Figure | Laser-driven NIR-II device and luminescence properties. (IMAGE)
Caption
Figure | Laser-driven NIR-II device and luminescence properties. a The schematic diagram of the laser-driven NIR-II device and NIR optical measurement system. The insets are photographs of (i) the collimator, images of the working NIR-II lighting source taken by (ii) visible camera and (iii) NIR-II camera. b NIR-II output power of laser-driven NIR-II device based on MgO:x%Ni2+,0.3%Cr3+ (x = 0.1-0.7) ceramics under different incident blue laser power densities. The inserts are thermographs of the irradiation spot of MgO:0.3%Ni2+,0.3%Cr3+ceramic at 10, 15 and 20 W/mm2 blue laser excitation, respectively. c Input-power-density dependent PL spectra of MgO:0.3%Ni2+,0.3%Cr3+ ceramic. d Luminescence stability of MgO:0.3%Ni2+,0.3%Cr3+ ceramic under continuous 1 and 5 W/mm2 blue laser excitation for 120 min. The inserts are thermographs of the irradiation spot of this ceramic at 1 and 5 W/mm2 blue laser excitation for 1 and 120 min, respectively.
Credit
Simin Gu et al.
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Credit must be given to the creator.
License
CC BY