Applied Physics Letters

All optical poling of KTP crystal for phase matched second harmonic generation

Y Yuhao Zhao (Center for Global Change and Ecological Forecasting, Zhejiang Zhoushan Island Ecosystem Observation and Research Station, Institute of Eco-Chongming, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University) T Tianxiang Xu (Laboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Advanced Optical Functional Materials and Devices, and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University 1 , Ningbo 315211,) Y Yunze Wang (Laboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Advanced Optical Functional Materials and Devices, and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University 1 , Ningbo 315211,) H Hui Zhao (Center of Ionic Liquid and Green Energy, Beijing Key Laboratory of Solid State Battery and Energy Storage Process, State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering) X Xiaoying He R Ruwei Zhao (Laboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Advanced Optical Functional Materials and Devices, and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University 1 , Ningbo 315211,) F Feng Chen Y Yan Sheng

Abstract

We demonstrate periodic ferroelectric domain inversion in KTiOPO4 (KTP) crystals using the femtosecond laser poling technique. The effects of laser parameters on the morphological characteristics of these light-induced domains were systematically investigated. A periodically poled KTP crystal was fabricated through this optical approach, achieving quasi-phase matched second harmonic generation. This work provides a convenient method for engineering ferroelectric domains in KTP crystals and expands the applicability of all optical poling to a broader range of ferroelectric materials.

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Article Details

Volume / Issue Vol. 126, Issue 10
Published March 01, 2025
ISSN 0003-6951
Publisher American Institute of Physics

Journal Info

Applied Physics Letters

American Institute of Physics
ISSN: 0003-6951 Physical Sciences

Authors (8)

Y

Yuhao Zhao

Center for Global Change and Ecological Forecasting, Zhejiang Zhoushan Island Ecosystem Observation and Research Station, Institute of Eco-Chongming, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University

T

Tianxiang Xu

Laboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Advanced Optical Functional Materials and Devices, and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University 1 , Ningbo 315211,

Y

Yunze Wang

Laboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Advanced Optical Functional Materials and Devices, and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University 1 , Ningbo 315211,

H

Hui Zhao

Center of Ionic Liquid and Green Energy, Beijing Key Laboratory of Solid State Battery and Energy Storage Process, State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering

X

Xiaoying He

R

Ruwei Zhao

Laboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Advanced Optical Functional Materials and Devices, and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University 1 , Ningbo 315211,

F

Feng Chen

Y

Yan Sheng

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