title: Quartz-enhanced photoacoustic spectroscopy.
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.
authors.forename: A A
authors.initials: AA
authors.lastname: Kosterev
authors.forename: Yu A
authors.initials: YA
authors.lastname: Bakhirkin
authors.forename: R F
authors.initials: RF
authors.lastname: Curl
authors.forename: F K
authors.initials: FK
authors.lastname: Tittel