Design of inexpensive diffraction limited focal plane arrays for millimeter wavelength and terahertz radiation using glow discharge detector pixels

Abramovich, Amir; Kopeika, Norman S.; Rozban, Daniel

doi:10.1063/1.2963714

Cited by 44 publications

(26 citation statements)

References 4 publications

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“…Cascade ionization which increases the current in the plasma [7] and enhanced diffusion current that decreases it [8]. This property of the GDD was shown experimentally to be in excellent agreement with the theoretical model of the GDD operation [6][7][8][9][10]. The inexpensive price, high relative response (similar to Golay cells, pyroelectric detectors, bolometers, etc.…”

Section: Introductionsupporting

confidence: 66%

“…), and much faster of response (less than a microsecond), makes such devices excellent candidates for MMW and THz focal plane array imaging, as will be described in this paper. A comparison between the detection capabilities of the GDD to that of a Schottky diode detector was carried-out in [9]. It was found that a GDD commercial neon indicator lamp can be an effective detector in an 0.2 THz imaging system.…”

Section: Introductionmentioning

confidence: 99%

“…Application based MMW, as described above are well needed. Previous works of using very inexpensive Glow Discharge Detectors (GDD) in W-band were performed and presented [6][7][8][9][10][11][12][13][14][15]. The GDD is a low-pressure miniature neon indicator lamp.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Feasibility of Radon projection acquisition for compressive imaging in MMW region based new video rate 16×16 GDD FPA camera

Levanon

Konstantinovsky

Kopeika

et al. 2015

Passive and Active Millimeter-Wave Imaging XVIII

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In this article we present preliminary results for the combination of two interesting fields in the last few years: 1) Compressed imaging (CI), which is a joint sensing and compressing process, that attempts to exploit the large redundancy in typical images in order to capture fewer samples than usual. 2) Millimeter Waves (MMW) imaging. MMW based imaging systems are required for a large variety of applications in many growing fields such as medical treatments, homeland security, concealed weapon detection, and space technology. Moreover, the possibility to create a reliable imaging in low visibility conditions such as heavy cloud, smoke, fog and sandstorms in the MMW region, generate high interest from military groups in order to be ready for new combat. The lack of inexpensive room temperature imaging sensors makes it difficult to provide a suitable MMW system for many of the above applications. A system based on Glow Discharge Detector (GDD) Focal Plane Arrays (FPA) can be very efficient in real timeimaging with significant results. The GDD is located in free space and it can detect MMW radiation almost isotropically. In this article, we present a new approach of reconstruction MMW imaging by rotation scanning of the target. The Collection process here, based on Radon projections allows implementation of the compressive sensing principles into the MMW region. Feasibility of concept was obtained as radon line imaging results. MMW imaging results with our resent sensor are also presented for the first time. The multiplexing frame rate of 16x16 GDD FPA permits real time video rate imaging of 30 frames per second and comprehensive MMW imaging. It uses commercial GDD lamps with diameter, Ne indicator lamps as pixel detectors. Combination of these two fields should make significant improvement in MMW region imaging research, and new various of possibilities in compressing sensing technique.

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Section: Introductionsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

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Feasibility of Radon projection acquisition for compressive imaging in MMW region based new video rate 16×16 GDD FPA camera

Levanon

Konstantinovsky

Kopeika

et al. 2015

Passive and Active Millimeter-Wave Imaging XVIII

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“…We are investigating heterodyne detection with the GDD in which the NEP is expected to be about two orders of magnitude better. A 4 4 Focal plane array (FPA) based on GDD elements was constructed and tested experimentally [4]. This FPA allow us to capture two dimensional images, but an increase is desirable in data acquisition rates.…”

Section: Introductionmentioning

confidence: 99%

THz Polarization Effects on Detection Responsivity of Glow Discharge Detectors (GDDs)

2009

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The detection mechanism of glow discharge plasma in neon indicator lamps has been investigated in the terahertz and microwave spectral regions. The influence of the THz radiation polarization on the responsivity of glow discharge detectors (GDD) is considered here. There are two detection mechanisms in the GDD that exist simultaneously, each at the expense of the other. Experiments with GDD neon indicator lamps in the THz regime prove that the dominant detection mechanism of the GDD is enhanced cascade ionization rather than enhanced diffusion current. Our polarization experiments in the THz regime show that when the electric field of the THz radiation is in the same direction as the DC bias electric field of the lamp, the responsivity is about 50% higher than when the THz electric field is orthogonal to the DC field. This supports the concept that the dominant detection mechanism of the GDD in the THz regime is enhanced cascade ionization.

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“…However, success in developing less expensive real-time millimeter wave and terahertz imaging systems depends largely on the ability to develop inexpensive focal plane arrays, especially using inexpensive detectors such as GDDs. Indeed, small GDD arrays such as 8 × 8 and 18 × 2 scanner have been developed and tested and found to yield very good image quality despite the large size and dimensions of the lamps [15]- [19]. Recent results include using oversampling sub-pixel shifting to obtain high resolution images [17]- [19] on the order of 0.9 milliradians.…”

Section: Introductionmentioning

confidence: 97%

Calibration Method for MMW Imaging Using Inexpensive Miniature Neon Indicator Lamp Detectors

et al. 2014

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We have developed focal plan array (FPA) imagers based on very inexpensive miniature neon indicator lamp detectors called glow discharged detectors (GDDs). The novelty of this paper is a technique of calibration, which permits reliable imaging with such an inexpensive FPA. GDDs are commercial lamps, which lack uniformity as detectors. The technique developed in this paper cancels out differences in response between the FPA lamps caused by both nonuniformity of the MMW collimated beam, and nonuniformity of the GDDs and other components in the electronic circuit. Utilizing this method in the new imaging system unifies detector response. Results, shown with two types of sensor configurations (8 × 8 and 18× 2 scanner array), indeed show better performances and improvement in visibility of details.

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Design of inexpensive diffraction limited focal plane arrays for millimeter wavelength and terahertz radiation using glow discharge detector pixels

Cited by 44 publications

References 4 publications

Feasibility of Radon projection acquisition for compressive imaging in MMW region based new video rate 16×16 GDD FPA camera

Feasibility of Radon projection acquisition for compressive imaging in MMW region based new video rate 16×16 GDD FPA camera

THz Polarization Effects on Detection Responsivity of Glow Discharge Detectors (GDDs)

Calibration Method for MMW Imaging Using Inexpensive Miniature Neon Indicator Lamp Detectors

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