First direct measurement of the spatial coherence of sunlight.
نویسندگان
چکیده
Direct sunlight is often deemed incoherent, hence unsuitable for antenna power conversion. However, all radiation exhibits spatial coherence when detected on a sufficiently small scale. We report the first direct measurement of the spatial coherence of solar beam radiation, achieved with a customized tabletop cyclic-shearing interferometer. Good agreement is found between experiment and theory, with promising ramifications for solar aperture antennas.
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ورودعنوان ژورنال:
- Optics letters
دوره 37 17 شماره
صفحات -
تاریخ انتشار 2012