Biphoton focusing for two-photon excitation

Details Biphoton focusing for two-photon excitation Biphoton focusing for two-photon excitation

2001-10-09

arxiv.org/abs/quant-ph/0110058v1

Phys. Rev. A 65, 023816 (2002)

Physics

Quantum Physics

Accepted for publication in Physical Review A

Scientific paper

10.1103/PhysRevA.65.023816

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 essentially 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.

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