An adaptive confocal photothermal microscope was developed to perform thermal diffusivity measurements on irregular surfaces at the micrometer scale. The developed equipment automatically aligns an optical system having precise control of the position and angle of the beams on the sample. Several studies on samples with various surfaces are presented and the alignment algorithms are described.
KEYWORDS: Confocal microscopy, Telescopes, Microscopy, Lenses, Cameras, Laser beam diagnostics, Digital video discs, Optical engineering, Monte Carlo methods, Modulation
An adaptive telescope was developed to perform measurements using the confocal photothermal microscopy technique. The telescope automatically aligns to reinject the reflected probe beam as the measurement scans over irregular surfaces. The system uses DVD lenses that adapt to surfaces through controlled movements. Alignment algorithms are presented along with measurements on complex surfaces.
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