激光诱导热透镜效应——空间自相位调制的实验教学推广EXPERIMENTAL TEACHING PROMOTION OF LASER-INDUCED THERMAL LENSING EFFECT IN TWO-DIMENSIONAL MATERIALS: SPATIAL SELF-PHASE MODULATION
杨博,李洁,李一鸣,乔中华,唐嘉岐,鄢小卿,王槿,刘东奇,刘芳
摘要(Abstract)：
本文将理论与实验结合，设计了一套基于空间自相位调制（Spatial Self-Phase Modulation,SSPM）探究激光诱导热透镜效应的教学装置，观察了SSPM衍射条纹的形成-畸变-稳定的动态过程；利用该装置验证了衍射环数与激光光强的线性依赖关系，并发现入射光强相同时，激光波长越靠近材料吸收峰衍射环环数越多；将实验教学场景从传统的NMP(N-甲基吡咯烷酮)试剂进一步推广到安全性更高的茶多酚-乙醇试剂和固体样品。该装置不仅推广了热透镜效应在实验教学中的应用，还有望为新材料热透镜效应研究提供重要的实验平台和参考。
关键词(KeyWords)： 热透镜效应;热致非线性;二维材料;空间自相位调制
基金项目(Foundation): 南开大学2025年科研仪器实验技术研发项目（项目批准号：25NKSYJS05）;; 国家重点研发计划（项目批准号：2023YFB3307700）;; 航空科学基金（项目批准号：202400540S6002）
作者(Author): 杨博,李洁,李一鸣,乔中华,唐嘉岐,鄢小卿,王槿,刘东奇,刘芳
DOI: 10.27024/j.wlygc.2025.11.07.02
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