Dynamic computer-generated nonlinear-optical holograms in non-collinear second harmonic generation process

Nonlinear holography technique is a powerful tool for all-optical switching and manipulation of arbitrary harmonic wave. The common method of realizing such nonlinear holography is by configuring the structure of nonlinear photonic crystals. However, it is a challenge to dynamically tune the harmonic wave pattern. To overcome the long-term existed non-dynamic property of such nonlinear holographs, we realize dynamic computer-generated nonlinear-optical holograms in non-collinear second harmonic generation process, which only one infrared beam is modulated. Arbitrary patterns both in fundamental-frequency and second harmonic waveband can be generated at the same time. This work offers a flexible and dynamic method for arbitrary nonlinear wave-front shaping technology.