高压物理学报2025，Vol.39Issue(4)：1-8,8.DOI:10.11858/gywlxb.20240967
基于频域干涉法测量激光加载亚微米铝膜的冲击参数
Shock Parameter Measurement of Sub-Micrometer Aluminum Driven by Laser Using Frequency Domain Interferometer
摘要
Abstract
For aluminum films with submicron thickness deposited on quartz substrates,femtosecond laser pulses(35 fs pulse width,0.5 mJ energy,and a central wavelength of 800 nm)were focused on the surface to induce rapid thermal expansion through laser ablation.This process generated shock wave propagation and achieved high-pressure loading on the aluminum samples.Through the quartz window on the backside of the aluminum sample,frequency-domain interferometry was employed to simultaneously measure shock-induced radial displacement profiles,particle velocities,and shock wave propagation velocities.Experimental repeatability for multiple shots was enhanced through pulse energy and shock position monitoring.A phase comparison algorithm was applied for data analysis,achieving sub-nanometer displacement resolution and sub-picosecond temporal resolution.This methodology successfully captured the interfacial shock profile evolution history in the aluminum film under approximately 130 GPa of pressure.关键词
冲击波/飞秒激光/频域干涉/物态方程Key words
shock wave/femtosecond laser/frequency domain interfering/equation of state引用本文复制引用
陶天炯,唐隆煌,陈永超,翁继东,王翔,刘盛刚,马鹤立,李成军,贾兴,陈龙,吴建..基于频域干涉法测量激光加载亚微米铝膜的冲击参数[J].高压物理学报,2025,39(4):1-8,8.基金项目
国家自然科学基金(U2241276) （U2241276）
