Photorefractive diffusion-driven self-focusing and self-trapping in near-transition paraelectric crystals

Bruno Crosignani; Eugenio DelRe; Paolo Di Porto; Mario Tamburrini; Antonio Degasperis; Aharon Agranat; Mordechai Segev

Photorefractive diffusion-driven self-focusing and self-trapping in near-transition paraelectric crystals

Bruno Crosignani^*, Eugenio DelRe, Paolo Di Porto, Mario Tamburrini, Antonio Degasperis, Aharon Agranat, Mordechai Segev

^*Corresponding author for this work

Research output: Contribution to conference › Paper › peer-review

Abstract

The observation of self-focusing and self-trapping in potassium lithium tantalate niobate (KLTN) crystals in a very-near-transition paraelectric phase without any external applied field and without any sort of artificial background illumination is reported. This behavior depends only on the temperature T of the sample and is independent on beam intensity and size. Finally, the effect of background illumination in KLTN is studied using a y polarized uniform beam of the same intensity as the focused beam. The presence of a background illumination increases the value of I_b and numerical integration decreases the value of γ at which quasi-soliton like propagation occurs, thus explaining the decreased focusing observed.

Original language	English
Pages	411-413
Number of pages	3
State	Published - 1998
Externally published	Yes
Event	Proceedings of the 1998 IEEE Nonlinear Optics Topical Meeting - Princeville, HI, USA Duration: 10 Aug 1998 → 14 Aug 1998

Conference

Conference	Proceedings of the 1998 IEEE Nonlinear Optics Topical Meeting
City	Princeville, HI, USA
Period	10/08/98 → 14/08/98

Cite this

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title = "Photorefractive diffusion-driven self-focusing and self-trapping in near-transition paraelectric crystals",

abstract = "The observation of self-focusing and self-trapping in potassium lithium tantalate niobate (KLTN) crystals in a very-near-transition paraelectric phase without any external applied field and without any sort of artificial background illumination is reported. This behavior depends only on the temperature T of the sample and is independent on beam intensity and size. Finally, the effect of background illumination in KLTN is studied using a y polarized uniform beam of the same intensity as the focused beam. The presence of a background illumination increases the value of Ib and numerical integration decreases the value of γ at which quasi-soliton like propagation occurs, thus explaining the decreased focusing observed.",

author = "Bruno Crosignani and Eugenio DelRe and {Di Porto}, Paolo and Mario Tamburrini and Antonio Degasperis and Aharon Agranat and Mordechai Segev",

year = "1998",

language = "אנגלית",

pages = "411--413",

note = "Proceedings of the 1998 IEEE Nonlinear Optics Topical Meeting ; Conference date: 10-08-1998 Through 14-08-1998",

}

TY - CONF

T1 - Photorefractive diffusion-driven self-focusing and self-trapping in near-transition paraelectric crystals

AU - Crosignani, Bruno

AU - DelRe, Eugenio

AU - Di Porto, Paolo

AU - Tamburrini, Mario

AU - Degasperis, Antonio

AU - Agranat, Aharon

AU - Segev, Mordechai

PY - 1998

Y1 - 1998

N2 - The observation of self-focusing and self-trapping in potassium lithium tantalate niobate (KLTN) crystals in a very-near-transition paraelectric phase without any external applied field and without any sort of artificial background illumination is reported. This behavior depends only on the temperature T of the sample and is independent on beam intensity and size. Finally, the effect of background illumination in KLTN is studied using a y polarized uniform beam of the same intensity as the focused beam. The presence of a background illumination increases the value of Ib and numerical integration decreases the value of γ at which quasi-soliton like propagation occurs, thus explaining the decreased focusing observed.

AB - The observation of self-focusing and self-trapping in potassium lithium tantalate niobate (KLTN) crystals in a very-near-transition paraelectric phase without any external applied field and without any sort of artificial background illumination is reported. This behavior depends only on the temperature T of the sample and is independent on beam intensity and size. Finally, the effect of background illumination in KLTN is studied using a y polarized uniform beam of the same intensity as the focused beam. The presence of a background illumination increases the value of Ib and numerical integration decreases the value of γ at which quasi-soliton like propagation occurs, thus explaining the decreased focusing observed.

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AN - SCOPUS:0032292436

SP - 411

EP - 413

T2 - Proceedings of the 1998 IEEE Nonlinear Optics Topical Meeting

Y2 - 10 August 1998 through 14 August 1998

ER -

Photorefractive diffusion-driven self-focusing and self-trapping in near-transition paraelectric crystals

Abstract

Conference

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