LANG, PT and SCHATZ, W and KASS, T and SEMENOV, AD and RENK, KF (1992) FAR-INFRARED EMISSION FROM AN OPTICALLY PUMPED OVERTONE RAMAN CH3I LASER. OPTICS LETTERS, 17 (7). pp. 502-504. ISSN 0146-9592,
Full text not available from this repository.Abstract
We report what is to our knowledge the first generation of far-infrared laser radiation by stimulated Raman scattering resonantly enhanced by an overtone vibrational-rotational transition. Using a frequency-tunable high-pressure CO2 laser as the pump source, we obtained laser emission in the frequency range from 12 to 27 cm-1 by optical pumping of gaseous CH3I near resonant vibrational-rotational transitions of the 2-nu-3 overtone and the nu-6 fundamental band. Overtone Raman transitions involving the nondegenerate nu-3 vibration were found to show higher efficiency than Raman transitions within the fundamental band of the twofold-degenerated nu-6 vibration. From the studies of the temporal behavior of the far-infrared laser emission, we estimate a bandwidth of approximately 200 MHz for the Raman gain regions for both the 2-nu-3 overtone and the nu-6 fundamental transitions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FIR LASER; TUNING CHARACTERISTICS; NH3; TRANSITIONS; CO2-LASER; OPERATION; PULSES; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54591 |
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