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PRESSURE‐ AND CURRENT‐DEPENDENT SHIFTS IN THE CENTER FREQUENCY OF THE DOPPLER‐BROADENED (2p 4 → 3s 2) 6328‐Å 20Ne TRANSITION
1.Pressure shift measurements in Zeeman discharge cells were first reported by E. F. Labuda, E. I. Gordon, and A. D. White at the Electron Device Research Conference, Ithaca, N.Y., June 1964.
2.W. R. C. Rowley and D. C. Wilson, Nature 745, (Nov. 1963);
2.K. Shimoda and A. Javan, J. Appl. Phys. (Pt. 1) 36, 718 (1965);
2.W. R. Bennett et al., Appl. Phys. Letters 5, 56 (1964);
2.I. Tobias et al., Appl. Phys. Letters 6, 198 (1965).
3.A. D. White, E. I. Gordon, and E. F. Labuda, Appl. Phys. Letters 5, 97 (1964);
3.A. D. White, IEEE J. Quantum Electronics QE‐1, 349 (1965).
4.A. L. Bloom and D. L. Wright, Appl. Opt. 5, 1528 (1966).
5.E. Engelhard, Z. Angew. Phys. 20(5), 404 (1966).
6.Spectra Physics Model 119B.
7.K. M. Baird and D. S. Smith, J. Opt. Soc. Am. 52, 507 (1962).
8.These results are in substantial agreement with unpublished measurements by E. F. Labuda who found negligible current shift and a linear pressure shift of (direction of shift not determined) for the 3.39‐μ 20Ne transition and between 15 to 20 Mc/torr for the 6328‐Å transition.
9.Shang‐yi Chén and Makoto Takeo, Revs. Modern Phys. 8, 22 (1936).
10.Studies at MIT have shown that the position of the Lamb dip, relative to the sides of the Doppler line, shifts with pressure (private communication from A. Javan).
11.Gas clean‐up in sealed‐off lasers has been measured by R. Turner et al., Rev. Sci. Instr. 35, 996 (1964).
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