[1]郭冬梅.半导体激光自混合干涉测量技术中正弦相位调制参数的优化分析[J].南京师大学报(自然科学版),2010,33(04):53-57.
　Guo Dongmei.Optimization Analysis of Modulation Parameters in Laser Diode Self-mixing Interferometry Based on Sinusoidal Phase Modulation[J].Journal of Nanjing Normal University(Natural Science Edition),2010,33(04):53-57.
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半导体激光自混合干涉测量技术中正弦相位调制参数的优化分析()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第33卷
期数:
2010年04期
页码:
53-57
栏目:
物理学
出版日期:
2010-12-20

文章信息/Info

Title:
Optimization Analysis of Modulation Parameters in Laser Diode Self-mixing Interferometry Based on Sinusoidal Phase Modulation
作者:
郭冬梅;
南京师范大学物理科学与技术学院, 江苏南京210046
Author(s):
Guo Dongmei
School of Physics and Technology,Nanjing Normal University,Nanjing 210046,China
关键词:
测量;  自混合干涉;  正弦相位调制;  调制参数
Keywords:
m easurem ent;  se l-fm ix ing in terferom etry;  sinuso ida l phasem odulation;  m odulation param eter
分类号:
TN247
摘要:
为了提高自混合干涉技术测量位移的精度,将正弦相位调制技术引入自混合干涉信号的分析中,相位调制由置于外腔中的电光调制器(EOM)实现,相位解调由FFT分析的方法得到.针对正弦相位调制自混合干涉测量技术用于位移测量时,电光调制器调制参数对相位解调的影响,分析了调制参数的优化选择依据.模拟分析及实验结果表明:正弦相位调制自混合干涉仪用于位移测量时,正确解调相位所需的最小调制频率和待测射靶面的振动频率和幅度的乘积成正比.调制幅度取1.23 rad时,可以减少激光束偏振态损失带来的测量误差.
Abstract:
In o rder to im prove the d isp lacem entm easurem ent accuracy o f the se l-f m ix ing interferom eter, s inuso ida l phase m odulating techn ique is introduced to the ana lysis o f se l-fm ix ing inte rference signa.l Phasem odulation is obtained by an e lectro-optic modu lator( EOM ) in the ex terna l cav ity and phase demodu lation is ach ieved by FFT ana lysis m ethod. The e ffect o fm odulation param eter on phase demodu lation is ana ly zed in sinuso ida l phasem odu la ting se l-f m ix ing interferom eter for disp lacem entm easurem en t. A rule fo r se lecting the modu lation param ete r is presen ted. The results of s imu la tion and exper im ents show that: them in imum modu la tion frequency needed to dem odulate the phase is d irectly proportional to the produc t of the am plitude and the frequency o f the exte rnal targ et. When the modu lation am plitude is 1. 23rad, the m easurement error caused by the loss o f po lariza tion is m in imum.

参考文献/References:

[ 1]W ang W M, Boy leW J O, G ra ttan K T V. Se l-f m ix ing interference in a diode laser: exper im enta l observations and theoret-i ca l ana ly sis[ J]. App lied Optics, 1993, 32( 9): 1 551-1 558.
[ 2]W ang M ing, La iGuangm in. A sel-fm ix ing inte rferom eter us ing an ex terna l dua l cav ity[ J]. M easurement Science and Techno logy, 2003, 14: 1 025-1 031.
[ 3]W ang M ing, LuM in, H ao Hu ,i et a .l Statistics o f the sel-f m ix ing speckle inter fe rence in a laser d iode and its app lication to the m easurem ent o f flow ve loc ity[ J]. Optics Comm un ications, 2006, 260( 1): 242-247.
[ 4]Ov ryn B, Andrew s J H. M easurem ent of changes in optical pa th length and reflectiv ity w ith phase- shifting laser feedback interferom etry[ J] . App lied Optics, 1999, 38( 10): 1 959-1 967.
[ 5]Guo Dongm e,i W ang M ing, Tan Suqing. Sel-fm ix ing inter fe rome ter based on sinuso ida l phase modulating technique [ J]. Optics Express, 2005, 13( 5) : 1 537-1 543.

相似文献/References:

[1]张小勇,等.基于神经网络逆运算的传感器非线性误差补偿[J].南京师大学报(自然科学版),2010,33(04):172.
　Zhang Xiaoyong,Liu Qing.Nonlinear Error Compensation of Sensor Based on Neural Network Inverse Operation[J].Journal of Nanjing Normal University(Natural Science Edition),2010,33(04):172.

备注/Memo

备注/Memo:
基金项目: 江苏省普通高校自然科学研究计划项目( 08KJB510008) . 通讯联系人: 郭冬梅, 讲师, 研究方向: 激光精密测量方面的研究. E-mail:guodongmei@ njnu. edu. cn
更新日期/Last Update: 2013-04-08