Cascaded fifth-harmonic generation in single cubic nonlinear medium by focused laser beam

Rosen K. Ivanov; Solomon M. Saltiel

doi:10.1117/12.519087

4 November 2003 Cascaded fifth-harmonic generation in single cubic nonlinear medium by focused laser beam

Rosen K. Ivanov, Solomon M. Saltiel

Proceedings Volume 5226, 12th International School on Quantum Electronics: Laser Physics and Applications; (2003) https://doi.org/10.1117/12.519087
Event: 12th International School on Quantum Electronics Laser Physics and Applications, 2002, Varna, Bulgaria

Abstract

Generation of fifth harmonic by cascading of two phase-matched or two near phase-matched third order processes in single cubic nonlinear medium with focused fundamental beam is investigated theoretically. With the help of analytical and numerical investigations the optimized conditions for maximum conversion into fifth harmonic are found. In general the optimal position of focusing depends on the values of the mismatches Δk₁ and Δk₂ for both "steps" of the third order cascading (ω+ω+ω=3ω; 3ω+ω+ω=5ω). It is shown that for best efficiency this method of fifth harmonic generation requires specially chosen Δk_1,opt and Δk_2,opt and focusing in the center of the nonlinear media. If the phase matching parameters are fixed and they deviate from the optimal values, then the optimal strength of focusing and position of the focus spot should be calculated according the analysis presented here.

Citation Download Citation

Rosen K. Ivanov and Solomon M. Saltiel "Cascaded fifth-harmonic generation in single cubic nonlinear medium by focused laser beam", Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); https://doi.org/10.1117/12.519087

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