Acta Optica Sinica, Volume. 30, Issue 2, 597(2010)
Design and Fabrication of Short-Wave /Long-Wave Infrared Dichroic Beam Splitter
Short-wave /long-wave infrared dichroic beam splitters take an important role in two-band infrared imaging optical systems. The choice of substrate and coating materials are discussed. Ge,ZnSe and YbF3 were chosen as film materials and ZnSe as substrate; The coating reflecting the shortwave infrared light while transmiting the longwave infrared (8-12 μm) light is analyzed,and the beam splitter is manufactured by electronic-beam evaporation. The measured reflectivity and transmittance of corresponding band are all above 93%. Such dichroic beam splitters have been successfully applied to the actual optical system.
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Zhang Yueguang, Wang Ying, Sun Xuezheng, Shen Weidong, Liu Xu, Gu Peifu. Design and Fabrication of Short-Wave /Long-Wave Infrared Dichroic Beam Splitter[J]. Acta Optica Sinica, 2010, 30(2): 597
Category: Thin Films
Received: Feb. 19, 2009
Accepted: --
Published Online: Feb. 2, 2010
The Author Email: Yueguang Zhang (zhangyueguang@zju.edu.cn)