Near-Infrared Limitations To Silicon Photodetector Self-Calibration

1985 ◽  
Author(s):  
James M. Palmer
Keyword(s):  
Near Infrared ◽  
Self Calibration ◽  
Silicon Photodetector

scholarly journals Self-Calibration Phenomenon for Near-Infrared Clinical Measurements: Theory, Simulation, and Experiments

ACS Omega ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 2837-2844 ◽  
Author(s):  
Idit Feder ◽  
Hamootal Duadi ◽  
Ruchira Chakraborty ◽  
Dror Fixler
Keyword(s):  
Near Infrared ◽  
Self Calibration ◽  
Clinical Measurements

Enhanced near-infrared responsivity of silicon photodetector by the impurity photovoltaic effect

2015 ◽  
Vol 24 (4) ◽  
pp. 048501
Author(s):  
Ji-Ren Yuan ◽  
Hai-Bin Huang ◽  
Xin-Hua Deng ◽  
Xiao-Jun Liang ◽  
Nai-Gen Zhou ◽  
...  
Keyword(s):  
Near Infrared ◽  
Photovoltaic Effect ◽  
Impurity Photovoltaic Effect ◽  
Silicon Photodetector

scholarly journals 3D Calibration Test-Field for Digital Cameras Mounted on Unmanned Aerial Systems (UAS)

2018 ◽  
Vol 10 (12) ◽  
pp. 2017 ◽  
Author(s):  
Valeria-Ersilia Oniga ◽  
Norbert Pfeifer ◽  
Ana-Maria Loghin
Keyword(s):  
Near Infrared ◽  
Low Cost ◽  
Digital Camera ◽  
Field Measurements ◽  
Unmanned Aerial Systems ◽  
Test Field ◽  
Digital Cameras ◽  
Self Calibration ◽  
Technological Developments ◽  
Aerial Systems

Due to the large number of technological developments in recent years, UAS systems are now used for monitoring purposes and in projects with high precision demand, such as 3D model-based creation of dams, reservoirs, historical monuments etc. These unmanned systems are usually equipped with an automatic pilot device and a digital camera (photo/video, multispectral, Near Infrared etc.), of which the lens has distortions; but this can be determined in a calibration process. Currently, a method of “self-calibration” is used for the calibration of the digital cameras mounted on UASs, but, by using the method of calibration based on a 3D calibration object, the accuracy is improved in comparison with other methods. Thus, this paper has the objective of establishing a 3D calibration field for the digital cameras mounted on UASs in terms of accuracy and robustness, being the largest reported publication to date. In order to test the proposed calibration field, a digital camera mounted on a low-cost UAS was calibrated at three different heights: 23 m, 28 m, and 35 m, using two configurations for image acquisition. Then, a comparison was made between the residuals obtained for a number of 100 Check Points (CPs) using self-calibration and test-field calibration, while the number of Ground Control Points (GCPs) variedand the heights were interchanged. Additionally, the parameters where tested on an oblique flight done 2 years before calibration, in manual mode at a medium altitude of 28 m height. For all tests done in the case of the double grid nadiral flight, the parameters calculated with the proposed 3D field improved the results by more than 50% when using the optimum and a large number of GCPs, and in all analyzed cases with 75% to 95% when using a minimum of 3 GCP. In this context, it is necessary to conduct accurate calibration in order to increase the accuracy of the UAS projects, and also to reduce field measurements.

Monolithic Full-Stokes Near-Infrared Polarimetry with Chiral Plasmonic Metasurface Integrated Graphene–Silicon Photodetector

ACS Nano ◽  
2020 ◽  
Vol 14 (12) ◽  
pp. 16634-16642
Author(s):  
Lingfei Li ◽  
Junzhuan Wang ◽  
Lei Kang ◽  
Wei Liu ◽  
Li Yu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Silicon Photodetector

Amorphous silicon p–i–n on p crystalline silicon photodetector in the visible and near infrared spectrum

2000 ◽  
Vol 266-269 ◽  
pp. 1218-1222 ◽  
Author(s):  
Mario Tucci ◽  
Rosario De Rosa ◽  
Francesco Roca ◽  
Domenico Caputo ◽  
Giampiero de Cesare
Keyword(s):  
Infrared Spectrum ◽  
Amorphous Silicon ◽  
Near Infrared ◽  
Crystalline Silicon ◽  
Silicon Photodetector ◽  
Near Infrared Spectrum

Construction of a near-infrared responsive upconversion nanoplatform against hypoxic tumors via NO-enhanced photodynamic therapy

Nanoscale ◽  
2020 ◽  
Vol 12 (14) ◽  
pp. 7875-7887 ◽  
Author(s):  
Ying Lan ◽  
Xiaohui Zhu ◽  
Ming Tang ◽  
Yihan Wu ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Near Infrared ◽  
Upconversion Nanoparticles

A near-infrared (NIR) activated theranostic nanoplatform based on upconversion nanoparticles (UCNPs) is developed in order to overcome the hypoxia-associated resistance in photodynamic therapy by photo-release of NO upon NIR illumination.

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