Kosterev A A, Bakhirkin Yu A, Curl R F, Tittel F K
Opt Lett. 2002 Nov 1;27(21):1902-4. doi: 10.1364/ol.27.001902.
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.
描述了一种在气体介质中检测微弱光声信号的新方法。声能不是在充气的共振声腔中积累，而是在高Q值晶体元件中积累。利用石英表音叉进行的可行性实验表明，其灵敏度为1.2×10⁻⁷厘米⁻¹瓦/根号赫兹。讨论了该技术潜在的进一步发展和应用。
