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硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (11): 4131-4135.

所属专题: 玻璃

• 玻璃 • 上一篇    下一篇

红外梯度折射率GeS2-In2S3-CsCl硫系微晶玻璃制备与性能研究

刘虹君1,2, 李成康1,2, 周港杰1,2, 陈津津1,2, 林常规1,2   

  1. 1.宁波大学高等技术研究院,宁波 315211;
    2.浙江省光电探测材料及器件重点实验室,宁波 315211
  • 收稿日期:2023-07-24 修订日期:2023-08-22 出版日期:2023-11-15 发布日期:2023-11-22
  • 通信作者: 林常规,博士,研究员。E-mail:linchanggui@nbu.edu.cn
  • 作者简介:刘虹君(1998—),女,硕士研究生。主要从事光电功能玻璃材料方面的研究。E-mail:kqwdzr@qq.com
  • 基金资助:
    国家自然科学基金(62122039);浙江省自然科学基金(LR21E020001)

Fabrication and Properties of Infrared Gradient Refractive Index GeS2-In2S3-CsCl Chalcogenide Glass-Ceramics

LIU Hongjun1,2, LI Chengkang1,2, ZHOU Gangjie1,2, CHEN Jinjin1,2, LIN Changgui1,2   

  1. 1. The Research Institute of Advanced Technologies, Ningbo University, Ningbo 315211, China;
    2. Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo 315211, China
  • Received:2023-07-24 Revised:2023-08-22 Online:2023-11-15 Published:2023-11-22

摘要: 梯度折射率红外成像系统可在保持成像性能的基础上,极大降低系统的尺寸、质量和成本,有望推进红外成像系统向轻小型发展。然而,目前没有可用的红外梯度折射率光学材料。本文基于65GeS2-25In2S3-10CsCl硫系玻璃,利用梯度温度场热诱导析出轴向梯度分布的β-In2S3纳米晶体,制得梯度折射率透明硫系微晶玻璃。结果表明:析出的β-In2S3晶体为不同晶面取向纳米晶组成的多晶结构,尺寸约为25 nm,且晶体尺寸、数量与梯度温度场密切相关;制得的梯度折射率硫系微晶玻璃仍保持良好的长波红外透过率,且其10 μm处最大折射率差Δn达0.047。

关键词: 硫系玻璃, 热诱导析晶, 梯度折射率, 微晶玻璃, 红外透过率, 光学材料

Abstract: Gradient refractive index infrared imaging system can greatly reduce the size, weight and cost of system while maintaining imaging performance, which is expected to advance the development of infrared imaging system towards lightweight and compactness. However, currently available infrared gradient refractive index optical materials are not accessible. Based on 65GeS2-25In2S3-10CsCl chalcogenide glass, a gradient temperature field was used to thermally induce the precipitation of axially gradient-distributed β-In2S3 nanocrystals to produce a gradient refractive index transparent chalcogenide glass-ceramics. The results show that the precipitated β-In2S3 crystals are polycrystalline structures composed of nanocrystals with different crystallographic orientations, with a size of about 25 nm, and the size and number of crystals are closely related to gradient temperature field. The gradient refractive index chalcogenide glass-ceramics still maintain good transmission in long-wave infrared, and their maximum refractive index difference Δn reaches 0.047 at 10 μm.

Key words: chalcogenide glass, thermally induced crystallization, gradient refractive index, glass-ceramics, infrared transmission, optical material

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