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Quartz-enhanced photoacoustic spectroscopy |
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| Authors: | Kosterev A A Bakhirkin Yu A Curl R F Tittel F K |
| Abstract: | A new approach to detecting a weak photoacoustic signal in a gas medium is described. Instead of a gas-filled resonant acoustic cavity, the sound energy is accumulated in a high- Q crystal element. Feasibility experiments utilizing a quartz-watch tuning fork demonstrate a sensitivity of 1.2x10(-7) cm(-1) W/ radicalHz . Potential further developments and applications of this technique are discussed. |
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