Quantitative evaluation of the sensing performance of the resonance-enhanced photothermal synergistic fiber-optic TPP tip. (IMAGE)

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Quantitative evaluation of the sensing performance of the resonance-enhanced photothermal synergistic fiber-optic TPP tip.

Caption

Figure 3. Quantitative evaluation of the sensing performance of the resonance-enhanced photothermal synergistic fiber-optic TPP tip. (a) Schematic of the optical setup for photothermal assistance. (b) Real-time wavelength shifts of the TPP resonance mode under 785 nm laser illumination (top) and 980 nm laser illumination (bottom). (c) Response and recovery curves of the fiber-optic TPP tip under non-photothermal (blue), 785 nm photothermal (red), and 980 nm photothermal (green) conditions at a 3.5% hydrogen concentration. Comparisons of (d) response time, (e) recovery time, and (f) wavelength redshift for the fiber-optic TPP tip under three photothermal conditions across different hydrogen concentrations.

Credit

Xinran Wei, Yuzhang Liang, Ting Xu

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