光学
干涉测量
材料科学
飞秒
吸收(声学)
纳秒
超短脉冲
吸收光谱法
连贯性(哲学赌博策略)
光谱学
超快激光光谱学
频率梳
可调谐激光吸收光谱技术
激光器
物理
量子力学
作者
B. B. Jin,Linhua Jia,Fumin Zhang,Xinghua Qu,Jihui Zheng,Qiong Niu,Wanghang Gu
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-04-05
卷期号:48 (8): 2034-2034
被引量:1
摘要
There is an increasing demand for high-precision gas absorption spectroscopy in basic research and industrial applications, such as gas tracking and leak warning. In this Letter, a novel, to the best of our knowledge, high-precision and real-time gas detection method is proposed. A femtosecond optical frequency comb is used as the light source, and a broadening pulse containing a range of oscillation frequencies is formed after passing through a dispersive element and a Mach-Zehnder interferometer. Four absorption lines of H13C14N gas cells are measured at five different concentrations within a single pulse period. A single scan detection time of only 5 ns is obtained along with a coherence averaging accuracy of 0.0055 nm. High-precision and ultrafast detection of the gas absorption spectrum is accomplished while overcoming complexities related to the acquisition system and light source that are encountered in existing methods.
科研通智能强力驱动
Strongly Powered by AbleSci AI