Abstract
Nonlinear multiplexing holography emerges as a powerful tool to produce structured lights at new wavelengths. In this work, we propose and experimentally demonstrate an angle-multiplexing nonlinear holography in an angular noncritical phase-matching configuration. In experiment, various types of structured light beams, such as vortex beam, Airy beam and Airy vortex beam, are simultaneously output at second-harmonic waves along different paths. Because of the large angular acceptance bandwidth of noncritical phase-matching, one can achieve high conversion efficiency of angle-multiplexing nonlinear holography. Our method has potentially applications in high-capacity holographic storage and security encryption.
Highlights
Structured light has attracted widespread attentions because of its spatial distributions of amplitude, phase, and polarization [1]
Only one wavefront channel can be output at a time when the corresponding phase matching condition is satisfied in nonlinear holography
We propose and experimentally demonstrate an angle-multiplexing nonlinear holography in an angular noncritical phase-matching (A-NCPM) configuration
Summary
Structured light has attracted widespread attentions because of its spatial distributions of amplitude, phase, and polarization [1]. Because of its powerful wavefront shaping capability, holography has recently been used in nonlinear optics to enable the generations of various structured light beams at new optical frequencies [27,28,29,30,31,32,33,34]. Only one wavefront channel can be output at a time when the corresponding phase matching condition is satisfied in nonlinear holography. It is still difficult for nonlinear holography to output various types of structured light beams efficiently, controllably, and simultaneously. We use the angle-multiplexing nonlinear holography to generate vortex beam, Airy beam and Airy vortex beam at SH waves for example
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