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

Pramana

Utpal Nundy1¹ 

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

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

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

13.9 𝜇m radiation from the 1000–0110 transition can be obtained from a CO2 laser by saturating the 0001–1000, 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 1000 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.

【 授权许可】

Unknown