Dual-wavelength-excitation aerosol fluorescence spectra detection using combined spectrometer with Czerny-Turner design.
Spectrochim Acta A Mol Biomol Spectrosc
; 277: 121260, 2022 Sep 05.
Article
em En
| MEDLINE
| ID: mdl-35447557
ABSTRACT
We developed a dual-wavelength-excitation aerosol fluorescence spectra detection device prototype. In our system, the 263 nm and 355 nm lasers are used to sequentially excite the fluorescence of aerosol stream, which is located spatially and temporally by two crossed infrared lasers; a bifurcated fiber bundle is applied to receive the fluorescence spectra of 274-463 nm and 374-565 nm. Besides, with a 32-channel photomultiplier tube as detector, a self-developed combined spectrometer with Czerny-Turner design is employed to detect the two band spectra in a preset timing sequence. Experiments show that the system can detect the fluorescence spectra, after dual-wavelength-excitation, of three intrinsic fluorophore samples and three bioaerosol samples.
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Base de dados:
MEDLINE
Assunto principal:
Lasers
/
Luz
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article