论文信息 - Gain measurements on the sequence bands in a TEA‐CO2 amplifier

Gain measurements on the sequence bands in a TEA‐CO2 amplifier

Small‐signal gains as high as 1.5% cm−1 have been measured in a TEA‐CO2 amplifier on the 00°2‐ (1001, 0201)I,II sequence bands. The ratio of the gain coefficient of the sequence bands over the gain coefficient of the regular bands has been observed to be independent of either the CO2 or He proportion in the gas mixture. It has also been found to increase with the electrical energy dumped into the active medium and to reach a value of 1/3 at an excitation density of 140 J/l. Gain on the sequence bands has been found to be responsible for the anomalously high gain coefficient that is measured at low J values of the R branch of the regular 9.4‐μm transition in TEA amplifiers.

P. Lavigne | J. Lachambre | G. Otis

[1] K. Siemens,et al. Heterodyne frequency measurements of CO2 laser sequence-band transitions , 1977 .

[2] K. Siemsen,et al. Laser power and gain measurements on the sequence bands of CO2 , 1977 .

[3] E. M. Kudryavtsev,et al. Analysis of the data on spontaneous emission probabilities and collisional broadening cross sections of 0001-1000 lines of the CO2 molecule , 1976 .

[4] P. Kelley,et al. Molecular absorption of infrared laser radiation in the natural atmosphere , 1976 .

[5] R. Fedosejevs,et al. Gain characteristics of a multiatmosphere UV-preionized CO 2 laser , 1975 .

[6] H. Pépin,et al. One nanosecond CO2 laser chain for laser–target interaction studies , 1975 .

[7] L. Taylor,et al. Rotational temperature determinations in molecular gas lasers , 1975 .

[8] G. Schappert,et al. Rotational temperature in a high‐pressure pulsed CO2 laser , 1975 .

[9] S. Singer. Observations of anomalous gain coefficients in TEA double-discharge CO 2 lasers , 1974 .

[10] R. Lang,et al. Gain measurements in a tea CO2 laser , 1974 .

[11] F. Rheault,et al. Performance characteristics of a TEA double-discharge grid amplifier , 1973 .

[12] A. Laflamme. Double discharge excitation for atmospheric pressure CO2 lasers , 1970 .

[13] C. Patel,et al. Continuous-Wave Laser Action on Vibrational-Rotational Transitions of C O 2 , 1964 .