Imaging astronomical sources at high resolution with novel aperture synthesis devices
New up-conversion interferometers use sum-frequency generation processes and allow efficient analyses at IR and visible wavelengths.
A nonimaging boost for luminescent solar concentration
Engineering directional light emission with a simple photonic structure enables high secondary geometric gain.
Liquid crystal devices tailored for specific imaging applications
Harnessing the strong electro-optic properties of liquid crystals permits high-resolution, extended depth of focus, and multi-parameter imaging.
High-energy mid-IR laser for defense against heat-seeking missiles
Nonlinear conversion of 2?m nanosecond pulses from a high-energy holmium laser enables future IR weapon countermeasures.
Displaying a full high-definition, high-quality 3D image without glasses
A hybrid spatial-sequential technique and free-form surface backlight unit enable an autostereoscopic display that combines full resolution, low crosstalk, and wide viewing angle.
Measuring the sun''s coronal green line from Earth
Combining a robust, classically designed coronagraph with liquid-crystal-based focal plane instrumentation enables effective Earth-based observations of the sun''s corona.
Sulfur copolymers for IR optics
A novel polymer made from sulfur is easily molded and has superior transmission properties in the IR from 600nm up to 6?m with a 1?m stop band.
Monitoring machining temperature using optical fibers
An IR fiber-optic pyrometer measures temperatures above 250?C close to rotating components where other sensing techniques are unsuitable.