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Linewidth characteristics of raman-shifted dye laser output at 720 and 940 nm (Document No: 19870000937)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Higdon, N. S. Grossmann, B. E. |
| Copyright Year | 1986 |
| Description | Existing DIAL systems for water vapor measurements in the troposphere operate at wavelengths near 720 nm. The use of stronger water vapor absorption lines in the range 930 to 960 nm will significantly improve DIAL measurements in the upper troposphere and lower stratosphere where water vapor concentrations are low. The generation of light at 940 nm using a frequency doubled Nd:YAG pumped dye laser is inefficient due to the small absorption if infrared dyes at the pump wavelength. However, 940 nm generation utilizing stimulated Raman scattering of dye lasers is attractive because of a potentially high conversion efficiency plus the possibility of retaining the narrow linewidth available from some dye lasers. The Raman conversion efficiency and line broadening are presented for first Stokes operation at 720 and 940 nm using hydrogen and deuterium as the Raman media. |
| File Size | 677291 |
| Page Count | 5 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870000937 |
| Archival Resource Key | ark:/13960/t9h46mg1s |
| Language | English |
| Publisher Date | 1986-08-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Raman Spectra Laser Outputs Atmospheric Composition Laser Pumping Yag Lasers Dye Lasers Absorption Spectra Line Spectra Water Vapor Spectral Line Width Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
