Frequency-shift measurements of the Q(1) and Q(2) lines of H/sub 2/ using high-resolution c-w Coherent Anti-Stokes Raman Spectroscopy. Master's thesis, June-October 1986
Linear and quadratic frequency shift coefficients were determined for the Q(1) and Q(2) lines of hydrogen using cw Coherent Anti-Stokes Raman Spectroscopy (CARS). The linear coefficients were accurate to three significant digits which is an order of magnitude better than any other published results. The quadratic coefficients were comparable to other reported results because of the range of pressures investigated in this study. Frequency stabilization of the argon-ion laser allowed accurate measurements of the frequency shifts over a range of 2 to 40 atmospheres. A Fabry-Perot interferometer provides a relative-frequency marker and iodine absorption peaks provided an absolute-frequency reference. The coefficients determined were compared to those calculated by other researchers using different experimental methods. The high accuracy of the measurements added further credence to the effectiveness of cw CARS as a high-resolution spectroscopic tool.
- Research Organization:
- Air Force Inst. of Tech., Wright-Patterson AFB, OH (USA). School of Engineering
- OSTI ID:
- 6348536
- Report Number(s):
- AD-A-179390/0/XAB; AFIT/GEP/ENP-86D-5
- Country of Publication:
- United States
- Language:
- English
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