Jan 2012
High-Speed Digital Interferometry
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Optical decoding eliminates the need for high-speed detectors and digital signal processing.
Digitally enhanced heterodyne interferometry (DI) is a laser metrology technique employing pseudo-random noise (PRN) codes phase-modulated onto an optical carrier. Combined with heterodyne interferometry, the PRN code is used to select individual signals, returning the inherent ...Read More >>
Integrated Optics Achromatic Nuller for Stellar Interferometry
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Nuller allows faint off-axis light to be much more easily seen.
This innovation will replace a beam combiner, a phase shifter, and a mode conditioner, thus simplifying the system design and alignment, and saving weight and space in future missions. This nuller is a dielectric-waveguidebased, four-port asymmetric coupler. ...Read More >>
Near-Infrared Photon-Counting Camera for High-Sensitivity Observations
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Extremely faint phenomena and NIR signals emitted from distant celestial objects can be observed and imaged.
The dark current of a transferred-electron photocathode with an InGaAs absorber, responsive over the 0.9-to-1.7-μm range, must be reduced to an ultralow level suitable for low signal spectral astrophysical measurements ...Read More >>
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Nov 2011
Multiple-Event, Single-Photon Counting Imaging SensorQualification of Fiber Optic Cables for Martian Extreme Temperature Environments
Transverse Pupil Shifts for Adaptive Optics Non-Common Path Calibration
Solid-State Spectral Light Source System
Oct 2011
Polished Panel Optical Receiver for Simultaneous RF/Optical Telemetry With Large DSN AntennasSep 2011
Low-Power, Self-Calibrated Vector MagnetometerJul 2011
Pulsed Laser System to Simulate Effects of Cosmic Rays in Semiconductor DevicesTest Port for Fiber-Optic-Coupled Laser Altimeter
Jan 2011
Method for Implementing Optical Phase AdjustmentOct 2010
On Calculating the Zero-Gravity Surface Figure of a MirrorFiber-Coupled Planar Light-Wave Circuit for Seed Laser Control in High Spectral Resolution Lidar Systems
Sep 2010
Qualification and Selection of Flight Diode Lasers for Space ApplicationsHigh-Speed Operation of Interband Cascade Lasers
Hybrid AlGaN-SiC Avalanche Photodiode for Deep-UV Photon Detection
Mode Selection for a Single-Frequency Fiber Laser
Jul 2010
Holographic Vortex CoronagraphPhoton Counting Using Edge-Detection Algorithm
Optical Structural Health Monitoring Device
May 2010
Widely Tunable Mode-Hop-Free External-Cavity Quantum Cascade LaserNon-Geiger-Mode Single-Photon Avalanche Detector With Low Excess Noise
Using Whispering-Gallery-Mode Resonators for Refractometry
Apr 2010
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