Digital micro-mirror device-based detector for particle-sizing instruments via Fraunhofer diffraction

作者：Zhou Jiayi; Cao Zhang^*; Xie Heng; Xu Lijun

来源：Applied Optics, 2015, 54(18): 5842-5849.

DOI：10.1364/AO.54.005842

In this paper, a digital micro-mirror device (DMD)-based detector is proposed for the detection of light intensity in particle-sizing instruments using Fraunhofer diffraction. The detector consists of only one photodiode, which eliminates the distortions caused by the nonuniformity of the detector arrays used in traditional instruments. The center of the diffraction pattern was accurately located to distribute the optimized arc-shaped mirror arrays for the intensity detection. Both simulated and experimental results showed that the proposed detector was superior to the classical one as it was less sensitive to noise than the detector arrays used in traditional systems.

• 出版日期2015-6-20
• 单位北京航空航天大学