Green light direct writing of ferroelectric domains in Mg-doped LiNbO3

Autor(en)

Shoujun Zheng, Yongfa Kong, Rong Zhang, Hongde Liu, Shaolin Chen, Ling Zhang, Shiguo Liu, Romano Rupp, Jingjun Xu

Abstrakt

So far, visible light-induced domain reversal (LIDOR) in LiNbO3 has only been observed to occur under assistance of an external electric field. Here, we develop a two-step technique to directly achieve green-LIDOR for the first time. In the first step, an external electric field as well as the green laser of 532 nm wavelength is applied on the LiNbO3 crystal. In the second step, direct writing of domain structures in LiNbO3 is realized by another 532 nm laser without assistance of external electric field. Green-LIDOR results from a light-induced space-charge field generated by the prior application on an external electric field in the first step. Due to the unique two-step method, our further experiments show that light-induced space-charge field in LIDOR enhances with increasing the applied external electric field. Therefore, we propose a carrier-drift model to this phenomenon.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Nankai University

Journal

Optical Materials Express

Band

4

Seiten

272-279

Anzahl der Seiten

8

ISSN

2159-3930

DOI

https://doi.org/10.1364/OME.4.000272

Publikationsdatum

02-2014

Peer-reviewed

Ja

ÖFOS 2012

103021 Optik, 103018 Materialphysik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/7affd54e-3c1e-40de-967e-2520b81242d0