RADIATION INTERFERENCE ON TRIPLE AND COMBINATION FREQUENCIES AT THE SIMULTANEOUS NONLINEAR REFLECTION OF TWO FEMTOSECOND PULSES AT THE FUNDAMENTAL AND DOUBLED FREQUENCIES FROM A DIELECTRIC MEDIUM

Olga Stolpovskaya, Putilin Sergey E, Bespalov Viktor G, Kozlov Sergei A

2012 , VOLUME 12, NUMBER 3 ( MAY-JUNE )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

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Nikiforov
Vladimir O.
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RADIATION INTERFERENCE ON TRIPLE AND COMBINATION FREQUENCIES AT THE SIMULTANEOUS NONLINEAR REFLECTION OF TWO FEMTOSECOND PULSES AT THE FUNDAMENTAL AND DOUBLED FREQUENCIES FROM A DIELECTRIC MEDIUM

O. Stolpovskaya, S. E. Putilin, V. G. Bespalov, S. A. Kozlov

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Abstract

The paper presents theoretical and experimental results of simultaneous nonlinear reflection of two femtosecond pulses at the fundamental ω₁and doubled ω₂= 2ω₁frequencies from a dielectric medium. It is shown that the reflection of the two-component radiation leads to light pulses generating at the triple and combination frequencies. Moreover, the reflected triple frequency radiation spectrum represents a superposition of two components: the triple 3ω₁and combination 2ω₂- ω₁. Interference between these two components leads to spectrum modulation at 3ω₁frequency while the time delay changing between the incident pulses.

Keywords: nonlinear reflection, triple and combination frequencies, femtosecond pulse.

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