TY - GEN
T1 - Eye-safe visible wavelength lidar
AU - Cooley, T. W.
AU - Reagan, J. A.
N1 - Publisher Copyright:
© IEEE 1992.
PY - 1992
Y1 - 1992
N2 - Recent technological advances on several fronts offer the possibility for relatively low-cost, eye-safe visible wavelength lidar systems for autonomous aerosol/environmental monitoring applications. In the area of lasers, diode pumped Q-switched lasers are now available at relatively low cost which offer pulse outputs of a millijoule at repetition rates upwards of 10 kHz. Next) improved silicon photodiodes and avalanche photodiodes have become available which offer high quantum efficiency detection at very low dark counts (10 to 1000 counts/sec) and which can be used in a photon counting mode for signal plus background and dark current photoelectron count rates of MHz. Finally, high-speed analog to digital converters and counters are now available at relatively low-cost which can be coupled through logic interfaces to PC's to realize the accurate, high speed data processing systems required to handle kHz level laser pulse repetition frequencies. This paper outlines the essential requirements and features of a possible lidar system which capitalizes on technical advances on several fronts. A baseline lidar system is suggested for monitoring tropospheric and stratospheric aerosols. Sensitivity to wavelength background radiation, detector characteristics and other system parameters is discussed for several simulated data sets.
AB - Recent technological advances on several fronts offer the possibility for relatively low-cost, eye-safe visible wavelength lidar systems for autonomous aerosol/environmental monitoring applications. In the area of lasers, diode pumped Q-switched lasers are now available at relatively low cost which offer pulse outputs of a millijoule at repetition rates upwards of 10 kHz. Next) improved silicon photodiodes and avalanche photodiodes have become available which offer high quantum efficiency detection at very low dark counts (10 to 1000 counts/sec) and which can be used in a photon counting mode for signal plus background and dark current photoelectron count rates of MHz. Finally, high-speed analog to digital converters and counters are now available at relatively low-cost which can be coupled through logic interfaces to PC's to realize the accurate, high speed data processing systems required to handle kHz level laser pulse repetition frequencies. This paper outlines the essential requirements and features of a possible lidar system which capitalizes on technical advances on several fronts. A baseline lidar system is suggested for monitoring tropospheric and stratospheric aerosols. Sensitivity to wavelength background radiation, detector characteristics and other system parameters is discussed for several simulated data sets.
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U2 - 10.1109/IGARSS.1992.578832
DO - 10.1109/IGARSS.1992.578832
M3 - Conference contribution
AN - SCOPUS:84964527161
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 1693
EP - 1695
BT - IGARSS 1992 - International Geoscience and Remote Sensing Symposium
A2 - Williamson, Ruby
A2 - Stein, Tammy
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th Annual International Geoscience and Remote Sensing Symposium, IGARSS 1992
Y2 - 26 May 1992 through 29 May 1992
ER -