Infrared Black Phosphorus Phototransistor with Tunable Responsivity and Low Noise Equivalent Power

2017 ◽  
Vol 9 (41) ◽  
pp. 36130-36136 ◽  
Author(s):  
Li Huang ◽  
Wee Chong Tan ◽  
Lin Wang ◽  
Bowei Dong ◽  
Chengkuo Lee ◽  
...  
Keyword(s):  
Low Noise ◽  
Black Phosphorus ◽  
Noise Equivalent Power

Pseudo- planar Ge-on-Si single-photon avalanche detectors with low noise equivalent power

2021 ◽  
Author(s):  
Jaroslaw Kirdoda ◽  
Ross William Millar ◽  
Fiona Thorburn ◽  
Laura L. Huddleston ◽  
Derek C. S. Dumas ◽  
...  
Keyword(s):  
Single Photon ◽  
Low Noise ◽  
Noise Equivalent Power

NOISE MEASUREMENT OF III-V COMPOUND DETECTORS FOR 2 μm LIDAR/DIAL REMOTE SENSING APPLICATIONS

2002 ◽  
Vol 12 (02) ◽  
pp. 531-540 ◽  
Author(s):  
M. NURUL ABEDIN ◽  
TAMER F. REFAAT ◽  
UPENDRA N. SINGH
Keyword(s):  
Remote Sensing ◽  
Infrared Detectors ◽  
Avalanche Photodiodes ◽  
Vital Role ◽  
Low Noise ◽  
Noise Equivalent Power ◽  
Pin Diodes ◽  
Figures Of Merit ◽  
Sensing Applications ◽  
Remote Sensing Applications

Noise of a photodetector plays a vital role in determining the minimum detectable signal for lidar and DIAL receivers. A low noise trans-impedance amplifier circuit has been employed to examine the noise of III-V compound infrared detectors. These infrared detectors include InGaAs PIN diodes and newly developed InGaAsSb avalanche photodiodes (APDs) with separate absorption and multiplication (SAM) structure. The noise of these detectors are compared with well-established Si APDs. These measured noises are utilized to compute the figures-of-merit, such as noise-equivalent-power (NEP) and detectivity (D*) of these devices and are presented in this paper.

Si–MoS2 Vertical Heterojunction for a Photodetector with High Responsivity and Low Noise Equivalent Power

2019 ◽  
Vol 11 (7) ◽  
pp. 7626-7634 ◽  
Author(s):  
Gwang Hyuk Shin ◽  
Junghoon Park ◽  
Khang June Lee ◽  
Geon-Beom Lee ◽  
Hyun Bae Jeon ◽  
...  
Keyword(s):  
Low Noise ◽  
Noise Equivalent Power ◽  
High Responsivity

Ge-on-Si Single-Photon Avalanche Diode Detectors with Low Noise Equivalent Power in the Short-Wave Infrared

2021 ◽  
Author(s):  
Ross W. Millar ◽  
Jaroslaw Kirdoda ◽  
Fiona Thorburn ◽  
Laura L. Huddleston ◽  
Derek C. S. Dumas ◽  
...  
Keyword(s):  
Single Photon ◽  
Short Wave ◽  
Low Noise ◽  
Noise Equivalent Power ◽  
Avalanche Diode ◽  
Short Wave Infrared

scholarly journals Nanobolometer with ultralow noise equivalent power

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Roope Kokkoniemi ◽  
Joonas Govenius ◽  
Visa Vesterinen ◽  
Russell E. Lake ◽  
András M. Gunyhó ◽  
...  
Keyword(s):  
Time Constant ◽  
Particle Physics ◽  
High Speed ◽  
Photon Counting ◽  
Low Noise ◽  
Point Of View ◽  
Consumer Electronics ◽  
Noise Equivalent Power ◽  
Order Of Magnitude ◽  
Lower Noise

Abstract Since the introduction of bolometers more than a century ago, they have been used in various applications ranging from chemical sensors, consumer electronics, and security to particle physics and astronomy. However, faster bolometers with lower noise are of great interest from the fundamental point of view and to find new use-cases for this versatile concept. We demonstrate a nanobolometer that exhibits roughly an order of magnitude lower noise equivalent power, $$20\,{\mathrm{zW}}/\sqrt {{\mathrm{Hz}}}$$ 20 zW ∕ Hz , than previously reported for any bolometer. Importantly, it is more than an order of magnitude faster than other low-noise bolometers, with a time constant of 30 μs at $$60\,{\mathrm{zW}}/\sqrt {{\mathrm{Hz}}}$$ 60 zW ∕ Hz . These results suggest a calorimetric energy resolution of 0.3 zJ = h × 0.4 THz with a time constant of 30 μs. Further development of this nanobolometer may render it a promising candidate for future applications requiring extremely low noise and high speed such as those in quantum technology and terahertz photon counting.

scholarly journals Pseudo-planar Ge-on-Si single photon avalanche diode detector with record low noise-equivalent power

