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. 2021 Jan 1;10:1. doi: 10.1038/s41377-020-00435-z

Fig. 4. Dynamic-range-expanded MIR photothermal QPI of silica microbeads.

Fig. 4

a OPD images measured by DH (left) and ADRIFT-DH (right) in the MIR OFF state. b Images of the photothermal OPD changes due to absorption of the MIR pump light measured by DH (left) and ADRIFT-DH (right). c Cross-sectional profiles along the white dotted lines in (b). The blue and orange plots represent the results obtained by DH and ADRIFT-DH, respectively