Title :
The vinyl bromide optically pumped far infrared laser: new large offset emissions
Author :
Moretti, A. ; Bertolini, A. ; Carelli, G. ; Nannizzi, M. ; Moraes, J.C.S.
Author_Institution :
GNSM, CNR, Pisa, Italy
fDate :
4/1/2001 12:00:00 AM
Abstract :
We present the results of a study on vinyl bromide in the search for new far infrared (FIR) laser lines. As the pump source, we use a CW waveguide CO2 laser with a tunability of 290 MHz around each line in order to pump large offset vibrational transitions. As a consequence, we obtained 28 new FIR laser emissions; 24 of them have wavelengths greater than 500 μm and are, therefore, suitable to be used in high-field EPR spectroscopy. For each of the new lines, we give the wavelength, the offset of the pumping transition with respect to the center frequency of the CO2 emission, the polarization relative to that of the pumping laser line, the operating pressure, and the relative intensity. We also present a catalog including data of all of the FIR laser lines observed from this molecule up to now
Keywords :
gas lasers; laser transitions; optical pumping; organic compounds; submillimetre wave generation; submillimetre wave lasers; vibrational states; 500 mum; CO2; CW waveguide CO2 laser; FIR laser lines; center frequency; high-field EPR spectroscopy; large offset vibrational transitions; new large offset emissions; operating pressure; polarization; pump source; pumping laser line; pumping transition; relative intensity; tunability; vinyl bromide optically pumped far infrared laser; Finite impulse response filter; Laser excitation; Laser transitions; Optical pumping; Optical waveguides; Paramagnetic resonance; Pump lasers; Spectroscopy; Waveguide lasers; Waveguide transitions;
Journal_Title :
Quantum Electronics, IEEE Journal of
