Characterization Of Advanced Avalanche Photodiodes For Water Vapor Lidar Receivers Nasa PDF Download
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Author | : |
Publisher | : DIANE Publishing |
Total Pages | : 62 |
Release | : |
Genre | : |
ISBN | : 1428996214 |
Download Characterization of advanced avalanche photodiodes for water vapor lidar receivers Book in PDF, ePub and Kindle
Author | : United States. National Aeronautics and Space Administration |
Publisher | : |
Total Pages | : |
Release | : 2003* |
Genre | : |
ISBN | : |
Download Characterization of Advanced Avalanche Photodiodes for Water Vapor Lidar Receivers ... Nasa Book in PDF, ePub and Kindle
Author | : Tamer F. Refaat |
Publisher | : DIANE Publishing |
Total Pages | : 66 |
Release | : 2000 |
Genre | : |
ISBN | : |
Download Characterization of Advanced Avalanche Photodiodes for Water Vapor Lidar Receivers Book in PDF, ePub and Kindle
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 62 |
Release | : 2018-05-29 |
Genre | : |
ISBN | : 9781720414407 |
Download Characterization of Advanced Avalanche Photodiodes for Water Vapor Lidar Receivers Book in PDF, ePub and Kindle
Development of advanced differential absorption lidar (DIAL) receivers is very important to increase the accuracy of atmospheric water vapor measurements. A major component of such receivers is the optical detector. In the near-infrared wavelength range avalanche photodiodes (APD's) are the best choice for higher signal-to-noise ratio, where there are many water vapor absorption lines. In this study, characterization experiments were performed to evaluate a group of silicon-based APD's. The APD's have different structures representative of different manufacturers. The experiments include setups to calibrate these devices, as well as characterization of the effects of voltage bias and temperature on the responsivity, surface scans, noise measurements, and frequency response measurements. For each experiment, the setup, procedure, data analysis, and results are given and discussed. This research was done to choose a suitable APD detector for the development of an advanced atmospheric water vapor differential absorption lidar detection system operating either at 720, 820, or 940 nm. The results point out the benefits of using the super low ionization ratio (SLIK) structure APD for its lower noise-equivalent power, which was found to be on the order of 2 to 4 fW/Hz(sup (1/2)), with an appropriate optical system and electronics. The water vapor detection systems signal-to-noise ratio will increase by a factor of 10.Refaat, Tamer F. and Halama, Gary E. and DeYoung, Russell J.Langley Research CenterDIFFERENTIAL ABSORPTION LIDAR; ATMOSPHERIC MOISTURE; AVALANCHE DIODES; MOISTURE METERS; PHOTODIODES; RADAR RECEIVERS; WATER VAPOR; CHARACTERIZATION; RADAR MEASUREMENT; FREQUENCY RESPONSE; IONIZATION; NOISE REDUCTION; SIGNAL TO NOISE RATIOS; ELECTRIC POTENTIAL; NOISE MEASUREMENT
Author | : Tamer F. Refaat |
Publisher | : |
Total Pages | : 0 |
Release | : 2000 |
Genre | : Diodes, Avalanche |
ISBN | : |
Download Characterization of Advanced Avalanche Photodiodes for Water Vapor Lidar Receivers Book in PDF, ePub and Kindle
This research was done to choose a suitable APD detector for the development of an advanced atmospheric water vapor differential absorption lidar detection system operating either at 720, 820, or 940 nm. The results point out the benefits of using the super low ionization ratio (SLIK) structure APD for its lower noise-equivalent power, which was found to be on the order of 2 to 4 fW/Hz 1/2, with an appropriate optical system and electronics. The water vapor detection systems signal-to-noise ratio will increase by a factor of 10.
Author | : |
Publisher | : DIANE Publishing |
Total Pages | : 155 |
Release | : |
Genre | : |
ISBN | : 1428996176 |
Download Advanced atmospheric water vapor DIAL detection system Book in PDF, ePub and Kindle
Author | : National Aeronautics and Space Adm Nasa |
Publisher | : Independently Published |
Total Pages | : 44 |
Release | : 2018-09-19 |
Genre | : Science |
ISBN | : 9781723825002 |
Download Design of Advanced Atmospheric Water Vapor Differential Absorption Lidar (Dial) Detection System Book in PDF, ePub and Kindle
The measurement of atmospheric water vapor is very important for understanding the Earth's climate and water cycle. The lidar atmospheric sensing experiment (LASE) is an instrument designed and operated by the Langley Research Center for high precision water vapor measurements. The design details of a new water vapor lidar detection system that improves the measurement sensitivity of the LASE instrument by a factor of 10 are discussed. The new system consists of an advanced, very low noise, avalanche photodiode (APD) and a state-of-the-art signal processing circuit. The new low-power system is also compact and lightweight so that it would be suitable for space flight and unpiloted atmospheric vehicles (UAV) applications. The whole system is contained on one small printed circuit board (9 x 15 sq cm). The detection system is mounted at the focal plane of a lidar receiver telescope, and the digital output is read by a personal computer with a digital data acquisition card.Refaat, Tamer F. and Luck, William S., Jr. and DeYoung, Russell J.Langley Research CenterATMOSPHERIC MOISTURE; WATER VAPOR; DESIGN ANALYSIS; DIFFERENTIAL ABSORPTION LIDAR; DETECTION; AVALANCHES; SENSITIVITY; LOW NOISE; PHOTODIODES; SIGNAL PROCESSING; PRINTED CIRCUITS; LOW WEIGHT; SIGNAL TO NOISE RATIOS; ATMOSPHERIC SOUNDING
Author | : Yoon Soo Park |
Publisher | : World Scientific |
Total Pages | : 413 |
Release | : 2003-01-29 |
Genre | : Technology & Engineering |
ISBN | : 9814487082 |
Download Frontiers In Electronics: Future Chips, Proceedings Of The 2002 Workshop On Frontiers In Electronics (Wofe-02) Book in PDF, ePub and Kindle
The 2002 Workshop on Frontiers in Electronics was the third in the series of WOFE workshops. Over 70 leading experts from academia, industry, and government agencies reported on the most recent developments in their fields and exchanged views on future trends and directions of the electronics and photonics industry. The issues they addressed ranged from system-on-chip to DNA doping, from ultrathin SOI to electrotextiles, from photonics integration on the ULSI platform to wide band gap semiconductor devices and solid state lighting. The rapid pace of electronic technology evolution compels a merger of different technical areas, and WOFE-02 provided a unique opportunity for cross-fertilization of the emerging fields of microelectronics, photonics, and nanoelectronics. The workshop was informal and stimulated provocative views, visionary outlooks, and discussions on controversial issues.
Author | : |
Publisher | : |
Total Pages | : 162 |
Release | : 2001 |
Genre | : |
ISBN | : |
Download NASA Langley Scientific and Technical Information Output 2000 Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 882 |
Release | : 2003 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalog of United States Government Publications Book in PDF, ePub and Kindle