Title :
CW submillimeter laser action in ethyl chloride
Author :
Bertolini, A. ; Carelli, G. ; Massa, C.A. ; Moretti, A. ; Strumia, F. ; Qiu, M.X. ; Mündlein, U.
Author_Institution :
Dipt. di Fisica, Pisa Univ., Italy
fDate :
2/1/1998 12:00:00 AM
Abstract :
We present ten new far-infrared (FIR) laser lines obtained by optically pumping ethyl chloride by means of a CW waveguide CO2 laser with a tunability range of 300 MHz. By means of a heterodyne technique and using, as mixing element, a metal-insulator-metal (MIM) point contact diode or a new home built metal-semiconductor diode, we measured the frequency of all these new lines, as well as that of another line, previously reported in literature. With our new lines, the total number of FIR laser lines emitted by ethyl chloride rises to 14; for each of them we give the offset relative to the center frequency of the pumping radiation, the polarization relative to that of the pumping CO2 laser, the relative intensity, and the optimum operation pressure. Seven of the new lines have frequencies in the 300-512-GHz range and four of them are strong enough to be used in high-field EPR spectroscopy
Keywords :
EPR spectroscopy; MIM devices; gas lasers; infrared sources; laser transitions; laser tuning; light polarisation; optical pumping; submillimetre wave lasers; 300 to 512 GHz; CO2; CW submillimeter laser action; CW waveguide CO2 laser; FIR laser lines; ethyl chloride; far-infrared laser lines; gas lasers; heterodyne technique; high-field EPR spectroscopy; laser frequency measurement; laser tuning; metal-insulator-metal point contact diode; metal-semiconductor diode; optically pumping; optimum operation pressure; pumping CO2 laser; relative intensity; tunability range; Diodes; Finite impulse response filter; Frequency; Laser excitation; Metal-insulator structures; Optical mixing; Optical pumping; Optical waveguides; Pump lasers; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
