive the first series of phase images and to produce a second series of spatially encoded phase images; and a streak camera configured to receive the second series of spatially encoded phase images, to deflect each spatially encoded phase image by a temporal deflection distance, and to integrate the deflected phase images into a single raw CUP image.

Abstract: A method and a system for imaging a dynamic scene, by time-spectrum mapping when a single chirped pulse probes the dynamic scene, storing temporal information at different wavelengths, spectral shearing, spatial encoding and reverse spectral shearing; spatiotemporal integration; and image reconstruction from a resulting captured snapshot, using a laser source configured to emit a linearly chirped laser probe pulse; an imaging unit; a shearing and reversing shearing unit; an encoder; a detector; and a computer; wherein the imaging unit is configured to record the linearly chirped laser probe pulse transmitted by the dynamic scene in a snapshot; the shearing and reversing shearing unit is configured to spectrally shears the linearly chirped laser pulses received from the imaging unit to the encoder, the detector records a compressed snapshot of a temporal information of the dynamic scene read out by the probe pulse; and the computer processes the snapshot and yields a(x,y,t) datacube of the dynamic scene.

Abstract: A method and a system method for real-time wide-field dynamic temperature sensing of an object, the method comprising producing wide-field illumination to upconverting nanoparticles at the object plane, collecting a light emitted by the upconverting nanoparticles, dividing a collected light into a reflected component and a transmitted component; imaging the reflected component into a first image, imaging the transmitted component into a second image; processing the images; and reconstruction of the object from resulting proceed images.

Abstract: A method for 3D surface imaging of an object, comprising generating a sinusoidal pattern from an input beam; projecting the sinusoidal pattern onto the object; acquiring deformed structured images from the object; reconstructing and displaying the surface of the object in real-time. A system comprises an device encoding an input beam with a structured pattern; a filter configured to spatially filter the encoded beam; a projector lens projecting the structured pattern onto the object; a high speed camera acquiring a structured pattern deformed by the 3D surface of the object; a graphic processing unit; and a CoaXPress interface transferring data acquired by the camera to the graphic processing unit; the graphic processing unit reconstructing and displaying the 3D surface of the object in real-time.

Abstract: Among the various aspects of the present disclosure is the provision of systems and methods of phase-sensitive compressed ultrafast photography.

Abstract: A method and a system for broadband coded aperture light field imaging of an object, the method comprising illuminating the object with a broadband light source; imaging a broadband light emitted by the illuminated object and forming a first image of the object on an intermediate image plane, relaying the first image to a final image plane and forming a final image of the object on a camera placed at the final image plane.

Abstract: A system and a method for single-shot compressed optical-streaking ultra-high-speed imaging, the system comprising a spatial encoding module spatially encoding the transient event with a binary pseudo-random pattern into spatially encoded frames; a galvanometer scanner temporally shearing the spatially encoded frames; and a CMOS camera receiving the temporally sheared spatially encoded frames, during one exposure time of the camera, for reconstructing the transient event. The method comprises spatial encoding a transient event; temporal shearing resulting spatially encoded frames of the event, spatio-temporal integration, and reconstruction.

Abstract: A system and a method for 3D imaging of an object, the method comprising projecting sinusoidal fringe patterns onto the object using a projecting unit and capturing fringe patterns deformed by the object, alternatively by at least a first camera and a second camera, and recovering a 3D image of the object pixel by pixel from mutually incomplete images provided by the first camera and the second camera, by locating a point in images of the second camera that matches a selected pixel of the first camera; determining estimated 3D coordinates and wrapped phase based on calibration of the cameras, determining an horizontal coordinate on the plane of a projector of the projecting unit based on calibration of the projector, and using a wrapped phase value to recover a 3D point of 3D coordinates (x, y, z).