Photo Frequency Alteration Value Measuring Method using Photoacoustic Effects

摘要

The present invention provides two optical feedback to the laser light having the original frequency and frequency difference into the laser resonator an optical frequency shift amount measuring method using a photoacoustic effect to measure a frequency difference between the frequency is started. ; method in the present invention can measure the frequency shift amount, regardless of the noise generated during the laser discharge as well as providing, by means of a laser generator to the detector itself can be reduced in a long life, and which can make the structure simple and reduce the manufacturing cost. To this end, the present invention is the case of changing the laser light appears as a phenomenon inherent frequencies measured blood enters the reaction water was irradiated with a laser beam to be measured in the water, to be measured reflected by the water and scattering the laser light having the changed frequency is out and the light source by feedback from the laser resonator to a photoacoustic effect generated corresponding to the frequency difference between the two optical frequencies, this optical frequency shift amount using the photoacoustic effect hayeoseo to sense the acoustic sensing means is attached to one side of the laser resonator proposes a measuring method. ; Accordingly, the present invention is able to accurately determine the frequency shift amount, it is possible to minimize the frequency shift amount detecting means in the structure in which the economic benefits the zone effect There is.