Accession Number:

ADA458339

Title:

Studies by a Mesospheric Sodium Guidestar Pumped by Continuous Wave Sum-Frequency Mixing of Two Nd: YAG Laser in Lithium Triborate (Preprint)

Descriptive Note:

Conference Paper 1 Oct 2002-30 Apr 2006

Corporate Author:

AIR FORCE RESEARCH LAB KIRTLAND AFB NM

Personal Author(s):

Report Date:

2006-05-16

Pagination or Media Count:

11.0

Abstract:

Mesospberic sodium guidestar radiance is plotted vs. wavelength, fasor power, fasor polarization and date Peak radiance for circular polarization was about 7000 photonssecsq cm Vl magnitude 5.1 for 30 watts of pump power in November of 2005. Pumping with circular polarization at high power produces about 2 times more return than linear polarization. Pumping D2a at high power produces about 12 times more return than pumping D2b. A lidar equation is used to determine column density. Patimated maximum possible guidestar radiance is about 3 times greater than measured values. Guidestar radiance may be saturated by atoms becoming trapped in F 1 and atomic recoil.

Subject Categories:

  • Atmospheric Physics
  • Inorganic Chemistry
  • Lasers and Masers
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE