Spatial solitons have shown great promise for various applications, but their limited stability in terms of beam movement has been a significant hindrance. This limitation is especially prominent in the conventional configuration where the bias electric field is oriented perpendicular to the soliton propagation direction, leading to instability caused by the driftdiffusion processes. To address this issue, we explore a novel approach where solitons are propagated from one bias plate to the other, with a tilted angle with respect to the field and to the optical axis of the photorefractive crystal. By directing the solitons towards the bias electrodes, we observe an intriguing anchoring effect that immobilizes the soliton beam, resulting in reduced self-bending. The charge distribution on the conductive walls is numerically investigated as a function of the crystallographic orientation of the c-axis. The immobilization of the soliton beams is a fundamental issue for their technological applications as waveguides in integrated photonic circuits, which would result in an addressable but perfectly stable waveguide over time.
Immobilization of photorefractive solitons by charge anchoring on conductive walls / Tari, Hamed; Bile, Alessandro; Nabizada, Arif; Fazio, Eugenio. - In: OPTICS LETTERS. - ISSN 1539-4794. - (2023).
Immobilization of photorefractive solitons by charge anchoring on conductive walls
Hamed TariPrimo
Investigation
;Alessandro BileSecondo
Conceptualization
;Arif NabizadaPenultimo
Software
;Eugenio Fazio
Ultimo
Supervision
2023
Abstract
Spatial solitons have shown great promise for various applications, but their limited stability in terms of beam movement has been a significant hindrance. This limitation is especially prominent in the conventional configuration where the bias electric field is oriented perpendicular to the soliton propagation direction, leading to instability caused by the driftdiffusion processes. To address this issue, we explore a novel approach where solitons are propagated from one bias plate to the other, with a tilted angle with respect to the field and to the optical axis of the photorefractive crystal. By directing the solitons towards the bias electrodes, we observe an intriguing anchoring effect that immobilizes the soliton beam, resulting in reduced self-bending. The charge distribution on the conductive walls is numerically investigated as a function of the crystallographic orientation of the c-axis. The immobilization of the soliton beams is a fundamental issue for their technological applications as waveguides in integrated photonic circuits, which would result in an addressable but perfectly stable waveguide over time.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.