2021 ◽  
Author(s):  
Ross W. Millar ◽  
Jaroslaw Kirdoda ◽  
Fiona E. Thorburn ◽  
Xin Yi ◽  
Zoë Greener ◽  
...  
Keyword(s):  
Single Photon ◽  
Low Noise ◽  
Noise Equivalent Power ◽  
Avalanche Diode ◽  
Diode Detector

Distribution of R- and S-Process Elements in the Galactic Halo

1988 ◽  
Vol 132 ◽  
pp. 501-506
Author(s):  
C. Sneden ◽  
C. A. Pilachowski ◽  
K. K. Gilroy ◽  
J. J. Cowan
Keyword(s):  
Heavy Element ◽  
Galactic Halo ◽  
Low Noise ◽  
Heavy Elements ◽  
Process Synthesis ◽  
Element Abundances ◽  
Halo Stars ◽  
Abundance Patterns ◽  
R Process ◽  
Process Elements

Current observational results for the abundances of the very heavy elements (Z>30) in Population II halo stars are reviewed. New high resolution, low noise spectra of many of these extremely metal-poor stars reveal general consistency in their overall abundance patterns. Below Galactic metallicities of [Fe/H] Ã −2, all of the very heavy elements were manufactured almost exclusively in r-process synthesis events. However, there is considerable star-to-star scatter in the overall level of very heavy element abundances, indicating the influence of local supernovas on element production in the very early, unmixed Galactic halo. The s-process appears to contribute substantially to stellar abundances only in stars more metal-rich than [Fe/H] Ã −2.

Microcalorimeters for X-Ray Spectroscopy

1988 ◽  
Vol 102 ◽  
pp. 41
Author(s):  
E. Silver ◽  
C. Hailey ◽  
S. Labov ◽  
N. Madden ◽  
D. Landis ◽  
...  
Keyword(s):  
High Resolution ◽  
High Efficiency ◽  
Thermal Response ◽  
Low Noise ◽  
High Resolution Spectroscopy ◽  
Superconducting Transition ◽  
Sapphire Substrates ◽  
Laboratory Plasmas ◽  
Adiabatic Demagnetization ◽  
Theoretical Predictions

The merits of microcalorimetry below 1°K for high resolution spectroscopy has become widely recognized on theoretical grounds. By combining the high efficiency, broadband spectral sensitivity of traditional photoelectric detectors with the high resolution capabilities characteristic of dispersive spectrometers, the microcalorimeter could potentially revolutionize spectroscopic measurements of astrophysical and laboratory plasmas. In actuality, however, the performance of prototype instruments has fallen short of theoretical predictions and practical detectors are still unavailable for use as laboratory and space-based instruments. These issues are currently being addressed by the new collaborative initiative between LLNL, LBL, U.C.I., U.C.B., and U.C.D.. Microcalorimeters of various types are being developed and tested at temperatures of 1.4, 0.3, and 0.1°K. These include monolithic devices made from NTD Germanium and composite configurations using sapphire substrates with temperature sensors fabricated from NTD Germanium, evaporative films of Germanium-Gold alloy, or material with superconducting transition edges. A new approache to low noise pulse counting electronics has been developed that allows the ultimate speed of the device to be determined solely by the detector thermal response and geometry. Our laboratory studies of the thermal and resistive properties of these and other candidate materials should enable us to characterize the pulse shape and subsequently predict the ultimate performance. We are building a compact adiabatic demagnetization refrigerator for conveniently reaching 0.1°K in the laboratory and for use in future satellite-borne missions. A description of this instrument together with results from our most recent experiments will be presented.

Quality films from carbon fiber evaporation for thorough coverage of TEM grids

1988 ◽  
Vol 46 ◽  
pp. 418-419
Author(s):  
N. Tempel ◽  
M. C. Ledbetter
Keyword(s):  
Electron Microscopy ◽  
High Resolution Electron Microscopy ◽  
Carbon Films ◽  
Low Noise ◽  
Vacuum Evaporation ◽  
High Yield ◽  
Good Adhesion ◽  
Noise Structure ◽  
Resolution Electron ◽  
Carbon Foils

Carbon films have been a support of choice for high resolution electron microscopy since the introduction of vacuum evaporation of carbon. The desirable qualities of carbon films and methods of producing them has been extensively reviewed. It is difficult to get a high yield of grids by many of these methods, especially if virtually all of the windows must be covered with a tightly bonded, quality film of predictable thickness. We report here a method for producing carbon foils designed to maximize these attributes: 1) coverage of virtually all grid windows, 2) freedom from holes, wrinkles or folds, 3) good adhesion between film and grid, 4) uniformity of film and low noise structure, 5) predictability of film thickness, and 6) reproducibility.Our method utilizes vacuum evaporation of carbon from a fiber onto celloidin film and grid bars, adhesion of the film complex to the grid by carbon-carbon contact, and removal of the celloidin by acetone dissolution. Materials must be of high purity, and cleanliness must be rigorously maintained.

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