Nonlinear wavefront shaping with optically induced three-dimensional nonlinear photonic crystals

Abstract

Generation of coherent light with desirable amplitude and phase profiles throughout the optical spectrum is a key issue in optical technologies. Nonlinear wavefront shaping offers an exceptional way to achieve this goal by converting an incident light beam into the beam (or beams) of different frequency with spatially modulated amplitude and phase. The realization of such frequency conversion and shaping processes critically depends on the matching of phase velocities of interacting waves, for which nonlinear photonic crystals (NPCs) with spatially modulated quadratic nonlinearity have shown great potential. Here, we present the first experimental demonstration of nonlinear wavefront shaping with three-dimensional (3D) NPCs formed by ultrafast-light-induced ferroelectric domain inversion approach. Compared with those previously used low-dimensional structures, 3D NPCs provide all spatial degrees of freedom for the compensation of phase mismatch in nonlinear interactions and thereby constitute an unprecedented system for the generation and control of coherent light at new frequencies.

Nonlinear Volume Holography in 3D Nonlinear Photonic Crystals

“…To this end we employed laser induced ferroelectric domain inversion process. [ 36–40 ] By illuminating the Z cut sample with tightly focused femtosecond beam, and scanning it in 3D, we created 3D pattern of inverted domains, which replicated the designed 3D pattern shown in Figure 3b (see Experimental Section for details). The fabricated volume holographic structure visualized via the Čerenkov second harmonic microscopy, [ 44 ] is shown in Figure 3c.…”

“…[36][37][38] Subsequently, the technique enabled experimental demonstration of fully 3D nonlinear crystal as well as nonlinear wave-front shaping in nonphase matched harmonic generations. [39,40] In this work, we employ the laser-induced ferroelectric domain reversal to form 3D nonlinear photonic crystal and demonstrate its use in nonlinear volume holography. While the concept of nonlinear holograms has been proposed several years ago, and demonstrated in the context of 2D structures, the experimental demonstration of fully 3D volume nonlinear holograms has never been reported.…”

“…[ 36–38 ] Subsequently, the technique enabled experimental demonstration of fully 3D nonlinear crystal as well as nonlinear wave‐front shaping in nonphase matched harmonic generations. [ 39,40 ]…”

Design A Sensor Mach Zender Interferometer for the Detection of Chemical and Organic Substances Present In Food and Health Drinks

“…It can be used in public health to spoil different kind of disease, such as mosquitoes. For human body Pesticides are potentially toxic [1]. In soft drinks, bottled water, and food, pesticides are found.…”

Constraint-free wavelength conversion supported by giant optical refraction in a 3D perovskite supercrystal

“…These constraints can be overcome in engineered ferroelectric crystals with a full three-dimensional (3D) periodic spontaneous polarization distribution through quasi-phase-matching [8][9][10][11][12] and Cherenkov phase-matching [13][14][15][16][17][18][19][20] . 3D lattices of spontantabfigeous polarization also occur naturally in nanodisordered ferroelectrics in the form of supercrystals 21 , in which case the highly ordered domain mosaic also leads to giant broadband optical refraction 22 .…”