This paper introduces the necessity of doublebeam splitting system applicating in polarization interference phase subdivision and the optimized principle of this beam splitting system.
本文介绍偏振干涉相位细分中应用双光束分光系统的必要性，分光系统的优选原理及结构。
2
The principle and an experiment device are introduced by which the measurement of the relative concentration of lotion is carried out continuously with the doublebeam system of laser.
采用双光路激光系统，对清洗液的相对浓度进行了连续测量，给出了测定原理和实验装置。
3
A double focusing, non spatial dispersion magnet design has been suggested to substitute the achromatic principle for improving the beam characteristics on target of the medical accelerator.