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

Volume

34

Issue

2

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

238

Lastpage

240

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;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.658701

Filename

658701