• Generation of 13.9 𝜇m radiation from CO2 by cascade lasing or externally applied CO2 laser

• Fulltext

Permanent link:
https://www.ias.ac.in/article/fulltext/pram/075/05/0895-0899

• Keywords

CO2 laser; Q-switching; generation of 14 𝜇m radiation from CO2; cascade lasing; E-beam-controlled discharge.

• Abstract

13.9 𝜇m radiation from the $10^{0}0–01^{1}0$ transition can be obtained from a CO2 laser by saturating the 00$^{0}1–10^{0}0$, 10.6 𝜇m transition with an internally generated q-switched pulse or by the application of an external 10.6 𝜇m pulse. Because of Fermi resonance between the symmetric stretch and the bending modes, decay of population from the $10^{0}0$ level is fast, and such lasers operate at low power and energies. A theoretical model was developed to study such lasers. The results of the calculations indicate that a large-aperture E-beam-sustained discharge is effective for excitation of the cryogenically cooled gain medium, which uses He rich mixture at low pressure. The system is scalable and capable of generating large powers and energies.

• Author Affiliations

1. BH-2-76, Kendriya Vihar, Kharghar, Sector-11, Navi Mumbai 410 210, India

• Pramana – Journal of Physics

Volume 96, 2022
All articles
Continuous Article Publishing mode

• Editorial Note on Continuous Article Publication

Posted on July 25, 2019

Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.