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Fig. 8. Induced Raman scattering spectra of light by totally symmetrical modes
in a calcite monocrystal (
a
), in organic compound POPOP powder (
b
), and liquid
nitrogen (
c
)
direction of the laser impulse propagation (Fig. 10,
b
). According to the
figure, the intensity of the Raman scattering is comparable to the pumping
intensity. In the case of the “longitudinal” Raman scattering, the frequency
shift corresponds to the longitudinal 4А
1
LO-phonon event, and in the case
of the “transverse” Raman scattering, two satellites are present, one of
which corresponds to a 4А
1
TO-phonon (backward scattering), and another
one — to a transverse polariton (p) (forward scattering).
Fig. 11 shows a diagram of the photon-axion conversion in a magnetic
field from area
a
to area
b
. Dashed line corresponds to the axions, wavy
Fig. 9. Interferograms of the generation spectra of the ruby laser (
a
) and induced
globular scattering of light in an artificial opal with the globule diameter of 250 nm (
b
)
46
ISSN 1812-3368. Herald of the BMSTU. Series “Natural Sciences”. 2015. No. 1