Patent ID: 9709497
Date: 2017-07-18
CPC Classifications: G01N

Claim:
1. A transient absorption measurement method comprising: providing a pump light source for repeatedly generating a pump light pulse; providing a probe light source for repeatedly generating a probe light pulse in a shorter repetition time interval than the pump light pulse, the probe light pulse having a delay time with respect to the pump light pulse shifting every time the pump light pulse is generated; providing a sample; repeatedly irradiating the pump light pulse on the sample by use of the pump light source; repeatedly irradiating the probe light pulse on the sample every time the pump pulse is irradiated; detecting an intensity of a probe light pulse having passed through the sample; measuring, every time the pump light pulse is irradiated, a shift in a delay time of the probe light pulse with respect to the pump light pulse occurring every time the pump light pulse is generated; and obtaining transient absorption measurement data of the sample based on detected data of the probe light pulse intensity obtained in higher time density than repetition time density of the probe light pulse and based on the shift in the delay time measured every time the pump light pulse is irradiated, wherein the pump light source and the probe light source are independent of each other and generate the pump light pulse and the probe light pulse in a manner asynchronous with each other.