Newport's VA-CB series of high energy variable beam splitters provide continuous beam splitting or attenuation for high energy, pulsed lasers such as Nd:YAG. The VA-CB series is designed to provide high contrast beam splitting of linearly polarized light. The motorized version can be used in open- or closed-loop operation.
The VA-CB high energy series is based on zero-order half-waveplates and high energy Nd:YAG polarizing cube beam splitters. These beam splitters are designed to handle high energy pulses up to 2 J/cm2 at fixed wavelengths including 248 nm, 266 nm, 355 nm, 405 nm, 532 nm and 1064 nm. These beam splitters can also be used with CW lasers at these specified wavelengths. 
The optics and high-precision opto-mechanics are incorporated into a compact housing, flexibly designed for post mounting at varying optical axis heights. P-polarized light is transmitted with minimal loss collinear to the input beam path while S-polarized light is reflected 90º. A removeable beam dump is included on the reflected beam port, transforming the VA-CB into a variable attenuator for the transmitted beam. M-4 and 8-32 mounting threads are included on the opposite side and bottom of the housing. This allows for various polarized output options. 
The motorized versions of the VA-CB series come with a motorized rotary stage containing the half-waveplate. Software is included which allows the user to calibrate one port of the VA-CB.

新港的VA-CB系列高能可变分束器为高能脉冲激光器(如Nd:YAG)提供连续的分束或衰减。VA-CB系列用于提供线性偏振光的高对比度光束分裂。电动版可用于开环或闭环操作。

基于零阶半波片和高能Nd:YAG偏光立方分束器的VA-CB高能系列。这些分束器设计用于处理高达2j /cm2的高能脉冲，波长为248 nm、266 nm、355 nm、405 nm、532 nm和1064 nm的固定波长。这些分束器也可用于特定波长的连续波激光器。

光学和高精度光学力学结合到一个紧凑的外壳，灵活设计后安装在不同的光轴高度。P-polarized光传播以最小的损失共线的输入光束路径而S-polarized光反映90º。反射波束端口包括一个可拆卸的波束转储，将VA-CB转换为传输波束的可变衰减器。M-4和8-32安装螺纹包括在外壳的另一侧和底部。这允许各种极化输出选项。

VA-CB系列的电动版本带有一个装有半波板的电动旋转台。软件允许用户校准VA-CB的一个端口。