| Autor: |
Philipp Elmlinger, Martin Schreivogel, Simon Weida, Michael Kneissl |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Proceedings, Vol 1, Iss 4, p 556 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2504-3900 |
| DOI: |
10.3390/proceedings1040556 |
| Popis: |
Continuing advances in the development of light-emitting diodes (LEDs) in the deep ultraviolet spectral range (DUV) enable miniaturized, mobile, and cost-effective DUV gas sensors. Efficient light coupling, guiding, and splitting plays a key role for stable sensor systems and is realized by lowloss silica based waveguides, fabricated by ultrashort pulsed laser etching and laser polishing. The tapered waveguide leads to a significantly higher efficiency with less required space compared to optical fibers or free beam setups, respectively. Toxic gases like NO2 and SO2 were successfully measured down to 1 ppm utilizing LEDs with wavelengths of 395 nm and 280 nm. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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