Guo Y, Ho P P, Tirksliunas A, Liu F, Alfano R R
Appl Opt. 1996 Dec 1;35(34):6810-3. doi: 10.1364/AO.35.006810.
Second- and third-harmonic generations of femtosecond and picosecond laser pulses have been measured from chicken skin, muscle, and fat tissues. The magnitude of the harmonic signals showed a strong structural dependence with the signal from skin interface being the strongest. The polarization dependence of the signal was also measured and found to be consistent with the fact that the tissue samples were highly scattering random media. The second-harmonic- and third-harmonic-generation conversion efficiencies were found to be in the range of ~10(-7) to ~10(-10).
已测量了飞秒和皮秒激光脉冲在鸡皮、肌肉和脂肪组织中的二次谐波和三次谐波产生情况。谐波信号的幅度显示出强烈的结构依赖性，其中皮肤界面的信号最强。还测量了信号的偏振依赖性，发现与组织样本是高度散射随机介质这一事实相符。二次谐波和三次谐波产生的转换效率在约10^(-7)至约10^(-10)的范围内。
