Evanescent-wave photoacoustic spectroscopy with optical micro/nano fibers
| Autor: | Zhi-Bo Liu, Wei Jin, Yingchun Cao, Lut Hoi Ho |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Optical fiber Absorption spectroscopy business.industry Atomic and Molecular Physics and Optics law.invention Optics Zero-dispersion wavelength law Insertion loss Optoelectronics business Spectroscopy Absorption (electromagnetic radiation) Photoacoustic spectroscopy Photonic-crystal fiber |
| Zdroj: | Optics letters. 37(2) |
| ISSN: | 1539-4794 |
| Popis: | We demonstrate gas detection based on evanescent-wave photoacoustic (PA) spectroscopy with tapered optical fibers. Evanescent-field instead of open-path absorption is exploited for PA generation, and a quartz tuning fork is used for PA detection. A tapered optical fiber with a diameter down to the wavelength scale demonstrates detection sensitivity similar to an open-path system but with the advantages of easier optical alignment, smaller insertion loss, and multiplexing capability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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