Optical property measurement apparatus and optical property measurement method

An optical property measurement method for measuring optical properties of a measurement object by irradiating the measurement object with pulsed light, the optical property measurement method comprising:

• selecting any state in an optical system capable of switching between a first state and a second state, wherein in the first state, an optical filter is arranged on the optical path of the pulsed light output from the measurement object, and in the second state, the optical filter is not arranged on the optical path, and an attenuation rate of the optical filter with respect to one wavelength component constituting the pulsed light is larger than an attenuation rate of the optical filter with respect to another wavelength component constituting the pulsed light;
• irradiating the measurement object with the pulsed light having a temporal waveform according to a type of optical property to be measured using a pulse shaper capable of changing a temporal waveform of the pulsed light;
• measuring a temporal waveform of the pulsed light having passed through the optical system;
• and
• obtaining the optical property of the measurement object based on the temporal waveform measured by the measuring,
• wherein types of the optical properties include a time response inside the measurement object caused by light incidence and a wavelength dispersion amount of the measurement object, and
• wherein in the selecting, the first state is selected when the time response is measured, and the second state is selected when the wavelength dispersion amount is measured.