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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 2, Iss. 5 — May. 1, 1985
  • pp: 807–814

Dynamics of the N2O laser as measured with a tunable-diode laser

K. E. Fox and J. Reid  »View Author Affiliations


JOSA B, Vol. 2, Issue 5, pp. 807-814 (1985)
http://dx.doi.org/10.1364/JOSAB.2.000807


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Abstract

A tunable-diode laser operating in the 2120–2350-cm−1 wave-number region is used to probe a conventional cw N2O laser discharge. Absorption lines in more than 10 different vibrational bands are observed, enabling us to determine vibrational populations in all levels of concern to the dynamics of the 10-μm N2O laser. The populations in the three normal modes of vibration of N2O are found to follow Boltzmann distributions, with the ν1 and ν2 modes maintaining a common vibrational temperature under all discharge conditions. The factors limiting the small-signal 10-μm gain are investigated in detail, and it is found that electron deexcitation of the 00°1 level is much more important than N2O dissociation.

© 1985 Optical Society of America

History
Original Manuscript: October 16, 1984
Manuscript Accepted: December 18, 1984
Published: May 1, 1985

Citation
K. E. Fox and J. Reid, "Dynamics of the N2O laser as measured with a tunable-diode laser," J. Opt. Soc. Am. B 2, 807-814 (1985)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-2-5-807


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References

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  31. The experimental points shown in Fig. 6 have been corrected for the absorption that occurs in the nondischarge portion of the tube. This correction is significant for the low-lying levels, such as 0110, but has little effect for levels such as 0330. The fitted value of α(00°0), as derived for Fig. 5, is used in the calculations of Nijl0. The combined effect of these procedures produces a linear least-squares fit to the data points, which need not pass exactly through the point (0, 0).
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