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>Lithographically patterned superconductor bolometer detectors for visible and near-infrared radiation incorporating wavelength-selective light-absorbing elements
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Lithographically patterned superconductor bolometer detectors for visible and near-infrared radiation incorporating wavelength-selective light-absorbing elements
Abstract: Composite dye/superconductor sensors which can discriminate different wavelengths of light in the visible and near- infrared regions have been fabricated. By lithographically patterning 1500 angstroms thick films of the superconductor YBa2Cu3O7$-$MIN$delta$/ on MgO substrates, arrays of microbridges have been created. A layer of dye dispersed in a polymeric matrix is deposited on top of each bridge to create the wavelength selective light absorbing element. Each meandering path bridge is approximately 20 $mu@m wide and approximately 10 mm long. The device functions in a different manner to traditional semiconductor-based light sensing technologies in which a dye structure serves the role of a filtering agent. Here, the response of the hybrid dye/superconductor element is amplitude at wavelengths strongly absorbed by the dye laser. Such devices represent the initial steps towards a larger structure capable of simultaneously sensing wavelength bands from the visible through to the infrared. In addition to dye sensitization method, another approach to adding wavelength selectivity to detectors is described here in which interference effects in micromachined microbolometers are exploited.!28
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机译:摘要:已制造出能够识别可见光和近红外区域中不同波长的光的染料/超导复合传感器。通过在MgO衬底上光刻图案化1500埃厚的超导体YBa2Cu3O7 $-$ MIN $ delta $ /的薄膜,创建了微桥阵列。分散在聚合物基体中的染料层沉积在每个桥的顶部,以创建波长选择光吸收元件。每个弯曲路径桥的宽度大约为20μm@ m,长度大约为10mm。该设备的功能与传统的基于半导体的光感测技术不同,在传统的基于半导体的光感测技术中,染料结构起着过滤剂的作用。在此,混合染料/超导元件的响应是染料激光器强烈吸收的波长处的振幅。这样的设备代表了迈向更大结构的初始步骤,该结构能够同时感测从可见光到红外的波段。除染料敏化方法外,本文还介绍了另一种增加检测器波长选择性的方法,其中利用了微机械测微辐射热计中的干扰效应。28
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