Supercontinuum sources are all-fiber pulsed laser-driven systems that provide high power
spectral densities within ultra-broadband spectral ranges. The tailored process of generating …

Human exhaled breath consists of more than 3000 volatile organic compounds, many of
which are relevant biomarkers for various diseases. Although gas chromatography has been …

A near-infrared (NIR) sub-ppm level photoacoustic sensor for hydrogen sulfide (H_2S) using
a differential Helmholtz resonator (DHR) as the photoacoustic cell (PAC) was presented …

A novel photoacoustic spectroscopy (PAS) gas sensor based on multi-resonator T-type
photoacoustic cell (MRT-PAC) with the merits of compact size and simple structure is …

Greenhouse gas (GHG) detection plays an important role in climate change research and
industry applications. A novel photoacoustic spectroscopy (PAS) sensor based on multiple …

Azodicarbonamide (ADA) is widely used as a flour additive due to its oxidizing and
bleaching properties, but it reacts with wet flour during heat processing and is easily …

Exhaled breath analysis is considered an effective tool for diagnosing the patient's metabolic
status because of its non‐invasive nature. Gas chromatography‐mass spectrometry (GC …

An optical scheme for simultaneous detection of hydrogen sulfide (H2S) and carbon dioxide
(CO2) is demonstrated. A near infrared tunable diode laser operating at 1.578 μm including …

This article presents a dual-wavelength band broadband photoacoustic spectroscopy
(BPAS) technique ideally suited to low-energy broadband sources for industrial and …

It is still a high challenge to develop a simple, sensitive and portable approach for bioassay
in strong scattering medium. Herein, a photoacoustic (PA) device is developed for the …