Theoretical gain spectrum of far-infrared Raman lasers

The four-level density matrix theory of the Raman FIR laser is extended to include arbitrary pump and emission field strengths and arbitrary pump frequency offsets from resonance. The results accommodate the full range of spectral variation that is observed when CH/sub 3/F Raman FIR lasers are opera...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1989-08, Vol.25 (8), p.1879-1883
Main Authors: Rai, J., Izatt, J.R.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Finite impulse response filter
Fundamental areas of phenomenology (including applications)
Laser excitation
Laser modes
Laser theory
Laser transitions
Laser tuning
Nonlinear optics
Optics
Physics
Power lasers
Pump lasers
Resonance
Tunable circuits and devices
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Summary:The four-level density matrix theory of the Raman FIR laser is extended to include arbitrary pump and emission field strengths and arbitrary pump frequency offsets from resonance. The results accommodate the full range of spectral variation that is observed when CH/sub 3/F Raman FIR lasers are operated at widely differing values of the rotational quantum number J. The extended theory is also useful for optimizing the temperature and pressure of these broadly tunable lasers to achieve maximum spectral coverage.< >
ISSN:0018-9197
1558-1713
DOI:10.1109/3.34048