Optics Communications

Photon statistics in a single-mode two-photon laser: Exact versus effective interaction hamiltonian

Ning Lu

Published Jun 1, 1990• 4 citations

Abstract

We study the operation and the photon statistics of a single-mode two-photon laser, using both the exact and the effective interaction hamiltonians. We obtain simple analytical expressions of the mean photon number and of the photon-number variance from both hamiltonians. The exact (effective) hamiltonian predicts that the two-photon laser can (cannot) build up from a vacuum without triggering, and the normalized photon-number variance is 118 (32) far above “threshold”. The domain of validity of the effective hamiltonian for the photon-number variance is found to be much smaller than that for the mean photon number.

DOI: 10.1016/0030-4018(90)90435-v

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