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Resonant sum-frequency generation

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1 Author(s)
Moore, G.T. ; Air Force Res. Lab., Kirtland AFB, NM, USA

A theoretical and numerical analysis of doubly or singly resonant sum-frequency generation of two laser beams in an external cavity is presented. The plane-wave equations for three-wave mixing-as applied to Gaussian beams using a Boyd-Kleinman overlap integral-are found to give excellent agreement with 3-D numerical simulations. In many regimes of practical interest, the present theory is also in excellent agreement with earlier work of Kaneda and Kubota. In particular, the generation of 589-nm CW sodium-resonance radiation in lithium triborate using two Nd:YAG lasers is considered. Matching the photon flux of the two laser beams is generally optimal. A suitable choice of input-coupler reflectivities (decreasing as the flux level increases) results in high-efficiency conversion with acceptable tolerance to input flux imbalance

Published in:

Quantum Electronics, IEEE Journal of  (Volume:38 ,  Issue: 1 )