Title :
Characterization of new FIR laser lines from CD3-rocking and asymmetric CD3 deformation modes of 13CD3 OD
Author :
Viscovini, R.C. ; Telles, Edjar Martins ; Scalabrin, Artemio ; Pereira, Daniel
Author_Institution :
Inst. de Fisica, UNICAMP, Campinas, Brazil
fDate :
11/1/1999 12:00:00 AM
Abstract :
In this paper, we report new optically pumped far-infrared (FIR) laser lines from the in-plane CD3-rocking and asymmetric CD 3 deformation absorption vibrational bands of 13CD 3OD. A waveguide CO2 laser of wide tunability (290 MHz) was used as the pump source, and a Fabry-Perot open cavity as the FIR laser resonator. Optoacoustic absorption spectrum was used as a guide to search for new FIR laser lines. We could observe 13 new laser lines in the range 103-491 μm. The lines were characterized according to wavelength, relative polarization, relative intensity, and optimum working pressure. The transferred lamb-dip technique was used to measure the frequency absorption transition for both new and previously reported laser lines
Keywords :
carbon compounds; gas lasers; infrared sources; laser cavity resonators; laser transitions; laser tuning; laser variables measurement; optical pumping; photoacoustic spectra; vibrational states; 103 to 491 mum; 13CD3OD; CD3 deformation absorption vibrational bands; CD3 rocking modes; CO2; CO2 gas laser; FIR laser lines; FIR laser resonator; Fabry-Perot open cavity; asymmetric CD3 deformation modes; deuterated methanol; frequency absorption transition; optically pumped far-infrared laser lines; optimum working pressure; optoacoustic absorption spectrum; pump source; relative intensity; relative polarization; transferred lamb-dip technique; waveguide CO2 laser; wide tunability; Absorption; Fabry-Perot; Finite impulse response filter; Laser excitation; Laser transitions; Optical pumping; Optical resonators; Optical waveguides; Pump lasers; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
