TWO-DIMENSIONAL SPECTROSCOPIC MEASUREMENT METHOD AND TWO-DIMENSIONAL SPECTROSCOPIC MEASUREMENT DEVICE

摘要

In this two-dimensional spectroscopic measurement method, a first optical frequency comb in which a repetition frequency is four times an offset frequency is generated, the first optical frequency comb is divided into second to fifth optical frequency combs, and the phases of the fourth optical frequency comb and the fifth optical frequency comb on a time axis are offset from each other by 90°. In the two-dimensional spectroscopic measurement method, the envelope strength of the following is acquired: an interference signal of the third and fourth optical frequency combs in which either of said optical frequency combs includes optical information regarding a sample; and an interference signal of the third and fifth optical frequency combs in which either of said optical frequency combs includes optical information regarding a sample. The optical information regarding the sample is then extracted on the basis of the envelope strength.