【光学】用于声光任意飞秒激光脉冲整形（Matlab实现）

原创已于 2024-11-07 10:54:33 修改 · 419 阅读

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#matlab #开发语言

于 2024-11-04 14:44:40 首次发布

💥💥💞💞欢迎来到本博客❤️❤️💥💥

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📋📋📋本文目录如下：🎁🎁🎁

💥1 概述

声光可编程色散滤波器（AOPDF）可用于实现任意飞秒激光脉冲整形。通过特定的 MATLAB 脚本，可以为 AOPDF 创建控制波形。菲涅耳变换被用于射频波形的色散合成，生成的波形可上传至任意波形发生器并应用于 AOPDF。该方法的任意传输函数机制包括多项式频谱相位调制以及来自外部数据文件的幅度和相位调制。为校准 AOPDF，脚本中还嵌入了窄通带和陷波滤波模式。此技术在相关出版物中已得到实验验证，为精确控制飞秒激光脉冲提供了一种有效的手段。

📚2 运行结果

主函数部分代码：

clear all;
close all;

PhaseLoad = [];


%% Input data

% First-order dispersion [fs]
b1 = 0;
% Second-order dispersion [fs^2]
b2 = 0;
% Third-order dispersion [fs^3]
b3 = 0;

% More polynomial coefficients can be added here
ODisp = [b1 b2 b3];

% File names for amplitude and phase upload
% Two-column file format is required:
% Column 1 - wavelength [nm]
% Column 2 - transmission coefficient or phase
% If the file name is blank, upload is skipped
% Transmission coefficient 
AmpFileName = [];
% Spectral Phase [rad]
DispFileName = [];

% Uncomment any or both of two strings for test file upload
% AmpFileName = '../data/Sine.dat';
DispFileName = '../data/Sine.dat';


% Parameters of transmission window in narrow passband and notch modes
% Window width [nm]
BandWidth = 10;
% Window shift [nm]
BandShift = 0;


%% Selection of the AODDL operation mode

% Select one of the regimes:
% 0 - single frequency
% 1 - flat transmission window 
% 2 - rectangular bandpass filter (for amplitude calibration)
% 3 - rectangular notch filter (for frequency calibration)
% 8 - phase and amplitude upload from files 
% 20 - rectangular bandpass filter with phase upload from file
% 30 - rectangular notch filter with phase upload from file
SignalMode = 8;


% Linear frequency modulation mode
% +1 - positive chirp
% -1 - negative chirp
% 0 - disable chirp
ChirpSign = 1;


%% Loading configuration and calibration parameters

% System configuration parameters
run('../data/Initials.m')