HNU Undergraduates Published Paper on Optics Letters

Undergraduate students He Yongli and Liu Zhenxing from School of Physics and Electronics of Hunan University recently published their paper “Higher-order laser mode converters with dielectric metasurfaces” on world-leading academic journal Optics Letters. 

As mentioned in the paper, a simple and compact converter based on the dielectric metasurface is proposed for the transformation of Gaussian mode to Hermite–Gaussian and Laguerre–Gaussian modes. They established the relationship between the phase of a desired mode and the local orientation of the optical axis based on the evolution of Pancharatnam–Berry phase on Poincaré sphere. By controlling the local orientation of the optical axis in the dielectric metasurface, they can achieve any desired higher-order laser mode.