| 摘要 |
<p>The invention relates to the studies of internal structures of objects with the aid of optical means. According to one variant of the inventive method and interferometer for carrying out said method, the optical beam path for low-coherent radiation directed towards the studied object (8) is embodied in such a way that it is bi-directional, the optical beam path for reference low-coherent radiation being embodied such that it is uni-directional. According to another variant of said method and interferometer, the reference optical beam path is embodied in the form of a loop (23). A part of said reference radiation travels along the beam path in a clockwise direction, the other part thereof travelling along said beam path in a conterclockwise direction. In the second variant, splitting factors can be optimised by embodying optical splitters (21) and (24) in such away that they are nonreciprocal or polarisation-dependent and by introducing polarisation-modifying elements between said splitters (21) and (24) and / or into a measuring arm and reference arms. The inventive variants of the method and interferometers for studying an object ensure the independence of the splitting and mixing radiation factors, thereby making it possible to control the power of a radiation source. Said splitting and mixing factors can be defined with respect to the best signal/noise relationship at the specified power of a radiation source.</p> |
