Multifunctional spectroscopic technique for probing surfaces and interfaces based on a femtosecond laser

WANG Ningfang; XU Jinsheng; ZHU Hao; LI Bolin; SHENG Zhigao

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Multifunctional spectroscopic technique for probing surfaces and interfaces based on a femtosecond laser

Optical Sensing and Measurement | 更新时间：2026-01-22

- Multifunctional spectroscopic technique for probing surfaces and interfaces based on a femtosecond laser
- OPTICAL TECHNIQUE Vol. 52, Issue 1, Pages: 94-100(2026)
- 作者机构：
  
  1.安徽大学物质科学与信息技术研究院，安徽合肥 230601
  2.中国科学院合肥物质科学研究院强磁场科学中心，安徽合肥 230031
- 作者简介：
- 基金信息：
- DOI：
  CLC： O437.1;O433.1;TH744
- Received：03 August 2025，
  
  Revised：2025-10-16，
  
  Published：20 January 2026
- 稿件说明：
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王宁芳,徐金生,朱昊等.基于飞秒激光的多功能材料表界面光谱探测技术[J].光学技术,2026,52(01):94-100.

WANG Ningfang,XU Jinsheng,ZHU Hao,et al.Multifunctional spectroscopic technique for probing surfaces and interfaces based on a femtosecond laser[J].OPTICAL TECHNIQUE,2026,52(01):94-100.
王宁芳,徐金生,朱昊等.基于飞秒激光的多功能材料表界面光谱探测技术[J].光学技术,2026,52(01):94-100. DOI：

WANG Ningfang,XU Jinsheng,ZHU Hao,et al.Multifunctional spectroscopic technique for probing surfaces and interfaces based on a femtosecond laser[J].OPTICAL TECHNIQUE,2026,52(01):94-100. DOI：

摘要

材料表界面分子结构与表界面诸多性能息息相关，因此开发超灵敏的多功能材料表界面探测技术具有重要意义。文章基于飞秒激光器，开发了一体化的多功能飞秒非线性光谱系统（和频振动光谱和二次谐波），各功能间可方便地切换，并将其应用于自组装十八烷基三氯硅烷单分子层、磷脂单层膜、高分子超薄膜和二维薄层材料的表界面结构与性能探测。结果表明该系统具有超高的单分子层灵敏性、相位敏感性和高时间分辨率，可探测表面分子结构、绝对取向、对称性以及超快动力学过程。该系统的一体化设计极大地提高了飞秒激光器的利用效率，为复杂材料表界面的多维度探测提供了强有力的手段。

Abstract

The molecular structures at surfaces and interfaces of materials are fundamentally correlated with numerous surface/interfacial properties. Therefore

developing ultrasensitive

multi-functional probing techniques is of great importance. In this work

an integrated multi-functional femtosecond nonlinear spectroscopic system （sum frequency generation vibrational spectroscopy and second harmonic generation） was developed based on a femtosecond laser. The system allows convenient switching between functions and has been applied to probe the surface/interfacial structures and properties of self-assembled octadecyltrichlorosilane monolayer

phospholipid monolayer

polymer ultrathin film

and two-dimensional layered material. The Results demonstrate that the system is of ultrahigh monolayer sensitivity

phase sensitivity

and high temporal resolution

enabling the detection of surface molecular structures

absolute orientations

symmetries

and ultrafast dynamic processes. The integrated design significantly enhances the utilization efficiency of the femtosecond laser

providing a powerful tool for multifunctional investigations of complex surfaces and interfaces of materials.

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Keywords

references

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