Title :
Theoretical gain spectrum of far-infrared Raman lasers
Author :
Rai, Jagdish ; Izatt, Jerald R.
Author_Institution :
Dept. of Phys. & Astron., Alabama Univ., Tuscaloosa, AL, USA
fDate :
8/1/1989 12:00:00 AM
Abstract :
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 CH3F 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
Keywords :
Raman lasers; laser theory; laser transitions; laser tuning; organic compounds; arbitrary pump frequency offsets; broadly tunable lasers; emission field strengths; far-infrared Raman lasers; fluoromethane Raman laser; four-level density matrix theory; maximum spectral coverage; pressure; resonance; rotational quantum number; spectral variation; temperature; theoretical gain spectrum; Finite impulse response filter; Laser excitation; Laser modes; Laser theory; Laser transitions; Laser tuning; Power lasers; Pump lasers; Resonance; Tunable circuits and devices;
Journal_Title :
Quantum Electronics, IEEE Journal of
