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网状靶面可以改善热释电摄象管(PEV)的分辨率。用一般离子研磨法把TGS系材料的靶面网状化,而DTGFB材料的靶面,在通常条件下,用一般的离子研磨技术进行网状化就比较困难。本文讨论了用复合离子研磨技术所得到的结果。在制作DTGFB靶面时,采用这一技术,获得了纵横比为4:1,而在这样容易损坏的材料中,并没有出现常见的物理或化学损伤。我们制备了几支DTGS和DTGFB网状靶面的热释电摄象管,并对管子进行了测试。测试结果表明,DTGS网状靶面的管子的灵敏度和调制传递函数(MTF)都有很大提高,而DTGFB网状靶面的管子与非网状靶面管子相比,灵敏度和调制传递函数(MTF)也有一定的改进。
Mesh target surface can improve the resolution of pyroelectric tube (PEV). The surface of the TGS-based material is reticulated by a common ion milling method, and the surface of the DTGFB material is more difficult to re-form under normal conditions by the usual ion milling technique. This article discusses the results obtained with the composite ion milling technique. With this technique, an aspect ratio of 4: 1 is obtained when making DTGFB target surfaces, and no common physical or chemical damage occurs in such easily damaged materials. We have produced several pyroelectric tubes with DTGS and DTGFB mesh targets and tested the tubes. The test results show that the sensitivity and the modulation transfer function (MTF) of the tube of the DTGS mesh target are greatly increased, while the sensitivity and the modulation transfer function of the tube of the DTGFB mesh target (compared with the non-mesh target tube) MTF) also have some improvement.