基于激光自混合干涉效应的悬臂梁振动特性  

Cantilever Vibration Characteristics Based on Laser Self-Mixing Interference Effect

作　　者：吕亮[1] 黄样[1] 俞本立[1] 

机构地区：[1]安徽大学光电信息获取与控制教育部重点实验室,安徽合肥230039

出　　处：《中国激光》2012年第2期178-182,共5页Chinese Journal of Lasers

基　　金：高等学校博士学科点专项科研基金(20103401120001);安徽省教育厅重点科研计划(KJ2010A019)资助课题

摘　　要：针对悬臂梁振动系统特性研究要求,提出了一种基于激光自混合干涉效应的极值点模型测量方法。该测量方法相对传统测量方法具有简单、实效、成本低廉等优点。从Lang和Kobayashi建立的速率方程出发推导了极值点研究模型并利用蒙特-卡罗随机模拟方法对半周期极值点公式进行简化修正,获得了自由振动情况下悬臂梁振动固有频率阶数为第10阶,振幅特征参量为A10=B10=5.4601×10-13。For the requirements of cantilever vibration characteristics,a vibration system extra points measurement method based on self-mixing interference is purposed.This method is relatively simple,effective,and low cost compared to traditional measurement methods.Starting from the Lang-Kobayashi rate equation,vibration system extra points model is deduced and Monte Carlo random simulation method is used to simplify and correct the half-cycle extreme points formulcs.The order of the cantilever vibration natural frequency is 10 and amplitudes of the characteristic parameters are A10=B10=5.4601×10-13 in the case of free vibration.

关 键 词：激光光学 半导体激光器 自混合效应 振动 

分 类 号：O436[机械工程—光学工程]