Optical surface wave in a crystal with diffusion photorefractive nonlinearity

Chetkin, S A; Akhmedzhanov, I. M.

doi:10.1070/qe2011v041n11abeh014660

Cited by 25 publications

(7 citation statements)

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“…Here we describe the extraordinary polarized (p-polarized) nonlinear surface waves Transverse magnetic (TM waves) with the vector of magnetic field strength H = (0, H y , 0) [26][27][28][29][30]. The light intensity in surface wave I ∝ |H y | 2 does not depend on the coordinate y.…”

Section: Theorymentioning

confidence: 99%

“…We suppose here that photorefractive crystal is characterized by diffusion mechanism of nonlinearity formation, which describes the nonlinear addition to the unperturbed refractive index of a photorefractive crystal [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43]. The propagation of light leads to the appearance of an intracrystalline electric field E sc x , which is directed along the optical axis (which coincides with x axis).…”

Section: Theorymentioning

confidence: 99%

“…The propagation of light leads to the appearance of an intracrystalline electric field E sc x , which is directed along the optical axis (which coincides with x axis). The intracrystalline electric field changes the refractive index in accordance with the Pockels effect in a linear manner, and the nonlinear addition ∆n P can be written as [26][27][28][29][30]:…”

Section: Theorymentioning

confidence: 99%

“…The intracrystalline field E sc x becomes non-linearly dependent on the light intensity in the surface wave because of the action of the diffusion mechanism of the redistribution of photoinduced electric charge carriers in a photorefractive crystal [30]. The authors usually write the intracrystalline field as follows [26][27][28][29][30]:…”

Section: Theorymentioning

confidence: 99%

“…Typically, non-linear contacting media are selected [19,20]. It is also studied the waveguide properties of interfaces in metamaterials (left-handed materials) [21][22][23] and photorefractive crystals [24][25][26][27][28][29]. The field-induced change in the refractive index in photorefractive crystals makes it possible to use them in various optical devices [30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

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The surface waves propagating along the contact between the layer with the constant gradient of refractive index and photorefractive crystal

Савотченко

2022

J. Opt.

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We consider the photorefractive crystal with diffusion nonlinearity mechanism contacting with the linearly graded-index medium. The new types of the surface waves propagating along the contact are found and their properties are described. The transition between two types of the surface waves can be controlled by the waveguide temperature. The light field penetrates into the photorefractive crystal much deeper than into the graded-index medium. The maxima intensity monotonically increase with an increase in the propagation constant, and monotonically decrease with an increase in the temperature. The localization length of the surface waves decreases with an increase in the characteristic distance the graded-index medium and with a decrease in the propagation constant and the temperature. The discrete spectrum of the propagation constant for the special waveguide mode corresponding to the case of exponential damping of intensity maxima of the surface waves with an increasing temperature is obtained. It is shown that the intensity maxima in the photorefractive crystal depend parabolic on the temperature at low temperature waveguide mode.

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