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Cranbury, NJ, United States

Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 737.76K | Year: 2016

Growing interest in precise measurements of methane concentration and distribution in the Earth's atmosphere is stimulating efforts to develop LIDAR systems in the spectral region of 16xx nm utilizing Path Differential Absorption techniques. The key element of such systems is a high energy optical source with good beam properties operating in the vicinity of a methane absorption line. A number of very promising architectures for designing high energy lasers at 1651 nm have been described recently, but the performance of the lasers developed in these earlier efforts has been limited by the lack of a sufficiently high-power tunable seed laser. We demonstrated in Phase I of this SBIR program a feasibility of a high power fiber-coupled, narrow linewidth, tunable seed laser at 1650nm. For this SBIR Phase II program, we propose to develop and to deliver a robust seed laser that is highly reliable, compact, and which ultimately will allow the realization of much higher performance high energy laser sources designed for methane detection.


Grant
Agency: Department of Defense | Branch: Missile Defense Agency | Program: SBIR | Phase: Phase II | Award Amount: 999.60K | Year: 2015

For this Phase II SBIR, Princeton Lightwave Inc. (PLI) is proposing to demonstrate disruptive single photon counting performance characteristics of Geiger-mode avalanche photodiode (GmAPD) cameras by making dramatic improvements to existing commercial short wave infrared GmAPD focal plane arrays. These cameras provide high-performance three-dimensional imaging capability for intelligence, surveillance, and reconnaissance systems as well as real-time acquisition and tracking of objects moving at high velocities. The design concepts to be implemented in this development will provide order-of-magnitude improvement in dark count rate, crosstalk, and radiation tolerance over our current state-of-the-art commercial FPAs. To accelerate the deployment of these dramatic performance improvements, our Phase II effort will also be devoted to a complete redesign of the GmAPD FPA and camera to achieve size and weight reductions on the order of 5X 10X, along with reduction of power dissipation by as much as 2X. This development will yield GmAPD sensors with unprecedentedly low size, weight, and power (SWaP), and the reliability of this miniaturized platform will be confirmed through extensive environmental testing. Approved for Public Release 15-MDA-8169 (20 March 15)


Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 124.99K | Year: 2015

Growing interest in precise measurements of methane concentration and distribution in the Earth's atmosphere is stimulating efforts to develop LIDAR systems in the spectral region of 1.65 �m utilizing Path Differential Absorption techniques. The key element of such systems is a high energy optical source with good beam properties operating in the vicinity of a methane absorption line. A number of very promising architectures for designing high energy lasers at 1651 nm have been described recently, but the performance of the lasers developed in these earlier efforts has been limited by the lack of a sufficiently high-power tunable seed laser. For this SBIR Phase I program, we propose to develop a robust seed laser that is fiber-coupled, narrow linewidth, tunable, highly reliable, compact, and which ultimately will allow the realization of much higher performance high energy laser sources designed for methane detection.


Patent
Princeton Lightwave, Inc. | Date: 2013-05-10

A single-photon receiver is presented. The receiver comprises two SPADs that are monolithically integrated on the same semiconductor chip. Each SPAD is biased with a substantially identical gating signal. The output signals of the SPADs are combined such that capacitive transients present on each output signal cancel to substantially remove them from the output signal from the receiver.


Patent
Princeton Lightwave, Inc. | Date: 2012-05-04

A single-photon receiver and method for detecting a single-photon are presented. The receiver comprises a SPAD that receives a gating signal having a fundamental frequency in the 100 MHz to multiple GHz range. The receiver further comprises a two-stage frequency filter for filtering the output of the SPAD, wherein the filter has: (1) a notch filter response at the fundamental frequency; and (2) a low-pass filter response whose cutoff frequency is less than the first harmonic of the fundamental frequency. As a result, the frequency filter removes substantially all the frequency components in the SPAD output without significant degradation of the signal quality but with reduced complexity, cost, and footprint requirement relative to receivers in the prior art.

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