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    • 7. 发明申请
    • Tuning optical cavities
    • 调谐光腔
    • US20080187011A1
    • 2008-08-07
    • US11702320
    • 2007-02-05
    • Peter KieselOliver SchmidtMichael BasslerUma Srinivasan
    • Peter KieselOliver SchmidtMichael BasslerUma Srinivasan
    • H01S3/098H01S3/08
    • H01S3/08081G01J3/26H01S3/105
    • An inhomogeneous optical cavity is tuned by changing its shape, such as by changing reflection surface positions to change tilt angle, thickness, or both. Deformable components such as elastomer spacers can be connected so that, when deformed, they change relative positions of structures with light-reflective components such as mirrors, changing cavity shape. Electrodes can cause deformation, such as electrostatically, electromagnetically, or piezoelectrically, and can also be used to measure thicknesses of the cavity. The cavity can be tuned, for example, across a continuous spectrum, to a specific wavelength band, to a shape that increases or decreases the number of modes it has, to a series of transmission ranges each suitable for a respective light source, with a modulation that allows lock-in with photosensing for greater sensitivity, and so forth. The optical cavity can be a linear variable filter fabricated on the photosensitive surface of a photosensing component such as a photosensor array or a position-sensitive detector.
    • 通过改变其形状来调整不均匀的光学腔,例如通过改变反射面位置来改变倾斜角,厚度或两者。 变形部件如弹性体间隔件可以连接,使得当变形时,它们改变结构与诸如反射镜的光反射部件的相对位置,改变腔体形状。 电极可能导致变形,例如静电,电磁或压电,也可用于测量腔的厚度。 空腔可以例如通过连续光谱被调谐到特定波长带,以使其具有的模式数量增加或减少的形状调整到各自适用于相应光源的一系列传输范围,其中 允许通过光敏锁定来实现更高灵敏度的调制,等等。 光腔可以是制造在诸如光电传感器阵列或位置敏感检测器的感光部件的感光表面上的线性可变滤波器。