Terahertz Wave Imaging System Based on Glow Discharge Detector

Hou, Lei; Park, Hong-Kyu; Zhang, Xicheng

doi:10.1109/jstqe.2010.2045640

Cited by 58 publications

(35 citation statements)

References 17 publications

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“…3. The dependence of the responsivity with current that we observe for the neon lamp RS 655-9413 is very similar to that observed for neon lamp NE-2B-3x8 [4] and for neon lamp N523 [18,19].…”

Section: Electrical Detectionsupporting

confidence: 86%

“…With respect to the input, the power might be the power emitted by the source, or that portion that is focussed onto the neon lamp, or that portion which is transmitted through the glass envelope of the lamp into the plasma itself. (The THz transmission of the glass envelope has been reported by Hou et al [4].) Here, we take a conservative approach by employing the total power falling on the GDD cross section, estimated to be 5 mW.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, there is very little current flow, leading to a negligible response to THz radiation [4]. As the current is increased to the milliamp range, corresponding to the the normal and abnormal glow regions, there is a significant population of excited neon atoms.…”

Section: Electrical Detectionmentioning

confidence: 99%

“…This is a remarkably broad range, spanning six orders of magnitude. Furthermore, neon lamps as GDDs exhibit a wide dynamic range [9], are electronically rugged (can be exposed up to 30 kW of light without damage) [10], and exhibit a relatively low noise equivalent power (NEP) (10 −8 to 10 −12 WHz −1/2 ) [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…For a more complete introduction to the various operating IV regions, see ref. [4]. The "abnormal" region is where the largest current flows before breakdown begins in the "arc" region.…”

Section: Introductionmentioning

confidence: 99%

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Electrical Versus Optical: Comparing Methods for Detecting Terahertz Radiation Using Neon Lamps

Slocombe

Lewis

2018

J Infrared Milli Terahz Waves

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Terahertz radiation impinging on a lit neon tube causes additional ionization of the encapsulated gas. As a result, the electrical current flowing between the electrodes increases and the glow discharge in the tube brightens. These dual phenomena suggest two distinct modes of terahertz sensing. The electrical mode simply involves measuring the electrical current. The optical mode involves monitoring the brightness of the weakly ionized plasma glow discharge. Here, we directly compare the two detection modes under identical experimental conditions. We measure 0.1-THz radiation modulated at frequencies in the range 0.1-10 kHz, for lamp currents in the range 1-10 mA. We find that electrical detection provides a superior signal-tonoise ratio while optical detection has a faster response. Either method serves as the basis of a compact, robust, and inexpensive room-temperature detector of terahertz radiation.

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Section: Electrical Detectionsupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Electrical Detectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…For a more complete introduction to the various operating IV regions, see ref. [4]. The "abnormal" region is where the largest current flows before breakdown begins in the "arc" region.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Electrical Versus Optical: Comparing Methods for Detecting Terahertz Radiation Using Neon Lamps

Slocombe

Lewis

2018

J Infrared Milli Terahz Waves

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Nanostructured Photodetectors: From Ultraviolet to Terahertz

et al. 2015

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Inspired by nanoscience and nanoengineering, numerous nanostructured materials developed by multidisciplinary approaches exhibit excellent photoelectronic properties ranging from ultraviolet to terahertz frequencies. As a new class of building block, nanoscale elements in terms of quantum dots, nanowires, and nanolayers can be used for fabricating photodetectors with high performance. Moreover, in conjunction with traditional photodetectors, they exhibit appealing performance for practical applications including high density of integration, high sensitivity, fast response, and multifunction. Therefore, with the perspective of photodetectors constructed by diverse low-dimensional nanostructured materials, recent advances in nanoscale photodetectors are discussed here; meanwhile, challenges and promising future directions in this research field are proposed.

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Hybrid Nanostructures for Photodetectors

Tian

Liú

Cao

et al. 2016

Advanced Optical Materials

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0D/1D Nanostructured PhotodetectorsDue to the superior optoelectronic properties and enhanced light absorption efficiency relative to their thin film or bulk counterparts, 1D nanostructures are ideal building blocks for photodetectors. In 2001, Lieber's group demonstrated one of the first examples of an individual InP nanowire-based By combining unique properties of individual constituents, hybrid nano structures consisting of two or more components with distinct functionality, usually exhibit optimized optoelectronic performance. Hybrid nanostructures have been widely studied and applied as building blocks to construct photo detectors, which exhibit excellent characteristics in terms of large respon sivity, high sensitivity, fast response speed, and broad photoresponse. This article provides a comprehensive summary about recent progress on hybrid nanostructures containing various nanomaterials, and their performance as photodetectors. Perspectives and outlooks on the promising future directions of this research field are summarized and highlighted.

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Terahertz Wave Imaging System Based on Glow Discharge Detector

Cited by 58 publications

References 17 publications

Electrical Versus Optical: Comparing Methods for Detecting Terahertz Radiation Using Neon Lamps

Electrical Versus Optical: Comparing Methods for Detecting Terahertz Radiation Using Neon Lamps

Nanostructured Photodetectors: From Ultraviolet to Terahertz

Hybrid Nanostructures for Photodetectors

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