Ontology highlight
ABSTRACT:
SUBMITTER: Lin Y
PROVIDER: S-EPMC5180182 | biostudies-literature | 2016 Dec
REPOSITORIES: biostudies-literature
Scientific reports 20161223
Gas detection with hollow-core photonic bandgap fibre (HC-PBF) and pulsed photothermal (PT) interferometry spectroscopy are studied theoretically and experimentally. A theoretical model is developed and used to compute the gas-absorption-induced temperature and phase modulation in a HC-PBF filled with low-concentration of C<sub>2</sub>H<sub>2</sub> in nitrogen. The PT phase modulation dynamics for different pulse duration, peak power and energy of pump beam are numerically modelled, which are su ...[more]