Modulation pattern calculation device, light control device, modulation pattern calculation method, modulation pattern calculation program, and storage medium

4:

• A light control apparatus comprising:
• the modulation pattern calculation apparatus according to claim 1;
• a light source configured to output the input light;
• a dispersive element configured to spectrally disperse the input light;
• the spatial light modulator configured to modulate at least one of an intensity spectrum and a phase spectrum of the input light after the dispersion and output modulated light;
• and
• an optical system configured to focus the modulated light, wherein
• the spatial light modulator is configured to present the modulation pattern calculated by the modulation pattern calculation apparatus.

5:

• A modulation pattern calculation method for calculating a modulation pattern presented on a spatial light modulator configured to modulate at least one of an intensity spectrum and a phase spectrum of input light to bring a temporal intensity waveform of light close to a desired waveform, the method comprising:
• a step of performing a Fourier transform on a waveform function in a frequency domain including an intensity spectrum function and a phase spectrum function;
• a step of performing a first replacement of a temporal intensity waveform function based on the desired waveform in a time domain after the Fourier transform and then performing an inverse Fourier transform;
• a step of performing a second replacement to constrain one spectrum function of the intensity spectrum function and the phase spectrum function in the frequency domain after the inverse Fourier transform;
• and
• a step of calculating the modulation pattern on the basis of the other spectrum function output in the step of performing the second replacement, wherein
• in the step of performing the inverse Fourier transform, the first replacement is performed using a result of multiplying a function representing the desired waveform by a coefficient, and
• the coefficient has a value in which a difference between the function after the multiplication and the temporal intensity waveform function after the Fourier transform is smaller than a difference before the multiplication of the coefficient.

8:

• A modulation pattern calculation program for causing a computer to calculate a modulation pattern presented on a spatial light modulator configured to modulate at least one of an intensity spectrum and a phase spectrum of input light to bring a temporal intensity waveform of light close to a desired waveform, the program causing the computer to execute:
• a step of performing a Fourier transform on a waveform function in a frequency domain including an intensity spectrum function and a phase spectrum function;
• a step of performing a first replacement of a temporal intensity waveform function based on the desired waveform in a time domain after the Fourier transform and then performing an inverse Fourier transform;
• a step of performing a second replacement to constrain one spectrum function of the intensity spectrum function and the phase spectrum function in the frequency domain after the inverse Fourier transform;
• and
• a step of calculating the modulation pattern on the basis of the other spectrum function output in the step of performing the second replacement, wherein
• in the step of performing the inverse Fourier transform, the first replacement is performed using a result of multiplying a function representing the desired waveform by a coefficient, and
• the coefficient has a value in which a difference between the function after the multiplication and the temporal intensity waveform function after the Fourier transform is smaller than a difference before the multiplication of the coefficient.