| 20110214479 | Method and apparatus for the photo-acoustic identification and quantification of analyte species in a gaseous or liquid medium - A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal. | 09-08-2011 |
