Time response measurement apparatus and time response measurement method

A time response measurement apparatus for measuring a time response inside a sample caused by irradiation with light, the time response measurement apparatus comprising:

• a pulse shaper configured to generate first pulsed light including a wavelength of pump light, second pulsed light including a wavelength of probe light, and third pulsed light including the wavelength of the pump light and the wavelength of the probe light, on a common optical axis;
• an optical filter configured to transmit the first pulsed light, the second pulsed light, and the third pulsed light output from the sample arranged on the optical axis after being incident on the sample, an attenuation rate of the optical filter with respect to the wavelength of the pump light being larger than an attenuation rate of the optical filter with respect to the wavelength of the probe light;
• a waveform measurement unit including a photodetector and configured to measure a first temporal waveform that is a temporal waveform of the first pulsed light having passed through the optical filter, a second temporal waveform that is a temporal waveform of the second pulsed light having passed through the optical filter, and a third temporal waveform that is a temporal waveform of the third pulsed light having passed through the optical filter;
• and
• an analyzer configured to obtain the time response of the sample based on the first temporal waveform, the second temporal waveform, and the third temporal waveform.