用Monte-Carlo方法模拟研究了激光波长632 nm与750 nm的高斯光束在苹果组织中传输的吸收、 散射光谱特性。 结果表明: 高斯光束特殊的能量分布特性对激光在苹果组织中的传播有重要的影响, 苹果组织对750 nm激光的反射、 吸收、 透射都较低, 有更多的光子在组织内部与组织相作用, 能够更清楚的反映组织内部信息。 因此, 在生物组织中近红外光波的传输性比较好, 便于应用于研究生物组织。

The present paper simulates laser wavelength 632 and 750 nm Gaussian beam migration in apple fruit tissue using Monte-Carlo method, and researches the spectral properties of absorption and scattering. It was shown that the special energy distribution characteristics of Gaussian beam influenced the diffusion of the laser in the tissue, the reflection, absorption and transmittance of 750 nm by tissue are lower, there are more photons interacting with tissue within the tissue, and they can more clearly reflect the information within the tissue. So, the transmission characteristics of the infrared light were relatively strong in biology tissue, which was convenient for researching biology tissue.