Abstract

The number and relative power of simultaneously oscillating modes in 6328-Å He-Ne optical gas masers (lasers) were measured by means of a technique utilizing Fabry-Perot interferometers. In one case 28 dominant modes spanning a frequency range of 1080 Mc/sec out of the 1500 Mc/sec half-width of the 6328-Å Ne line were found. The relative amplitudes of the modes can be fitted generally to a Gaussian-shaped curve. The technique, which utilizes a scanning Fabry-Perot, is described and discussed.

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  1. D. R. Herriott, J. Opt. Soc. Am. 52, 1, 31 (1962).
  2. W. R. Bennett, Jr., Phys. Rev. 126, 580 (1962).
  3. W. W. Rigrod, H. Kogelnik, D. J. Brangaccio, and D. R. Herriott, J. Appl. Phys. 33, 743 (1962).
  4. H. Kogelnik and W. W. Rigrod, Proc. IRE 50, 2, 220 (1962).
  5. W. W. Rigrod, J. Appl. Phys. Letters 2, 3 (1963).
  6. A. G. Fox and T. Li, Bell System Tech. J. 40, 453 (1961).
  7. G. D. Boyd and J. P. Gordon, Bell System Tech. J. 40, 489 (1961).
  8. G. D. Boyd and H. Kogelnik, Bell System Tech. J. 41, 1347 (1962).
  9. A. Javan, E. A. Ballik, and W. L. Bond, J. Opt. Soc. Am. 52, 1, 96 (1962).
  10. A. Javan, T. S. Jaseja, and C. H. Townes, Bull. Am. Phys. Soc. Ser. II, 8, 4, Abstract V9 (1963).
  11. T. G. Polanyi and W. R. Watson, J. Appl. Phys. 34, 3, 553 (1963).
  12. W. R. Watson and T. G. Polanyi, J. Appl. Phys. 34, 3, 708 (1963).
  13. R. L. Fork, E. I. Gordon, D. R. Herriott, H. W. Kogelnik, and J. W. Loofbourrow, Bull. Am. Phys. Soc. Ser. II 8, 4, 380 (1963).
  14. As one increases the spectral range, (Δλ)SR, the resolution λ0/Δλ0 decreases since (Δλ)SR×(λ0/λλ0) = λ0F, where F is the finesse of the Fabry-Perot interferometer.
  15. Bodine Electric Company, NSH-12R.
  16. G. K. Heller Company, Las Vegas. Nevada, 2T60.
  17. Boston Gear Works, Quincy, Massachusetts, LWG.
  18. We have not yet observed the reduction of power of a mode as it traverses the center frequency of the Doppler line; this reduction is expected as a consequence of the "hole burning" phenomenon.19, 20
  19. R. A. McFarlane, W. R. Bennett, Jr., and W. E. Lamb, Jr., J. Appl. Phys. Letters 2, 10, 189 (1963).
  20. A. Szoke and A. Javan, Phys. Rev. Letters 10, 12, 521 (1963).
  21. M. Born and E. Wolfe in Principles of Optics (Pergamon Press, Inc., New York, 1959).
  22. A third plane mirror was added to the maser cavity spaced 30.3 cm from one of the other two plane mirrors.

Ballik, E. A.

A. Javan, E. A. Ballik, and W. L. Bond, J. Opt. Soc. Am. 52, 1, 96 (1962).

Bennett, Jr., W. R.

W. R. Bennett, Jr., Phys. Rev. 126, 580 (1962).

R. A. McFarlane, W. R. Bennett, Jr., and W. E. Lamb, Jr., J. Appl. Phys. Letters 2, 10, 189 (1963).

Bond, W. L.

A. Javan, E. A. Ballik, and W. L. Bond, J. Opt. Soc. Am. 52, 1, 96 (1962).

Born, M.

M. Born and E. Wolfe in Principles of Optics (Pergamon Press, Inc., New York, 1959).

Boyd, G. D.

G. D. Boyd and J. P. Gordon, Bell System Tech. J. 40, 489 (1961).

G. D. Boyd and H. Kogelnik, Bell System Tech. J. 41, 1347 (1962).

Brangaccio, D. J.

W. W. Rigrod, H. Kogelnik, D. J. Brangaccio, and D. R. Herriott, J. Appl. Phys. 33, 743 (1962).

Fork, R. L.

R. L. Fork, E. I. Gordon, D. R. Herriott, H. W. Kogelnik, and J. W. Loofbourrow, Bull. Am. Phys. Soc. Ser. II 8, 4, 380 (1963).

Fox, A. G.

A. G. Fox and T. Li, Bell System Tech. J. 40, 453 (1961).

Gordon, E. I.

R. L. Fork, E. I. Gordon, D. R. Herriott, H. W. Kogelnik, and J. W. Loofbourrow, Bull. Am. Phys. Soc. Ser. II 8, 4, 380 (1963).

Gordon, J. P.

G. D. Boyd and J. P. Gordon, Bell System Tech. J. 40, 489 (1961).

Heller, G. K.

G. K. Heller Company, Las Vegas. Nevada, 2T60.

Herriott, D. R.

D. R. Herriott, J. Opt. Soc. Am. 52, 1, 31 (1962).

R. L. Fork, E. I. Gordon, D. R. Herriott, H. W. Kogelnik, and J. W. Loofbourrow, Bull. Am. Phys. Soc. Ser. II 8, 4, 380 (1963).

W. W. Rigrod, H. Kogelnik, D. J. Brangaccio, and D. R. Herriott, J. Appl. Phys. 33, 743 (1962).

Jaseja, T. S.

