OSA's Digital Library

Optics Letters

Optics Letters


  • Vol. 6, Iss. 1 — Jan. 1, 1981
  • pp: 45–47

Optical coherent transient measurements of velocity-changing collisions in SF6

B. Comaskey, R. E. Scotti, and R. L. Shoemaker  »View Author Affiliations

Optics Letters, Vol. 6, Issue 1, pp. 45-47 (1981)

View Full Text Article

Enhanced HTML    Acrobat PDF (398 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Elastic velocity-changing collisions have been observed for the first time to our knowledge in a nonpolar molecule by photon-echo studies of SF6 using a frequency-switched CO2 laser that we have developed. The photon-echo decay is nonexponential and reveals the velocity-changing collision cross section to be σvc = 180 Å2, with an average velocity change per collision of Δu = 155 cm/sec. Using delayed optical nutation, we also determine the cross section for the population decay rate (1/T1) to be σpop = 335 Å2. To within experimental accuracy, we find that phase-interrupting collisions are not important (T1T2). A comparison of these cross sections with those for the polar molecule 13CH3F is made.

© 1981 Optical Society of America

Original Manuscript: October 3, 1980
Published: January 1, 1981

B. Comaskey, R. E. Scotti, and R. L. Shoemaker, "Optical coherent transient measurements of velocity-changing collisions in SF6," Opt. Lett. 6, 45-47 (1981)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. C. K. N. Patel, R. E. Slusher, Phys. Rev. Lett. 20, 1087 (1968). [CrossRef]
  2. C. K. N. Patel, R. E. Slusher, Phys. Rev. Lett. 19, 1019 (1967). [CrossRef]
  3. R. L. Shoemaker, Ann. Rev. Phys. Chem. 30, 239 (1979). [CrossRef]
  4. J. P. Gordon et al., Phys. Rev. 179, 294 (1979). [CrossRef]
  5. S. S. Alimpiev, N. V. Karlov, Sov. Phys. JETP 36, 255 (1973).
  6. J. R. Meckley, C. V. Herr, Phys. Lett. 46A, 41 (1973).
  7. C. V. Heer, R. J. Nordstrom, Phys. Rev. A 11, 536 (1975). [CrossRef]
  8. W. M. Gutman, C. V. Heer, Phys. Lett. 51A, 437 (1975).
  9. W. M. Gutman, C. V. Heer, Phys. Rev. A 16, 659 (1977). [CrossRef]
  10. J. Schmidt, P. R. Berman, R. G. Brewer, Phys. Rev. Lett. 31, 1103 (1973). [CrossRef]
  11. P. R. Berman, J. M. Levy, R. G. Brewer, Phys. Rev. A 11, 1668 (1975). [CrossRef]
  12. J. L. Hall, in Atomic Physics 3, S. J. Smith, G. K. Walters, eds. (Plenum, New York, 1973), p. 615. [CrossRef]
  13. R. G. Brewer, A. Z. Genack, Phys. Rev. Lett. 36, 959 (1976). [CrossRef]
  14. R. G. Brewer, R. L. Shoemaker, Phys. Rev. Lett. 27, 631 (1971). [CrossRef]
  15. C. Freed, IEEE J. Quantum Electron. QE-4, 404 (1968); IEEE J. Quantum Electron. QE-3, 203 (1967). [CrossRef]
  16. R. S. McDowell et al., J. Mol. Spectrosc. 68, 288 (1977). [CrossRef]
  17. J. Keilson, J. E. Storer, Q. Appl. Math. 10, 243 (1952).
  18. R. L. Shoemaker, in Laser and Coherence Spectroscopy, J. I. Steinfeld, ed. (Plenum, New York, 1978), p. 197. [CrossRef]
  19. P. R. Berman, Department of Physics, New York University, New York, N.Y. 10003, personal communication. Because of an error in the formula used for the cross-section calculation, the cross sections quoted in Ref. 11 are slightly larger than the corrected values given here.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited