样品瓶平移与旋转装置（CRTU）

许多凝胶状样品表现出非遍历行为，这在光散射上会导致测量误差。ALV开发了一款样品瓶平移与旋转装置（Cuvette Rotation and Translation Unit, CRTU），该装置允许测量非遍历性样品，如凝胶。其设计理念是，通过旋转和上/下移动，可以测量样品的不同散射中心，并且如果测量到足够多的点，则可以给出样品散射行为的系综平均值。该装置提供两种独立的运动，一个是逐步变速或连续旋转，另一个是逐步变速或连续上/下运动。当然，这两种运动是可以结合的。特殊的，高精度的滚珠轴承保证两种运动的高再现性。两个带齿轮的直流电机允许在很宽的范围内变速，而不会出现步进电机不可避免的“变形”。

去偏振动态光散射（DDLS）

该装置允许测量各向异性样品（如棒状粒子）的去偏振光散射，以安装在检测单元前的格兰-汤姆逊棱镜为分析元件。该棱镜安装在特殊的旋转支架上，该支架允许棱镜平面旋转，而无需松开光学检测调整。

激光

ALV/CGS-3装配有瑞典Cobolt AB品牌的50mw的DPSS激光器，660nm，稳定性高（输出功率波动小于±1%）。根据EN 60825-1/11.01标准，仪器激光安全等级在正常的操作测量状态下达到一级（Class 1）。（也可根据用户需求选配其他激光）

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