Slovick Brian, Bean Jeffrey, Florence Lou, Zummo Guy, Boreman Glenn
University of Central Florida, CREOL-The College of Optics and Photonics, Orlando, Florida 32816, USA.
Opt Express. 2011 Mar 28;19(7):5924-9. doi: 10.1364/OE.19.005924.
The degree of coherence of a partially coherent monochromatic optical field is measured with a dual-dipole phased-array antenna coupled to a metal-oxide-metal tunnel diode detector. For a two-element phased-array, the degree of coherence is a measure of the correlation of electric fields received by the antennas as a function of the element separation. To extract the coherence function from the measured antenna response, a calibration method is developed to remove propagation loss and device nonuniformity. Measurements at 10.6 µm are substantiated by electromagnetic simulations and compared to the result derived from the Van Cittert-Zernike theorem.
利用与金属氧化物金属隧道二极管探测器耦合的双偶极相控阵天线来测量部分相干单色光场的相干度。对于二元相控阵,相干度衡量的是天线接收到的电场相关性与元件间距的函数关系。为了从测量的天线响应中提取相干函数,开发了一种校准方法以消除传播损耗和器件不均匀性。在10.6 µm处的测量结果得到了电磁模拟的证实,并与根据范西特 - 泽尼克定理得出的结果进行了比较。