吸收长度 meaning in English

a orption length
absorption length
absorption thickness

At first , modeling of these divvies by rate equations to obtain expressions for threshold and slope efficiency is given . on the case of this theory , the large numbers of literatures and datum are consulted , and the laser is home studied . through rationally selecting and improving the reflector surface , ensuring the beam quality , increasing farthest the absorption path , and improving effective pumping frequency ; through designing the water cooler of yag bar , the volume of laser is half the same internal and international production , and the output power is get to the extremum of the same international production
并在此基础上查阅了大量文献和资料，对该种激光器进行了深入的研究，通过对yag棒直径的合理选取并合理地改进反射镜面，从而既保证了光束质量又最大限度的增加了吸收长度，有效的提高了泵浦效率；在不影响泵浦的前提下，通过有效缩短yag棒的长度减小输出损耗；对yag棒的水冷系统进行优化结构设计，使激光器体积减小到国外同类产品体积的一半，而输出功率已达到国外同类产品的极限值。