国外电子测量技术
國外電子測量技術
국외전자측량기술
FOREIGN ELECTRONIC MEASUREMENT TECHNOLOGY
2009年
6期
28-30
,共3页
波长调制光谱%半导体激光器%气体%谐波
波長調製光譜%半導體激光器%氣體%諧波
파장조제광보%반도체격광기%기체%해파
wavelength modulation spectrum%semiconductor laser%gas%harmonic
基于谐波检测技术,对波长调制光谱进行了理论研究,给出了分析信号各阶谐波分量的表达式.对洛仑兹线型和高斯线型描述下的气体吸收光谱进行了分析,求出了各自二次谐波分量的表达式及两者之间的相互关系.建立了剩余幅度调制和光学干涉信号两大影响因素的数学模型,提取了二者产生的二次谐波分量的表达式,给出了相应的抑制方法.通过调节调制信号的幅度降低干涉信号的影响,以取得最大的信噪比,对于较高信噪比的获得,将在半导体激光器中得到进一步应用.
基于諧波檢測技術,對波長調製光譜進行瞭理論研究,給齣瞭分析信號各階諧波分量的錶達式.對洛崙玆線型和高斯線型描述下的氣體吸收光譜進行瞭分析,求齣瞭各自二次諧波分量的錶達式及兩者之間的相互關繫.建立瞭剩餘幅度調製和光學榦涉信號兩大影響因素的數學模型,提取瞭二者產生的二次諧波分量的錶達式,給齣瞭相應的抑製方法.通過調節調製信號的幅度降低榦涉信號的影響,以取得最大的信譟比,對于較高信譟比的穫得,將在半導體激光器中得到進一步應用.
기우해파검측기술,대파장조제광보진행료이론연구,급출료분석신호각계해파분량적표체식.대락륜자선형화고사선형묘술하적기체흡수광보진행료분석,구출료각자이차해파분량적표체식급량자지간적상호관계.건립료잉여폭도조제화광학간섭신호량대영향인소적수학모형,제취료이자산생적이차해파분량적표체식,급출료상응적억제방법.통과조절조제신호적폭도강저간섭신호적영향,이취득최대적신조비,대우교고신조비적획득,장재반도체격광기중득도진일보응용.
Based on the harmonic waves examination technology, the paper conducts the theoretical research to the wave-length modulating spectrum and conveys the expressions of various amount of harmonic waves in the analyzing signals. It analyzes the gas absorbing spectrum according to the linear description of Lorentz and Gauss, and extracts the expressions of respective second harmonic component and their interrelationship. It establishes the models of residual amplitude modulation and interference of optical signals and extracts the expressions of second harmonic generation and relevant suppressions. The work to reduce the interfering signal through modulating the signal's scope to obtain the greatest signal-to-noise ratio, which is expected to be further applied in the semiconductor laser.
