SPATIAL OPTICAL MODULATOR AND OPTICAL PULSE WAVEFORM CONTROL DEVICE

摘要

A chirp compensation dielectric multi-layer film mirror (10) has group delay characteristics that reflect an incident light in a specified wavelength region and prevents at least one of the dielectric multi-layer film mirror (10) and a light transmission unit within the specified wavelength region from giving a phase disturbance to an incident light. Therefore, all the wavelength components of an incident light in a specified wavelength region are reflected by the mirror (10), and no excessive phase disturbance is caused by the mirror (10) and the light transmission unit. Accordingly, a spatial optical modulator (1) enables a desired modulation only by a liquid crystal layer without giving an excessive phase disturbance to an outgoing light.