Hydrothermal growth of KTiOPO<sub>4</sub> crystal for electro-optical application

Haitao Zhou; Xiaoling He; Wenyuan Wu; Jingfang Tong; Jinliang Wang; Yanbin Zuo; Yicheng Wu; Changlong Zhang; Zhanggui Hu

doi:10.1038/s41377-022-01022-0

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Hydrothermal growth of KTiOPO₄ crystal for electro-optical application

Review

- Hydrothermal growth of KTiOPO₄ crystal for electro-optical application
- Hydrothermal growth of KTiOPO₄ crystal for electro-optical application
- 光：科学与应用 2023年12卷第1期页码：40-59
- Affiliations：
  
  1.Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystals, School of Materials Science and Engineering, Tianjin University of Technology, 300384, Tianjin, China
  2.Guangxi Key Laboratory of Superhard Materials, China Nonferrous Metals (Guilin) Geology and Mining Co., Ltd, 541004, Guilin, China
- Author bio：
  
  Changlong Zhang (glzhchl@sina.com)
  Zhanggui Hu (hu@mail.ipc.ac.cn)
- Funds：
- DOI：10.1038/s41377-022-01022-0
  中图分类号：
- 纸质出版日期：2023-1-31，
  
  网络出版日期：2023-1-12，
  
  收稿日期：2022-2-28，
  
  修回日期：2022-9-19，
  
  录用日期：2022-10-24
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Hydrothermal growth of KTiOPO₄ crystal for electro-optical application[J]. 光：科学与应用, 2023,12(1):40-59.

Zhou H. T. et al. Hydrothermal growth of KTiOPO₄ crystal for electro-optical application. Light: Science & Applications, 12, 41-59 (2023).
Hydrothermal growth of KTiOPO₄ crystal for electro-optical application[J]. 光：科学与应用, 2023,12(1):40-59. DOI： 10.1038/s41377-022-01022-0.

Zhou H. T. et al. Hydrothermal growth of KTiOPO₄ crystal for electro-optical application. Light: Science & Applications, 12, 41-59 (2023). DOI： 10.1038/s41377-022-01022-0.

摘要

Abstract

"New" electro-optical (EO) crystals are hard to find

"old" EO crystals are scarce and each has its own problems

and the demand for high-performance EO crystals by higher power

higher repetition rate

and narrower pulse width laser is realistic and urgent. The EO performance of KTP was recognized as soon as it was discovered

but after more than 40 years of development

the reports

and products of EO devices based on KTP are less than those of other EO crystals

even though KTP is now almost the cheapest nonlinear optical crystal material. In this paper

based on our understanding of the crystal structure of predecessors and ourselves

especially the understanding and practice of quasi-one-dimensional ionic conduction mechanism

we think that crystal growth is the most important reason that affects the controllability of crystal performance. Through a series of science and technology

we realize the growth of large-size crystals with high-optical uniformity

then reduce the absorption of KTP to a very low level

and grow crystals with resistance to electric damage and laser damage. On this basis

reducing the conductivity and improving the uniformity of optical

electrical

piezoelectric

and ferroelectric properties are emphasized. The extinction ratio

piezoelectric ringing effect

and thermal influence of the EO switch based on KTP crystal are tested

and some publicly available progress of using KTP EO devices in high-repetition rate laser is listed. Finally

we are looking forward to the development of KTP EO crystal for the laser system to EO generator for integrated optics.

关键词

Keywords

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Hydrothermal growth of KTiOPO4 crystal for electro-optical application

Hydrothermal growth of KTiOPO4 crystal for electro-optical application

DOI：10.1038/s41377-022-01022-0

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Hydrothermal growth of KTiOPO₄ crystal for electro-optical application

Hydrothermal growth of KTiOPO₄ crystal for electro-optical application