Photon noise in photometric instruments at far-infrared and submillimeter wavelengths.
Photon noise in photometric instruments at far-infrared and submillimeter wavelengths.
复制标题
远红外和亚毫米波长光度仪器中的光子噪声。
作者：
J. Lamarre
光度仪器中的光子噪声是使用两种不同的方法计算的。第一个表达式源自量子物理学，对应于最广泛使用的公式，并且适用于衍射现象可以忽略不计的情况。第二个源自汉伯里·布朗和特威斯的半古典方法。推导并讨论了该表达式的属性，包括与前一个表达式的一致性、渐近行为和尺度属性。研究了偏振的影响，并给出了实际例子。
Photon noise in photometric instruments is computed using two different methods. A first expression, derived from quantum physics, corresponds to the most widely used formulas and is applicable when diffraction phenomena are negligible. The second one is derived from the semiclassical approach of Hanbury Brown and Twiss. Properties of this expression, including consistency with the former one, asymptotical behavior, and scale properties are derived and discussed. The effect of polarization is studied, and practical examples are given.