Biphoton focusing for two-photon excitation
Files
Accepted manuscript
Date
2002-02-01
Authors
Nasr, M.B.
Abouraddy, A.F.
Booth, M.C.
Saleh, B.E.A.
Sergienko, A.V.
Teich, M.C.
Kempe, M.
Wolleschensky, R.
Version
OA Version
Citation
M. B. Nasr, A. F. Abouraddy, M. C. Booth, B. E. A. Saleh, A. V. Sergienko, M. C. Teich, M. Kempe, R. Wolleschensky. 2002. "Biphoton focusing for two-photon excitation." PHYSICAL REVIEW A, Volume 65, Issue 2, pp. ? - ? (6).
Abstract
We study two-photon excitation using biphotons generated via the process of spontaneous parametric down conversion in a nonlinear crystal. We show that the focusing of these biphotons yields an excitation distribution that is the same as the distribution of one-photon excitation at the pump wavelength. We also demonstrate that biphoton excitation in the image region yields a distribution whose axial width is approximately that of the crystal thickness and whose transverse width is that of the pump at the input to the crystal.