| 摘要 |
<p>A transmitted light generated when a beam from a laser beam source (01) is applied to a specimen is combined with a laser beam from a local oscillation beam source (02) whose frequency is different from that of the applied laser beam through a half mirror (03), and the combined light is received by a light receiving element (04) that restricts each division area to not larger than a minimum space resolution unit where an interference between different points is generated when the propagation area of light is divided to generate a Fraunhofer diffraction image. The whole or part of the Fraunhofer diffraction image of the zero order, or a diffraction image up to n times the zero order spectrum are detected by a photodetector (05). Since the transmitted image can be separated from a scattering component and detected by extracting the beat component of the combined light, and information on an absorber can be obtained even when the scattering component is large such as with light passed through a specimen of an organism, etc., the application of this device to the optical CT, etc. becomes possible.</p> |
