The detection and measurement of gas concentrations using the characteristic optical
absorption of the gas species is important for both understanding and monitoring a variety of …

Optical spectroscopy has a broad scientific basis in chemistry, physics, and material science,
with diverse applications in medicine, pharmaceuticals, agriculture, and environmental …

Laser absorption spectroscopy (LAS) is a promising diagnostic method capable of providing
high-bandwidth, species-specific sensing, and highly quantitative measurements. This …

We report a multi-pass tunable diode laser absorption spectrometer based on the frequency-
modulation spectroscopy (FMS) technique. It has the advantage of high scan speed and is …

We investigate the interaction of light and gas in strongly scattering nano-and macroporous
media. Manufacturing and structural characterization of ZrO 2, Al 2 O 3 and TiO 2 ceramics …

In the process of methane measurement based on tunable diode laser absorption
spectroscopy (TDLAS), the interference fringes generated by the multiple reflections and …

The monitoring sensitivity of dissolved C 2 H 2 in transformer oil is crucial to ensuring the
safe operation of electric power systems. A highly sensitive sensor system based on fixed …

Optical fringes constitute one of the major obstacles in the gas detection based on
wavelength modulation spectroscopy (WMS). In order to suppress optical fringes, a …

A sensitive carbon disulfide (CS 2) sensor based on wavelength modulation spectroscopy
(WMS) in the mid-infrared fingerprint region was reported. The strong band spectrum of …

Standoff detection is of great significance in greenhouse gas measurement monitoring, early
warning security and leak detection. Variations in topographic characteristics and distances …