共查询到19条相似文献,搜索用时 93 毫秒
1.
基于标量衍射理论设计了8位相菲涅尔衍射微透镜阵列.利用多次曝光和离子束刻蚀技术在大规模面阵(256×256)PtSi红外焦平面阵列的背面制作了单片集成微透镜阵列样品(单元面积为30μm×40μm).测试结果表明,单片集成微透镜的红外焦平面阵列样品的信噪比提高了2.0倍. 相似文献
2.
基于标量衍射理论设计了8位相菲涅尔衍射微透镜阵列.利用多次曝光和离子束刻蚀技术在大规模面阵(256×256)PtSi红外焦平面阵列的背面制作了单片集成微透镜阵列样品(单元面积为30μm×40μm).测试结果表明,单片集成微透镜的红外焦平面阵列样品的信噪比提高了2.0倍. 相似文献
3.
256×256 Si微透镜阵列与红外焦平面阵列单片集成研究 总被引:1,自引:0,他引:1
基于标量衍射理论设计了 8位相菲涅尔衍射微透镜阵列 .利用多次曝光和离子束刻蚀技术在大规模面阵( 2 5 6× 2 5 6) Pt Si红外焦平面阵列的背面制作了单片集成微透镜阵列样品 (单元面积为 3 0μm× 4 0μm ) .测试结果表明 ,单片集成微透镜的红外焦平面阵列样品的信噪比提高了 2 .0倍 . 相似文献
4.
5.
6.
微透镜阵列用于线列红外探测器的研究 总被引:2,自引:2,他引:0
采用离子束刻蚀制备了线列长方形拱面熔凝石英微透镜阵列,用准分子激光扫描消融法淀积了性能均匀而且稳定的YBa2Cu3O7-δ高温超导薄膜,用湿法刻蚀制备了超导薄膜器件,用微透镜阵列与超导薄膜器件耦合构成组合式红外探测器。 相似文献
7.
8.
大F数硅微透镜阵列的制作及光学性能测试研究 总被引:2,自引:0,他引:2
提出了一种补偿刻蚀法 :在经过常规光刻热熔成形和离子束刻蚀技术制成的硅微透镜阵列上再涂敷几层光刻胶 ,以降低各单元微透镜的曲率 ,然后再次进行加热固化和离子束刻蚀。扫描电子显微镜 ( SEM)显示微透镜阵列为表面极为平缓的球冠形阵列 ,表面探针测试结果显示用补偿刻蚀法制作的微透镜的 F数和 F′数分别可达到 31.62和 35.88,而常规光刻热熔法很难制作出 F数和 F′数分别超过 1.0 0和 4 .0 0的微透镜阵列。光学填充因子也由常规方法的 64.3%提高至78.5% ,并且微透镜的点扩散函数也更接近理想值 相似文献
9.
线列熔融石英微透镜阵列的光刻和氩离子束刻蚀制备 总被引:6,自引:1,他引:5
采用光刻和熔融成形法制备线列长方形供面光致抗蚀剂微透镜图形,采用固化技术对其作重整化处理,采用氩离子(Ar+)束刻蚀有效地实现线列长方形拱面光致抗蚀剂微透镜图形阵列向熔融石英(SiO2)基片上转移。所制单元熔融石英微透镜底部的外形尺寸为300×95μm2,平均冠高14.3μm,平均曲率半径为86μm,平均焦距为258.1μm平均F/数2.7,平均大T/数2.9;平均光焦度5.8×10(-3)折光度。扫描电子显微镜(SEM)和表面探针测试表明,所制成的线列熔融石英微透镜阵列的图形整齐均匀,每个单元长方形拱面熔融石英微透镜的轮廓清晰,表面光滑平整。实验结果证实,光刻/氩离子束刻蚀技术适用于制备具有良好的均匀性和光学质量的单片熔融石英微透镜阵列器件,此技术对于制备与大面阵凝视焦平面成像探测器相匹配的大面降微透镜阵列具有重要意义。 相似文献
10.
建立氩离子束对光刻蚀胶微透镜的刻蚀模型,模拟折射微透镜制备中的离子束刻蚀工艺过程。通过模拟可以在预先获得离子束在不同倾斜入射状态下所得到的折射微透镜的截面轮廓,为优化离子束的刻蚀工艺奠定基础,同时也可以确定刻蚀过程的终点时刻。 相似文献
11.
12.
13.
14.
15.
16.
A. T. Ping C. Youtsey I. Adesida M. Asif Khan J. N. Kuznia 《Journal of Electronic Materials》1995,24(4):229-234
Chemically assisted ion beam etching of gallium nitride (GaN) grown by metalorganic chemical vapor deposition has been characterized
using an Ar ion beam and Cl2gas. The etch rate of GaN was found to increase linearly with Ar ion beam current density, increase linearly then saturate
with Ar ion beam energy, vary slightly with Cl2 flow rate, and lastly, increase moderately with substrate temperature. Etch rates as high as 330 nm/min were obtained at
high beam energies and 210 nm/min at a more nominal level of 500 eV. The anisotropy of etched profiles improved in the presence
of Cl2 in comparison to those etched by Ar ion milling only. Elevated substrate temperatures further enhanced the anisotropy to
obtain near-vertical profiles for fairly deep-etched structures. Auger electron spectroscopy was used to investigate etch-induced
surface changes. Oxygen contamination was observed on the as-etched surface but a dilute HC1 treatment restored the stoichiometry
of the material to its unetched state. 相似文献
17.
A low temperature ion beam etching (IBE) process is successfully applied to facet mirror fabrication of 1.3 μm InGaAsP/InP buried heterostructure (BH) lasers. Ar ion beam etching characteristics of InP are studied and masking conditions are optimized for obtaining low-damage, vertical, and smooth etched facets. Lasers fabricated by this technique have threshold currents and quantum efficiencies comparable to those of lasers with conventionally cleaved mirrors. CW operation at room temperature has been achieved. Initial experimental results of preliminary aging tests are also presented. 相似文献
18.
19.
Microlens array is an important optical element to improve the photosensitivity of charge-coupled device (CCD). In this paper, a monolithic integration technology between microlens and 528 × 528 element PtSi Schottky-barrier infrared charge-coupled device (IRCCD) with a pixel size of 30μm × 30μm has been developed. The microlens array with low sag and long focal length is designed based on geometrical optics theory. It is directly formed on the back side of the substrate in IRCCD chip using successive photolithography and A+ ion beam etching (IBE) technology. The microlens array is characterized by both surface stylus and point spread function (PSF). The experiment results of integration device between IRCCD and microlens array indicate that the optical signal response is improved obviously and a responsivity increase by a factor of 1.8 in the operation band. 相似文献