Mjollnir Rotational Line Scan Diagnostics.
MATHEMATICAL SCIENCES NORTHWEST INC BELLEVUE WASH
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The rotational line scan diagnostic technique described in this report can be used to derive the time history of the rotational temperature, the ground state DF population and the population in the first excited state during the output pulse of an atmospheric pressure DF laser from measurements of gainabsorption on three adjacent rotational lines in the 1-0 vibrational band. A description of the theoretical foundations of this technique is given together with sample calculations for typical pulsed DF laser conditions. An experimental system using a low pressure cw probe laser has been assembled for application on the AFWK Mjollnir laser. The design, assembly, alignment and operation of this diagnostic system are described in detail. Within operational limitations imposed by the probe laser, the performance of the diagnostic system has been verified using a pulsed gain cell. Author
- Lasers and Masers