Photothermal phase-shift signals in a flowing medium have been observed and found to be consistent with the theoretical predictions.
© 1998 Optical Society of America
Mahmood Soltanolkotabi and Rajendra Gupta, "Photothermal Phase-Shift Spectroscopy in a Flowing Medium: Experiment," Appl. Opt. 37, 7137-7142 (1998)