Abstract: Provided is a high contrast grating polarizer with adjustable polarization characteristics, relating to the technical field of photoelectric devices. The high contrast grating polarizer includes a transparent substrate; and a plasma metal antenna structure layer, a refractive index electrically-tunable switching layer, a first electrode layer, and a second electrode layer located on the transparent substrate, where the plasma metal antenna structure layer includes a high contrast grating and a plasma metal antenna structure interleaved with the high contrast grating, the high contrast grating includes a semiconductor grating or a dielectric grating, the high contrast grating is used for transmitting light in a first polarization direction, the plasma metal antenna structure is used for reflecting light in a second polarization direction, and the first polarization direction is opposite to the second polarization direction.

Abstract: The present disclosure provides a vertical cavity surface emitting laser, relating to the technical field of photoelectric devices. The vertical cavity surface emitting laser includes a substrate layer, a buffer layer, a first reflector layer, a light emitting layer, a polarization selective hybrid layer and an electrode layer that are stacked. The polarization selective hybrid layer includes a second reflector layer and a near wavelength grating layer integrated above the second reflector layer, where a period of a near wavelength grating is smaller than a wavelength of light in a propagating medium and larger than a wavelength of light in a semiconductor material of the vertical cavity surface emitting laser. The vertical cavity surface emitting laser can emit highly stable and highly polarized laser light, and is simple in structure and convenient to fabricate. The second reflector layer is thinner, which reduces the production cost.

Abstract: Provided is a high contrast grating polarizer, which relates to the technical field of photoelectric devices. The polarizer includes a substrate, a high contrast grating on the substrate and a plasmonic metal antenna structure interleaved with the high contrast grating, where the high contrast grating includes a semiconductor grating or a dielectric grating; and the high contrast grating is configured to transmit light of a first polarization direction, the plasmonic metal antenna structure is configured to reflect light of a second polarization direction, and the first polarization direction is opposite to the second polarization direction.

Abstract: A programmable structured light generator, a photoelectric device having same, and a manufacturing method. The structured light generator includes: a laser module, wherein the laser module includes a programmable controller and an individually addressable vertical cavity surface emitting laser array (VCSEL), and the programmable controller is used for controlling light spot position coding of the VCSEL array; a collimation module, disposed at a light source emitter of the VCSEL array, wherein the collimation module is used for collimating emergent light of the VCSEL array; and a metasurface module, disposed on an emitted light focal plane path, wherein the metasurface module is used for projecting a programmable structured light speckle dot matrix pattern in a far field.