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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 1, Iss. 2 — Apr. 1, 1984
  • pp: 189–194

Angled-beam photon echoes

R. Beach, B. Brody, and S. R. Hartmann  »View Author Affiliations

JOSA B, Vol. 1, Issue 2, pp. 189-194 (1984)

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We have observed the effect of angled excitation beams on the photon echoes from the 22S1/2–22P1/2 transition of atomic lithium. The degradation of the echo from noncollinear excitations is not so great as had been feared. A calculation with the billiard-ball echo model is in good agreement with our experimental results. In a similar experiment in atomic-sodium vapor we have recorded a decay of echo intensity with increasing pulse separation over nearly 12 orders of magnitude, with the weakest signals coming from atoms that had been more than 23 lifetimes in their excited state.

© 1984 Optical Society of America

R. Beach, B. Brody, and S. R. Hartmann, "Angled-beam photon echoes," J. Opt. Soc. Am. B 1, 189-194 (1984)

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  1. M. O. Scully, M. J. Stephen, and D. C. Burnham, "Photon echo in gaseous media," Phys. Rev. 171, 213–214 (1968). [CrossRef]
  2. C. K. N. Patel and R. E. Slusher, "Photon echoes in gases," Phys. Rev. Lett. 20, 1087–1089 (1968). [CrossRef]
  3. R. Beach, S. R. Hartmann, and R. Friedberg, "Billiard-ball echo model," Phys. Rev. A 25, 2658–2666 (1982); "Billiard ball echo model," in Proceedings of the International Conference on Lasers, 1981, Carl B. Collins, ed. (STS, McLean, Va., 1981), pp. 991–996. [CrossRef]
  4. P. Ye and Y. R. Shen, "Transient four-wave mixing and coherent transient optical phenomena," Phys. Rev. A 25, 2183–2199 (1982). [CrossRef]
  5. R. Beach, B. Brody, and S. R. Hartmann, "Elliptical billiard-ball echo model," Phys. Rev. A 27, 2537–2547 (1983). [CrossRef]
  6. R. Beach, B. Brody, and S. R. Hartmann, "Photon echoes in lithium vapor with the use of angled excitation beams," Phys. Rev. A 27, 2925–2929 (1983). [CrossRef]
  7. I. D. Abella, N. A. Kurnit, and S. R. Hartmann, "Photon echoes," Phys. Rev. 141, 391–406 (1966). [CrossRef]
  8. See, for example, Ref. 9, where a calculation of Doppler damping of photon echoes for noncollinear excitations is made in the appendix. Unfortunately, the starting point of this calculation is Eq. (12) of Ref. 1, which appears incorrectly in Ref. 1 as θ = 2τVi • (n − n1/c + … and correctly should be θ = 2τvi • (n − n2/c + …
  9. S. Aoki, "Photon-echo quantum beats on the 7P3/2−6S½ transition in cesium," Phys. Rev. A 20, 2013–2021 (1979). [CrossRef]

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