翠绿宝石激光与二极管激光用于深肤色和中等肤色脱毛的比较：哪种更好？
Comparison of Alexandrite and Diode Lasers for Hair Removal in Dark and Medium Skin: Which is Better?
作者信息
Mustafa Farhad Hamad, Jaafar Mohamad Suhimi, Ismail Asaad Hamid, Mutter Kussay Nugamesh
机构信息
Medical Physics and Radiation Science, College of Pharmacy, Hawler Medical University, 44002 Erbil, Iraq.
Medical Physics and Laser Research Group, School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia.
出版信息
J Lasers Med Sci. 2014 Fall;5(4):188-93.
INTRODUCTION
To improve laser hair removal (LHR) for dark skin, the fluence rate reaching the hair follicle in LHR is important. This paper presents the results of a comparative study examining the function of wavelength on dark skin types using 755 nm alexandrite and 810 nm diode lasers.
METHODS
The structure of the skin was created using a realistic skin model by the Advanced Systems Analysis Program.
RESULT
In this study, the alexandrite laser (755 nm) and diode laser (810 nm) beam-skin tissue interactions were simulated. The simulation results for both lasers differed. The transmission ratio of the diode laser to the dark skin dermis was approximately 4% more than that of the alexandrite laser for the same skin type. For the diode laser at skin depth z = 0.67 mm, the average transmission ratios of both samples were 36% and 27.5%, but those for the alexandrite laser at the same skin depth were 32% and 25%.
CONCLUSION
Both lasers were suitable in LHR for dark skin types, but the diode laser was better than the alexandrite laser because the former could penetrate deeper into the dermis layer.
引言
为了改善深色皮肤的激光脱毛效果，激光脱毛过程中到达毛囊的能量密度很重要。本文展示了一项比较研究的结果，该研究使用755纳米翠绿宝石激光和810纳米二极管激光，检验波长对深色皮肤类型的作用。
方法
通过高级系统分析程序使用逼真的皮肤模型创建皮肤结构。
结果
在本研究中，模拟了翠绿宝石激光（755纳米）和二极管激光（810纳米）与皮肤组织的相互作用。两种激光的模拟结果不同。对于相同皮肤类型，二极管激光向深色皮肤真皮层的透射率比翠绿宝石激光约高4%。对于皮肤深度z = 0.67毫米处的二极管激光，两个样本的平均透射率分别为36%和27.5%，但在相同皮肤深度处，翠绿宝石激光的平均透射率分别为32%和25%。
结论
两种激光都适用于深色皮肤类型的激光脱毛，但二极管激光优于翠绿宝石激光，因为前者能更深地穿透到真皮层。
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