Welcome to the Diebold Lab
The process of sound wave generation by light, known as the photoacoustic effect, is quite general and can be initiated in liquids and solids as well as gases. The Diebold group has focused on photoacoustic research for several decades, investigating fundamental phenomena and new effects. Current research includes ultrasensitive detection of trace gases such as atmospheric pollutants. The method employs an infrared grating that moves at the speed of sound, greatly enhancing detection limits. A new method for determining ultra small temperature differences has been investigated where differential temperatures of 30 micro Kelvins have been recorded. Experiments with the "inverse" photoacoustic effect have shown that the photoacoustic effect can be used for determining infrared emissivities. Over the years, effort in the group has been devoted to high frequency transient grating experiments, a photoacoustic recording method that has extremely high time resolution. Other research directions for the Diebold group include introduction of a completely new imaging method based on the ultrasonic vibration potential.
Our Research Areas:
- Cryogenic Ultrasensitive Temperature Detection
- Optical Radiation Pressure for Levitation of Micron Sized Spheres
- The Photoacoustic Pyrometer
- Vibration Potential and Photoacoustic Imaging
Click the links on the left to learn more about our research, our group, and our publications.
site updated 1/17/2018