Rosenstock H B, Hass M, Gregory D A, Harrington J A
Appl Opt. 1977 Nov 1;16(11):2837-42. doi: 10.1364/AO.16.002837.
Adiabatic laser calorimetry, which is the most widely used method for studying the absorption coefficients of low-loss materials, can be adapted to study both the bulk and surface absorption by using a long rod sample geometry. In the limiting case of small heat losses, calculations of the thermal rise curves obtained in laser calorimetry indicate that two regions of constant slope can be expected. The first of these can be identified with the bulk absorption coefficient only and the second with the sum of the surface and bulk absorptions. Experimental data illustrating this two-slope behavior are presented.
绝热激光量热法是研究低损耗材料吸收系数应用最为广泛的方法，通过使用长棒状样品几何结构，该方法可用于研究体吸收和表面吸收。在热损耗较小的极限情况下，激光量热法中热升温曲线的计算表明，可预期出现两个斜率恒定的区域。其中第一个区域仅可与体吸收系数对应，第二个区域则与表面吸收和体吸收之和对应。本文给出了说明这种双斜率行为的实验数据。
