Abstract

A simple and inexpensive frequency stabilization system of a helium–neon two-mode laser with an internal mirror plasma tube is described. The stabilization depends on the comparison of the light intensities of the two operating longitudinal modes. The corresponding frequencies of the modes are symmetrized about the emission line of neon at the transition 3s2–2p4. Experimental results are given. The relative uncertainty of the frequency stabilization is less than 1 part in 107.

© 1972 Optical Society of America

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References

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  1. W. R. Bennett, S. F. Jacobs, J. T. Latourette, P. Rabinowitz, Appl. Phys. Lett. 5, 56 (1964).
    [CrossRef]
  2. Spectra-Physics, Inc., Model 119 Gas Laser, Operation and Maintenance Manual (1966).
  3. A. D. White, IEEE J. Quantum Electron. QE-1, 349 (1965).
    [CrossRef]
  4. Siemens AG, Tech. Information: Der Siemens He-Ne Laser LG 65, WR INF 340169 (1969).
  5. F. Spieweck, Z. Naturforsch. 22a, 2067 (1967).
  6. Ch. Hoffrogge, F. Lebowsky, PTB-Mitt. 79, 3 (1969).
  7. K. D. Mielenz, K. F. Nefflen, W. R. C. Rowley, D. C. Wilson, E. Engelhard, Appl. Opt. 7, 289 (1968).
    [CrossRef] [PubMed]

1969 (1)

Ch. Hoffrogge, F. Lebowsky, PTB-Mitt. 79, 3 (1969).

1968 (1)

1967 (1)

F. Spieweck, Z. Naturforsch. 22a, 2067 (1967).

1965 (1)

A. D. White, IEEE J. Quantum Electron. QE-1, 349 (1965).
[CrossRef]

1964 (1)

W. R. Bennett, S. F. Jacobs, J. T. Latourette, P. Rabinowitz, Appl. Phys. Lett. 5, 56 (1964).
[CrossRef]

Bennett, W. R.

W. R. Bennett, S. F. Jacobs, J. T. Latourette, P. Rabinowitz, Appl. Phys. Lett. 5, 56 (1964).
[CrossRef]

Engelhard, E.

Hoffrogge, Ch.

Ch. Hoffrogge, F. Lebowsky, PTB-Mitt. 79, 3 (1969).

Jacobs, S. F.

W. R. Bennett, S. F. Jacobs, J. T. Latourette, P. Rabinowitz, Appl. Phys. Lett. 5, 56 (1964).
[CrossRef]

Latourette, J. T.

W. R. Bennett, S. F. Jacobs, J. T. Latourette, P. Rabinowitz, Appl. Phys. Lett. 5, 56 (1964).
[CrossRef]

Lebowsky, F.

Ch. Hoffrogge, F. Lebowsky, PTB-Mitt. 79, 3 (1969).

Mielenz, K. D.

Nefflen, K. F.

Rabinowitz, P.

W. R. Bennett, S. F. Jacobs, J. T. Latourette, P. Rabinowitz, Appl. Phys. Lett. 5, 56 (1964).
[CrossRef]

Rowley, W. R. C.

Spieweck, F.

F. Spieweck, Z. Naturforsch. 22a, 2067 (1967).

White, A. D.

A. D. White, IEEE J. Quantum Electron. QE-1, 349 (1965).
[CrossRef]

Wilson, D. C.

Appl. Opt. (1)

Appl. Phys. Lett. (1)

W. R. Bennett, S. F. Jacobs, J. T. Latourette, P. Rabinowitz, Appl. Phys. Lett. 5, 56 (1964).
[CrossRef]

IEEE J. Quantum Electron. (1)

A. D. White, IEEE J. Quantum Electron. QE-1, 349 (1965).
[CrossRef]

PTB-Mitt. (1)

Ch. Hoffrogge, F. Lebowsky, PTB-Mitt. 79, 3 (1969).

Z. Naturforsch. (1)

F. Spieweck, Z. Naturforsch. 22a, 2067 (1967).

Other (2)

Siemens AG, Tech. Information: Der Siemens He-Ne Laser LG 65, WR INF 340169 (1969).

Spectra-Physics, Inc., Model 119 Gas Laser, Operation and Maintenance Manual (1966).

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Figures (5)

Fig. 1
Fig. 1

Illustration of a laser operating with two modes (1, 2) by means of the gain profile. The numbers indicate the sequence of the modes.

Fig. 2
Fig. 2

Separation of the two modes that are orthogonally polarized (a) with a Wollaston prism and (b) with two Brewster plates.

Fig. 3
Fig. 3

Block diagram of the automatic control loop.

Fig. 4
Fig. 4

Features of the stabilized laser source: (a) plot of voltage difference ΔU; (b) plot of the voltage drop UR at the resistor that is connected in series with the power supply; (c) and (d) plots of UI,1 and UI,2, which differ by a phase shift of 90°.

Fig. 5
Fig. 5

Properties of the unstabilized laser source: (a) Plot of the voltage difference ΔU of the photocells 1 and 2; (b) plot of the output voltages U1,2 of the two photocells caused by the shifting light intensity of the modes; (c) plot of the output voltage UI of the photocell detecting the interference fringes of the interferometer as affected by the frequency shift of one mode.

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