A. Javan, T. S. Jaseja, and C. H. Townes, Bull. Am. Phys. Soc. Ser. II, 8, 4, Abstract V9 (1963).

Javan, A.

A. Javan, T. S. Jaseja, and C. H. Townes, Bull. Am. Phys. Soc. Ser. II, 8, 4, Abstract V9 (1963).

A. Javan, E. A. Ballik, and W. L. Bond, J. Opt. Soc. Am. 52, 1, 96 (1962).

A. Szoke and A. Javan, Phys. Rev. Letters 10, 12, 521 (1963).

Kogelnik, H.

G. D. Boyd and H. Kogelnik, Bell System Tech. J. 41, 1347 (1962).

W. W. Rigrod, H. Kogelnik, D. J. Brangaccio, and D. R. Herriott, J. Appl. Phys. 33, 743 (1962).

H. Kogelnik and W. W. Rigrod, Proc. IRE 50, 2, 220 (1962).

Kogelnik, H. W.

R. L. Fork, E. I. Gordon, D. R. Herriott, H. W. Kogelnik, and J. W. Loofbourrow, Bull. Am. Phys. Soc. Ser. II 8, 4, 380 (1963).

Lamb, Jr., W. E.

R. A. McFarlane, W. R. Bennett, Jr., and W. E. Lamb, Jr., J. Appl. Phys. Letters 2, 10, 189 (1963).

Li, T.

A. G. Fox and T. Li, Bell System Tech. J. 40, 453 (1961).

Loofbourrow, J. W.

R. L. Fork, E. I. Gordon, D. R. Herriott, H. W. Kogelnik, and J. W. Loofbourrow, Bull. Am. Phys. Soc. Ser. II 8, 4, 380 (1963).

McFarlane, R. A.

R. A. McFarlane, W. R. Bennett, Jr., and W. E. Lamb, Jr., J. Appl. Phys. Letters 2, 10, 189 (1963).

Polanyi, T. G.

T. G. Polanyi and W. R. Watson, J. Appl. Phys. 34, 3, 553 (1963).

W. R. Watson and T. G. Polanyi, J. Appl. Phys. 34, 3, 708 (1963).

Rigrod, W. W.

H. Kogelnik and W. W. Rigrod, Proc. IRE 50, 2, 220 (1962).

W. W. Rigrod, H. Kogelnik, D. J. Brangaccio, and D. R. Herriott, J. Appl. Phys. 33, 743 (1962).

W. W. Rigrod, J. Appl. Phys. Letters 2, 3 (1963).

Szoke, A.

A. Szoke and A. Javan, Phys. Rev. Letters 10, 12, 521 (1963).

Townes, C. H.

A. Javan, T. S. Jaseja, and C. H. Townes, Bull. Am. Phys. Soc. Ser. II, 8, 4, Abstract V9 (1963).

Watson, W. R.

W. R. Watson and T. G. Polanyi, J. Appl. Phys. 34, 3, 708 (1963).

T. G. Polanyi and W. R. Watson, J. Appl. Phys. 34, 3, 553 (1963).

Wolfe, E.

M. Born and E. Wolfe in Principles of Optics (Pergamon Press, Inc., New York, 1959).

Other (22)

D. R. Herriott, J. Opt. Soc. Am. 52, 1, 31 (1962).

W. R. Bennett, Jr., Phys. Rev. 126, 580 (1962).

W. W. Rigrod, H. Kogelnik, D. J. Brangaccio, and D. R. Herriott, J. Appl. Phys. 33, 743 (1962).

H. Kogelnik and W. W. Rigrod, Proc. IRE 50, 2, 220 (1962).

W. W. Rigrod, J. Appl. Phys. Letters 2, 3 (1963).

A. G. Fox and T. Li, Bell System Tech. J. 40, 453 (1961).

G. D. Boyd and J. P. Gordon, Bell System Tech. J. 40, 489 (1961).

G. D. Boyd and H. Kogelnik, Bell System Tech. J. 41, 1347 (1962).

A. Javan, E. A. Ballik, and W. L. Bond, J. Opt. Soc. Am. 52, 1, 96 (1962).

A. Javan, T. S. Jaseja, and C. H. Townes, Bull. Am. Phys. Soc. Ser. II, 8, 4, Abstract V9 (1963).

T. G. Polanyi and W. R. Watson, J. Appl. Phys. 34, 3, 553 (1963).

W. R. Watson and T. G. Polanyi, J. Appl. Phys. 34, 3, 708 (1963).

R. L. Fork, E. I. Gordon, D. R. Herriott, H. W. Kogelnik, and J. W. Loofbourrow, Bull. Am. Phys. Soc. Ser. II 8, 4, 380 (1963).

As one increases the spectral range, (Δλ)SR, the resolution λ0/Δλ0 decreases since (Δλ)SR×(λ0/λλ0) = λ0F, where F is the finesse of the Fabry-Perot interferometer.

Bodine Electric Company, NSH-12R.

G. K. Heller Company, Las Vegas. Nevada, 2T60.

Boston Gear Works, Quincy, Massachusetts, LWG.

We have not yet observed the reduction of power of a mode as it traverses the center frequency of the Doppler line; this reduction is expected as a consequence of the "hole burning" phenomenon.19, 20

R. A. McFarlane, W. R. Bennett, Jr., and W. E. Lamb, Jr., J. Appl. Phys. Letters 2, 10, 189 (1963).

A. Szoke and A. Javan, Phys. Rev. Letters 10, 12, 521 (1963).

M. Born and E. Wolfe in Principles of Optics (Pergamon Press, Inc., New York, 1959).

A third plane mirror was added to the maser cavity spaced 30.3 cm from one of the other two plane mirrors.

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