Water vapor micropulse differential absorption lidar

Choonghoon Oh, Coorg R. Prasad, Victor A. Fromzel, In H. Hwang, John A. Reagan, Hui Fang, Manuel Rubio

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


By combining the capability of a differential absorption lidar (DIAL) and the excellent characteristics of a micro pulse lidar (MPL) we have designed and tested a micro pulse DIAL system, which could be operated from the ground or airborne platform, to monitor the atmospheric water vapor mixing ratio. To maintain the compact and rugged optical frame work of an MPL it employs a diode pumped tunable Cr:LiSAF laser operating at 825 - 840 nm range, a fiber optic beam delivery system, and an APD photon counting detector. The system parameters were optimized through extensive DIAL simulations, and the design concept was tested by building a breadboard lidar system. Based on the results of the simulations and the performance of the breadboard lidar the Micro Pulse DIAL system design has been refined to (1) minimize scattered laser light - the major source of signal induced bias, (2) permit near field measurements from less than 400 m, (3) produce a compact, rugged, eye-safe instrument with a day and night operating capability. The lidar system is expected to provide 150 m vertical resolution, high accuracy (approximately 5%), and 3 km range looking up from the ground.

Original languageEnglish (US)
Title of host publicationLaser Radar Technology and Applications IV
EditorsGary W. Kamerman, Christian Werner
Number of pages10
ISBN (Electronic)9780819431813
StatePublished - May 28 1999
EventLaser Radar Technology and Applications IV 1999 - Orlando, United States
Duration: Apr 6 1999Apr 9 1999

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherLaser Radar Technology and Applications IV 1999
Country/TerritoryUnited States


  • DIAL
  • Micro pulse lidar
  • Water vapor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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