Abstract
We report on what we believe is the first demonstration of laser-induced fluorescence (LIF) in flames by use of diode lasers. Indium atoms seeded into an atmospheric-pressure flame at trace concentrations are excited by a blue GaN laser operating near 410 nm. The laser is mounted in an external-cavity configuration, and the hyperfine spectrum of the 5(2)P(1/2) → 6(2)S(1/2) transition is captured at high resolution in single-wavelength sweeps lasting less than one tenth of a second. The research demonstrates the potential of diode-based LIF for practical diagnostics of high-temperature reactive flows.
Original language | English |
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Pages (from-to) | 827-829 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 29 |
Issue number | 8 |
DOIs | |
Publication status | Published - 15 Apr 2004 |
Keywords
- indium hyperfine
- atmospheric-pressure
- diode-laser-induced
- fluorescence