Infrared spectroscopy in the 3–20 μm spectral window has evolved from a routine laboratory
technique into a state-of-the-art spectroscopy and sensing tool by benefitting from recent …

The vast majority of gaseous chemical substances exhibit fundamental rovibrational
absorption bands in the mid-infrared spectral region (2.5–25 μm), and the absorption of light …

Laser absorption spectroscopy combined with spectral analysis has been extensively
investigated in detection and measurements of gas samples because of their broad …

摘要随着半导体激光器的发展, 可调谐二极管激光吸收光谱(TDLAS) 技术有了巨大的进步,
应用领域迅速扩大. 已经有超过1000 种TDLAS 仪器应用于连续排放监测以及工业过程控制等 …

A quantum cascade laser-based sensor for ambient air monitoring is presented and five
gases, affecting the air quality, can be quantified. The light sources are selected to measure …

Nitric oxide (NO) is one of the primary air pollutants, and open optical path detection of NO
holds immense significance in safeguarding the ecological environment and human health …

The implementation of a sensitive and selective as well as industrial fit gas sensor prototype
based on wavelength modulation spectroscopy with second harmonic detection (2 f-WMS) …

Exhaust parameters of an engine carry vital information that can help to understand its
transient duty cycles. We developed a mid-infrared wavelength modulation spectroscopic …

A mid-infrared (MIR) laser absorption spectroscopy (LAS) sensor was developed for
temperature, CO, NO, and CO _2 measurements at 5 kHz in engine-out exhaust. It used fiber …

We present a mid-infrared spectroscopic system based on a spectral-coding approach
enabled by a modified digital micromirror device (DMD). A supercontinuum source offering a …