Patent ID: 8183528
Filing Date: 2012-05-22
Classification: G01N

Abstract:
1. An electromagnetic wave measurement device, comprising: an electromagnetic wave output device that outputs an electromagnetic wave, at a frequency equal to or more than 0.01 THz and equal to or less than 100 THz, toward a device under test; an electromagnetic wave detector that detects the electromagnetic wave which has transmitted through the device under test; a relative position changer that changes a relative position of an intersection at which an optical path of the electromagnetic wave transmitting through the device under test and the device under test intersect, with respect to the device under test; a calculator that calculates, based on an electromagnetic wave detected by the electromagnetic wave detector, a phase in a frequency domain of the electromagnetic wave which has transmitted through the device under test; a sinogram generator that generates a sinogram based on a result calculated by the calculator; and an image generator that generates, based on the sinogram, an image of a cross section of the device under test including the intersection, the image generator comprising a group delay generator that generates, based on the result calculated by the calculator, a group delay in the frequency domain of the electromagnetic wave which has transmitted through the device under test, wherein the sinogram generator generates the sinogram for the group delay.