Applied Physics B

, Volume 63, Issue 5, pp 473–480 | Cite as

Frequency locking and unlocking in a femtosecond ring laser with application to intracavity phase measurements

  • S. Diddams
  • B. Atherton
  • J. -C. Diels
Regular Papers

Abstract

Frequency coupling between the counter-propagating pulses inside a femtosecond ring laser gyroscope is studied. It is shown that frequency lock-in results from the counter-propagating pulses overlapping at or near a scattering surface. Nonetheless, the absence of lock-in with a scatterer at the pulse crossing point is demonstrated for the special case of symmetric scattering. The decoupling of the counter-propagating pulses makes possible the measurement of non-reciprocal phase differences of 10−5 and index differences of 10−10 over 1 cm. Besides measuring rotations, applications are found in the measurement of small changes in the index of refraction, and electrical transients on the 100 fs time scale.

PACS

42.80 42.55 M 

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References

  1. 1.
    N. Buholz, M. Chodorow: IEEE J. Quant. Electr.QE-3, 454 (1967)Google Scholar
  2. 2.
    S.I. Wax: IEEE J. Quant. Electr.QE-8, 343 (1972)Google Scholar
  3. 3.
    S.I. Wax, M. Chodorow: IEEE J. Quant. Electr.QE-8, 352 (1972)Google Scholar
  4. 4.
    V.Y. Petrun'kin, V.M. Nikolaev, S.L. Galkin: Sov. Phys. Tech. Phys.20, 770 (1976)Google Scholar
  5. 5.
    W.R. Christian, M.J. Rosker: Opt. Lett.16, 1587 (1991)Google Scholar
  6. 6.
    M.L. Dennis, J.-C.M. Diels, M. Lai: Opt. Lett.16, 529 (1991)Google Scholar
  7. 7.
    D. Gnass, N.P. Ernsting, F.P. Schäfer: Appl. Phys. B53, 119 (1991)Google Scholar
  8. 8.
    M. Lai, J.-C. Diels, M.L. Dennis: Opt. Lett.17, 1535 (1992)Google Scholar
  9. 9.
    F. Salin et al.: Opt. Lett.15, 906 (1990)Google Scholar
  10. 10.
    F.P. Schäfer: (personal communication to Jean-Claude Diels). In this letter Professor Schäfer discusses the fact that the Sagnac effect could potentially limit the generation of the shortest femtosecond pulses because in a rotating cavity the crossing point of the counter-propagating pulses moves away from the saturable absorber. Fortunately, the envelope shaping mechanisms in the laser correct this walk-off for each round trip. (unpublished)Google Scholar
  11. 11.
    F. Zarinetchi, S.P. Smith, S. Ezekiel: Opt. Lett.16, 229 (1991)Google Scholar
  12. 12.
    J.-C. Diels, I.C. McMichael: Opt. Lett.6, 219 (1981)Google Scholar
  13. 13.
    J.-C. Diels, I.C. McMichael: J. Opt. Soc. Am. B3, 535 (1986)Google Scholar
  14. 14.
    M.L. Dennis, J.-C. Diels: Appl. Opt.33, 1659 (1994)Google Scholar
  15. 15.
    S.I. Wax, M. Chodorow, H.E. Puthoff: Appl. Phys. Lett.16, 157 (1970)Google Scholar
  16. 16.
    F. Aronowitz, R.J. Collins: J. Appl. Phys.41, 130 (1970)Google Scholar
  17. 17.
    J. Chesnoy: Opt. Lett.14, 990 (1989)Google Scholar
  18. 18.
    I. Kataoka, Y. Kawahara: Jpn. J. Appl. Phys.25, 1365 (1986)Google Scholar
  19. 19.
    J.R. Wilkinson: Prog. Quant. Electr.11, 1 (1987)Google Scholar
  20. 20.
    R.W. Boyd:Nonlinear Optics (Academic Press, San Diego, 1992)Google Scholar
  21. 21.
    L. Hollberg: InDye Laser Principles, ed. by F. J. Duarte, L.W. Hillman (Academic Press, Boston, 1990), pp. 185–238Google Scholar
  22. 22.
    A. Siegman:Lasers (University Science Books, Mill Valley, CA, (1986)Google Scholar
  23. 23.
    J.A. Valdmanis, G. Mourou: IEEE J. Quant. Electr.QE-22, 69 (1986)Google Scholar
  24. 24.
    A. Yariv, P. Yeh:Optical Waves in Crystals (Wiley, New York, 1984)Google Scholar
  25. 25.
    D.H. Auston: Appl. Phys. Lett.26, 101 (1975)Google Scholar
  26. 26.
    B. Atherton, S. Diddams, J.-C. Diels:Quantum Electronics Conference, Vol. 16, OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1995), pp. 8–9Google Scholar

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • S. Diddams
    • 1
  • B. Atherton
    • 1
  • J. -C. Diels
    • 1
  1. 1.Department of Physics and AstronomyUniversity of New MexicoAlbuquerqueUSA

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