We present experimental results of enhanced second- and third-harmonic generation efficiency from Fresnel-lensing effects. We obtained enhancement by a factor of 6 in the third-harmonic yield by simply limiting the laser beam with an iris. Higher enhancement factors (up to 16) were obtained with a Fresnel zone plate. The experimental findings are in good agreement with the results of a simple theoretical analysis.
Enhancement of harmonic generation using Fresnel-lensing effects / S. CAVALIERI; LORENZO FINI; EMILIANO SALI; ROBERTO BUFFA. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 31:(2006), pp. 1298-1302. [10.1364/OL.31.001298]
Enhancement of harmonic generation using Fresnel-lensing effects
CAVALIERI, STEFANO;FINI, LORENZO;
2006
Abstract
We present experimental results of enhanced second- and third-harmonic generation efficiency from Fresnel-lensing effects. We obtained enhancement by a factor of 6 in the third-harmonic yield by simply limiting the laser beam with an iris. Higher enhancement factors (up to 16) were obtained with a Fresnel zone plate. The experimental findings are in good agreement with the results of a simple theoretical analysis.
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