photoacoustic spectroscopy

In photoacoustic spectroscopy the need for sample treatment is minimal.

Photoacoustic spectroscopy measures the sound waves produced upon the absorption of radiation.

In photoacoustic spectroscopy there is no such limitation.

Photoacoustic spectroscopy is also useful for the opposite case of opaque samples, where the absorption is essentially complete.

Photoacoustic spectroscopy has become a powerful technique to study concentrations of gases at the part per billion or even part per trillion levels.

Photoacoustic spectroscopy is the measurement of the effect of absorbed electromagnetic energy (particularly of light) on matter by means of acoustic detection.

The future of low cost applications of photoacoustic spectroscopy may be the realization of fully integrated micromachined photoacoustic instruments.

For example, in photoacoustic spectroscopy, the photoacoustic signal is used to obtain the actual absorption of light in either opaque or transparent objects.

Under the direction of William Klemperer, Lehmann's graduate work involved studies of highly excited vibrational states using photoacoustic spectroscopy.

As with photoacoustic spectroscopy, photothermal spectroscopy is an indirect method for measuring optical absorption, because it is not based on the direct measure of the light which is involved in the absorption.