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Broadband enhancement of Cerenkov second harmonic generation in a sunflower spiral nonlinear photonic crystal

Date

2018-04-02

Authors

Liu, Shan
Switkowski, Krzysztof
Chen, Xin
Xu, Tianxiang
Krolikowski, Wieslaw
Sheng, Yan

Journal Title

Journal ISSN

Volume Title

Publisher

Optical Society of America

Abstract

We present an experimental study on the Cerenkov second harmonic emission in a novel sunflower spiral array of ferroelectric domains in LiNbO3 crystal. The spiral patterns offer a diffusive, circularly symmetric distribution of reciprocal lattice vectors, thereby enabling enhanced emission of the Cerenkov beam in a broad spectral range. Instead of the traditional electric field poling, the sunflower spiral patterns are fabricated here by using our pioneering method of ferroelectric domain engineering with ultrafast light. This all-optical method gives access to high quality domain structures with short periods, which is beneficial for efficient Cerenkov harmonic generation.

Description

Keywords

Harmonic generation and mixing, Nonlinear wave mixing

Citation

Source

Optics Express

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1364/OE.26.008628

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