Parametric interaction of optical waves in metamaterials under low-frequency pumping

Kasumova, Rena J.; Amirov, Sh. Sh.; Shamilova, Sh. A.

doi:10.1070/qel16395

Cited by 8 publications

(2 citation statements)

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“…In the work of Chirkin and Shutov, authors experimentally showed the possibility of implementation of nondegenerate parametric amplification under low‐frequency pump in ANPC, that is, the possibility of amplification of two waves with frequencies being higher than pump frequency. Recently, PALFP was realized both in a crystal composed of three sections (two sections being with QPM gratings and one section without ones) and in metamaterials . It should be noted that parametric amplification under low‐frequency pump in a homogeneous medium for the first time had been theoretically studied in Ahkmanov and Dmitriev, and however, it was not been realized experimentally yet.…”

Section: Introductionmentioning

confidence: 99%

Broadband noncollinear optical parametric amplification under low‐frequency picosecond pump in homogeneous KTP crystal

Vereshchagin

Morozov

Tunkin

2018

J Raman Spectroscopy

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The nature of cubic and cascaded quadratic nonlinear responses in the KTiOPO4 crystal under picosecond pump is studied. The main attention is paid to determination of the origin and properties of the blue radiation accompanying the red light amplification process (the central wavelength ~685 nm, bandwidth ~20 nm) in a noncollinear optical parametric amplifier (NOPA) pumped by the second‐harmonic radiation of the picosecond Nd:YAG laser (532 nm). In NOPA, the amplified seed radiation (ωs) becomes so intense that it can participate in any nonlinear three‐wave interaction and also can play the role of the Stokes wave in the in the coherent anti‐Stokes Raman scattering‐process in which powerful pump radiation (ωp) of the main parametric process serves both as the pump wave and the probe wave. Possible causes of the blue light emanating from the KTP crystal and the mechanisms for their realization are analyzed. We interpret the ring of blue light around the axis located between the directions of propagation of the green pump beam and the red beam of the amplified seed radiation, as the emission of amplified parametric fluorescence (signal wave) under low‐frequency pump. This phenomenon can be used for effective amplification in picosecond NOPA of weak anti‐Stokes radiation in the experiments with time‐resolved broadband picosecond coherent Anti‐Stokes Raman Scattering.

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Section: Introductionmentioning

confidence: 99%

Broadband noncollinear optical parametric amplification under low‐frequency picosecond pump in homogeneous KTP crystal

Vereshchagin

Morozov

Tunkin

2018

J Raman Spectroscopy

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show abstract

“…The essence of the method lies in the possibility of using the theory of electrical circuits methods, where the task is partly solved at the stage of its formulation. In works [11,12] electrical properties were modeled using quantum mechanical methods of calculation (for example, Agranovich -Ginsburg, Kudo -Greenwood methods), which provide the most accurate results, but also require more computational power compared to other methods of modeling.…”

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confidence: 99%