强激光与粒子束2011，Vol.23Issue(6)：1483-1486,4.DOI:10.3788/HPLPB20112306.1483
连续波腔衰荡光谱系统的电路设计与应用
Electrocircuit design and application in continuous-wave cavity ring-down spectroscopy system
谭中奇 1冯先旺 1龙兴武1
作者信息
- 1. 国防科学技术大学光电科学与工程学院,长沙410073
- 折叠
摘要
Abstract
For the convenient application of continuous-wave cavity ring-down spectroscopy(CW-CRDS), a compact measure system based on the DSP technique is presented. The DSP system is capable of signal adjustment, high-speed signal acquisition, and data processing. It is used to replace a test system composed of high-speed A/D card and computer in the traditional CW-CRDS measure system, to obtain and fit the ring-down signal. The fastest acquisition speed of the DSP system can reach 80 MHz with the A/D resolution of 16 bits, thus it can obtain the ring-down signal and determine the ring-down time accurately. Experiments show that the DSP system can achieve the noise-equivalent(RMS) absorption coefficient of about 1. 0× 10-8 cm-1 in an optical feedback CW-CRDS system, and its repeatability at a single laser wavelength is about 3%0.关键词
腔衰荡光谱技术/数字信号处理系统/数据拟合/信号调理Key words
cavity ring-down spectroscopy/ digital signal processing system/ data fitting/ signal adjustment分类
数理科学引用本文复制引用
谭中奇,冯先旺,龙兴武..连续波腔衰荡光谱系统的电路设计与应用[J].强激光与粒子束,2011,23(6):1483-1486,4.
