Abstract
By means of an iteration method and taking into account the broadening of the infrared pumping laser, the spectrum of a miniature, optically pumped, superradiant NH3 submillimeter-wave(SMMW) gas laser pumped by CO2-10R(8) has been calculated and studied by solving density matrix equations. Experimentally, the interferogram of miniature SMMW laser pumped by a TEA-CO2 laser with 10R(8) line is measured. This is the first time that the theoretical spectrum has been in good agreement with experimental results.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
T.Y. Chang and T.J. Bridges, “Laser action at 452, 496 and 541 μm in optically pumped CH3F,” Opt. Commum., vol.9,no.1, pp.423-426, 1970.
G. Dodel, “On the history of far-infrared (FIR) gas lasers: Thirty-five years of research and application,” Infrared Phys. Thchnol., vol.40, pp.127-139, 1999.
X. Luo, J. Zhou, B. Qiu, and Y. Lin. “A very short optically pumped FIR superradiant laser,” Int. J. Infrared Millim. Waves, vol.10,no.2, pp.237-249, 1989.
Y. Li, X. Luo, and Y. Lin, “Transverse feedback enhancement effect in miniature optically pumped far-infrared laser,” Infrared Phys., vol.32, pp.251-258, 1991.
Y. Lin, X. Zheng, X. Luo, and X. Lin, “Self-absorption effect and scattering loss revision for the optically pumped far-infrared laser,” Chinese J. Infrared Millim. Waves, vol.10,no.5, pp.427-433, 1991.
J. Qin, X. Zheng, X. Luo, C. Li, and Y. Lin, “Spikes in Raman spectrum of miniature optically pumped NH3 FIR laser,” Int. J. Infrared Millim. Waves, vol.17,no.6, pp.1055-1062, 1996.
X. Zheng, X. Luo, C. Lin, and Y. Lin, “Interaction of multi-Raman processes in miniature optically pumped NH3 FIR laser,” Int. J. Infrared Millim. Waves, vol.16,no.12, pp.2173-2179, 1996.
J. Qin, X. Zheng, X. Luo, X. Huang, and Y. Lin, “Study on spectral characteristics and operating parameters of optically pumped NH3 FIR cavity laser,” IEEE J. Quantum. Electron., vol.34,no.1, pp.32-38, 1998.
G.D. Willenberg, and J. Heppner, “Interaction of three coherent fields with Doppler broadened serial four-level systems: application to four-level FIR lasers,” IEEE J. Quantum. Electron., vol.18,no.12, pp.2060-2069, 1982.
D.J. Kim, and P.D. Coleman, “Stimulated Hyper-Raman scattering in a molecular gas via a three-photon process to obtain IR and Far IR radiation,” IEEE J. Quantum. Electron., vol.16,no.3, pp.300-307,1980.
G.D. Willenberg, U. Hubner and J. Heppner, “Far-infrared cw Raman lasing in NH3,” Opt. Commun., vol.32,no.2, pp.193-196, 1980.
Y. Ran, T. Zhang, and J. Qin, “Spectra of optically pumped superradiant and cavity NH3 far-infrared laser,” Int. J. Infrared Millim. Waves, vol.18,no.10, pp.1917-1925, 1997
X. Li, and J. Qin, “Study on Stark effect in optically pumped Far-infrared laser,” Int. J. Infrared Millim. Waves, vol.21,no.1, 2000.
X. Zheng, Y. Li, Y. Lin, and B. Chen. “Si-Al grid submillimeter wave F-P interferometer and its application to laser spectrum observation,” Chinese J. Infrared Millim. Waves, vol.12,no.3, pp.229-232, 1993.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Qin, J., Liu, D., Wei, L. et al. Study on the Spectrum of Miniature Optically Pumped NH3 Submillimeter-Wave Laser. International Journal of Infrared and Millimeter Waves 23, 255–265 (2002). https://doi.org/10.1023/A:1015022301899
Issue Date:
DOI: https://doi.org/10.1023/A:1015022301899