Figure 4
(a) Cattle femur bone used in this study. The encircled region corresponds to the position, at which the bone sample was obtained. (b) optical extinction spectrum of the simulated bone sample (inset). The bands indicated by red and green bars are attributed to absorption due to water and lipid, respectively, after Bashkatov et al.20. (c) OSL from the ZrO2 sample observed by the irradiation of NIR-laser light without the bone sample. (d) The OSL from the ZrO2 sample stimulated by the laser light through the bone sample. Dashed line indicates the contour of bone sample, which was settled in front of the NIR-laser diode. The blue emission of OSL could be observed in the ZrO2 sample region as well as the observation without the bone sample as indicated by dashed red circles. (e) The intensity of the afterglow PL and subsequent OSL as a function of time in the ZrO2 sample stimulated by the laser light through the bone sample.
