Modulation Frequency Multiplexed Tunable Diode Laser Spectroscopy System for Simultaneous CO, CO2 Measurements

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2006,（9）
• 页码范围: 2446-2449
• 页数: 4页
• 语种: 英文

摘要

A modulation frequency multiplexed dual diode-laser system is developed for simultaneous detection of the two most common fire gas products CO and CO2. Simultaneous detection is achieved by modulating each laser at different frequencies, demodulating the signal by a pair of lock-in amplifiers for each gas.