Abstract
A finite element method computation model for analyzing optothermal
interaction of polychromatic light and biology tissue is proposed and proven by
experiment. A continuous xenon lamp is employed as an example. First, the spectral
energy distribution of the xenon lamp is measured and found to be equivalent to a
series of quasi-chromatic light with different central wavelengths, different
energies, and certain bandwidth. Next, according to the reported thermal and optical
parameters of porcine skin and porcine liver, the temporal temperature distributions
of these tissues irradiated by each quasi-chromatic light are simulated. Then, the
thermal effect is superimposed to obtain the whole optothermal temporal temperature
distribution. Moreover, the optothermal response experiments of fresh porcine skin
and porcine liver tissues irradiated by continuous xenon lamp are carried out. The
results of the simulation and experiment are analyzed and compared, and are found to
be commendably matched.
© 2012 Chinese Optics Letters
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