Short pulse laser induced thermo-elastic deformation imaging

Tianshi Wang; Tom Pfeiffer; Min Wu; Wolfgang Wieser; Wolfgang Draxinger; Antonius F. W. van der Steen; Robert Huber; Gijs van Soest

doi:10.1117/12.2251502

15 February 2017 Short pulse laser induced thermo-elastic deformation imaging

Tianshi Wang, Tom Pfeiffer, Min Wu, Wolfgang Wieser, Wolfgang Draxinger, Antonius F. W. van der Steen, Robert Huber, Gijs van Soest

Author Affiliations +

Proceedings Volume 10062, Optical Interactions with Tissue and Cells XXVIII; 100620C (2017) https://doi.org/10.1117/12.2251502
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

Absorption of nanosecond laser pulses induces rapid thermo-elastic deformation in tissue, i.e. a sub-micrometer scale displacement happens within a couple of microseconds. In this study, we initially investigate the depth-resolved deformation using a 1.5 MHz phase-sensitive optical coherence tomography (OCT) system. Functional images can be reconstructed based on the detected deformation, which enables a new imaging modality called thermo-elastic deformation imaging (TDI). Our results show that the associated displacement is related to the optical absorption of the short laser pulses. The TDI images can provide tissue type information in addition to the conventional OCT images.

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Citation Download Citation

Tianshi Wang, Tom Pfeiffer, Min Wu, Wolfgang Wieser, Wolfgang Draxinger, Antonius F. W. van der Steen, Robert Huber, and Gijs van Soest "Short pulse laser induced thermo-elastic deformation imaging", Proc. SPIE 10062, Optical Interactions with Tissue and Cells XXVIII, 100620C (15 February 2017); https://doi.org/10.1117/12.2251502

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