The photothermal microscope is a laser-based technique which utilizes the crossed-beam thermal lens to measure simultaneously both absorbance and thermal diffusivity within small probe volumes. The microscope provides images with spatial resolution better than 1 μm3 in a simple optical design. High resolution images of histological and botanical samples are presented.
© 1987 Optical Society of America
Original Manuscript: May 20, 1987
Published: November 1, 1987
Dean S. Burgi and Norman J. Dovichi, "Submicrometer resolution images of absorbance and thermal diffusivity with the photothermal microscope," Appl. Opt. 26, 4665-4669 (1987)