Andrade O O
Appl Opt. 1976 Nov 1;15(11):2800-3. doi: 10.1364/AO.15.002800.
When a freely propagating light beam passes through a limiting aperture into an interferometer a set of the interferometer modes is coupled even when the beam is matched to the interferometer. The incoming beam and the modes of the interferometer are assumed to be described by Gaussian Laguerre functions and the limiting aperture to be circular and on axis with the modes. The coupling coefficients are obtained for an arbitrary incoming mode and arbitrary expanding set. Simpler solutions are found for an incoming Gaussian beam by choosing the expanding set matched to the incoming beam parameters.
当一束自由传播的光束通过一个限制孔径进入干涉仪时，即使光束与干涉仪匹配，也会耦合一组干涉仪模式。假设入射光束和干涉仪模式由高斯拉盖尔函数描述，且限制孔径为圆形并与模式同轴。对于任意入射模式和任意扩展集，可得到耦合系数。通过选择与入射光束参数匹配的扩展集，可得到入射高斯光束的更简单解。
