Provided are a measuring device and a measuring method that use terahertz light, by which a substance to be detected can be detected with high sensitivity and high accuracy. A measuring device using a pulsed electromagnetic wave is provided with a substance detection plate, a means for generating the pulsed electromagnetic wave having amplitude intensity dependent on the amount of a substance to be detected at an irradiation position by irradiating the substance detection plate with a pulsed laser beam, and a detection means for detecting the amplitude intensity of the pulsed electromagnetic wave, and measures the change of the state of a solution containing the substance to be detected on the basis of the amplitude intensity. Said measuring device is provided with a first beam splitter which divides the pulsed laser beam into two, a detection region part into which the solution containing the substance to be detected can be introduced, and a reference region part into which a reference solution can be introduced, irradiates a semiconductor corresponding to the detection region part and a semiconductor corresponding to the reference region respectively with the two divided pulsed laser beams, collects pulsed electromagnetic waves generated from the semiconductors corresponding to the detection region part and the reference region part, and detects the collected pulsed electromagnetic waves by said one detection means.
|IPC||G01N 21/ 35 A I|
|Publication status||Published - Aug 11 2011|