Stark effect applicable to optically pumped far-infrared laser
Abstract
Absorption measurements at CO2 laser frequencies were carried out as a function of Stark fields and CH3OH gas pressures to assess the effect of low electric field Stark tuning on methanol absorption at the P(12) 9.4 micron CO2 laser line, in a continuing search for coherent emitters at submillimeter wavelengths (far infrared). The line center absorption coefficient is found to increase five-fold with a 2.3 kV/cm Stark field at the 220 mtorr methanol pressure optimal for methanol far infrared lasing. The low electric field Stark tuning encourages efforts to enhance the pumping efficiency of a methanol far infrared laser at its normal optimum operating pressure, and suggests that significant Stark field induced frequency modulation of the far IR laser output is feasible.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- October 1976
- DOI:
- 10.1109/JQE.1976.1069053
- Bibcode:
- 1976IJQE...12..647C
- Keywords:
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- Carbon Dioxide Lasers;
- Far Infrared Radiation;
- Infrared Lasers;
- Optical Pumping;
- Stark Effect;
- Tuning;
- Absorptance;
- Frequency Control;
- Power Efficiency;
- Submillimeter Waves;
- Lasers and Masers