Hordvik A, Skolnik L
Appl Opt. 1977 Nov 1;16(11):2919-24. doi: 10.1364/AO.16.002919.
A new photoacoustic technique is used for quantitatively determining surface and bulk absorption losses at HF/DF laser wavelengths. Materials investigated include Si, GaAs, ZnSe, Al(2)O(3), MgO, MgF(2), CaF(2), SrF(2), BaF(2), LiF, and KMgF(3). Although several materials show predicted intrinsic bulk absorption at 3.8 microm, no material is found to exhibit predicted intrinsic absorption loss at 2.7 microm. High surface absorption at both HF and DF laser frequencies general ly dominate over-all absorption losses for most of the materials tested.
一种新的光声技术用于定量测定HF/DF激光波长下的表面和体吸收损耗。所研究的材料包括硅、砷化镓、硒化锌、氧化铝、氧化镁、氟化镁、氟化钙、氟化锶、氟化钡、氟化锂和氟镁酸钾。尽管几种材料在3.8微米处显示出预测的本征体吸收，但未发现有材料在2.7微米处表现出预测的本征吸收损耗。对于大多数测试材料，HF和DF激光频率下的高表面吸收通常在总体吸收损耗中占主导地位。
