Semiconductor optoelectronics devices,capable of converting electrical power into light or conversely light into electrical power in a compact and highly efficient manner represent one of the most advanced technologie...Semiconductor optoelectronics devices,capable of converting electrical power into light or conversely light into electrical power in a compact and highly efficient manner represent one of the most advanced technologies ever developed,which has profoundly reshaped the modern life with a wide range of applications.In recent decades,semiconductor technology has rapidly evolved from first-generation narrow bandgap materials(Si,Ge)to the latest fourth-generation ultra-wide bandgap semiconductor(GaO,diamond,AlN)with enhanced performance to meet growing demands.Additionally,merging semiconductor devices with other techniques,such as computer assisted design,state-of-the-art micro/nano fabrications,novel epitaxial growth,have significantly accelerated the development of semiconductor optoelectronics devices.Among them,integrating metasurfaces with semiconductor optoelectronic devices have opened new frontiers for on-chip control of their electromagnetic response,providing access to previously inaccessible degrees of freedom.We review the recent advances in on-chip control of a variety of semiconductor optoelectronic devices using integrated metasurfaces,including semiconductor lasers,semiconductor light emitting devices,semiconductor photodetectors,and low dimensional semiconductors.The integration of metasurfaces with semiconductors offers wafer-level ultracompact solutions for manipulating the functionalities of semiconductor devices,while also providing a practical platform for implementing cuttingedge metasurface technology in real-world applications.展开更多
We propose an efficient method of generating a vortex beam with multi-foci by using a fractal spiral zone plate(FSZP), which is designed by combining fractal structure with a spiral zone plate(SZP) in the squared radi...We propose an efficient method of generating a vortex beam with multi-foci by using a fractal spiral zone plate(FSZP), which is designed by combining fractal structure with a spiral zone plate(SZP) in the squared radial coordinate.The theoretical analysis reveals that the number of foci that embed vortices is significantly increased as compared with that obtained by using a conventional SZP. Furthermore, the influence of topological charge on the intensity distribution in focal plane is also discussed in detail. For experimental investigation, an FSZP with topological charge p = 1 and 6.4 mm diameter is fabricated by using a photo-etching technique. The calibration indicates that the focusing performances of such a kind of zone plane(ZP) accord well with simulations, thereby providing its potential applications in multi-dimensional optical manipulation and optical imaging technology.展开更多
Imaging in the solar blind ultraviolet(UV)region offers significant advantages,including minimal interference from sunlight,reduced background noise,low false-alarm rate,and high sensitivity,and thus has important app...Imaging in the solar blind ultraviolet(UV)region offers significant advantages,including minimal interference from sunlight,reduced background noise,low false-alarm rate,and high sensitivity,and thus has important applications in early warning or detection of fire,ozone depletion,dynamite explosions,missile launches,electric leakage,etc.However,traditional imaging systems in this spectrum are often hindered by the bulkiness and complexity of conventional optics,resulting in heavy and cumbersome setups.The advent of metasurfaces,which use a two-dimensional array of nano-antennas to manipulate light properties,provides a powerful solution for developing miniaturized and compact optical systems.In this study,diamond metalenses were designed and fabricated to enable ultracompact solar-blind UV imaging.To prove this concept,two representative functionalities,bright-field imaging and spiral phase contrast imaging,were demonstrated as examples.Leveraging diamond's exceptional properties,such as its wide bandgap,high refractive index,remarkable chemical inertness,and high damage threshold,this work not only presents a simple and feasible approach to realize solar-blind imaging in an ultracompact form but also highlights diamond as a highly capable material for developing miniaturized,lightweight,and robust imaging systems.展开更多
基金supported by the National Natural Science Foundation of China(62374150)Natural Science Foundation of Henan(242300421216)+3 种基金C.Zheng acknowledges the support of China Postdoctoral Science Foundation(Grant No.2023TQ0296)the Postdoctoral Fellowship Program of CPSF(Grant No.GZC20232389)Y.Xie acknowledges the support of National Natural Science Foundation of China(62074011,62134008)Beijing Outstanding Young Scientist Program(JWZQ20240102009).
文摘Semiconductor optoelectronics devices,capable of converting electrical power into light or conversely light into electrical power in a compact and highly efficient manner represent one of the most advanced technologies ever developed,which has profoundly reshaped the modern life with a wide range of applications.In recent decades,semiconductor technology has rapidly evolved from first-generation narrow bandgap materials(Si,Ge)to the latest fourth-generation ultra-wide bandgap semiconductor(GaO,diamond,AlN)with enhanced performance to meet growing demands.Additionally,merging semiconductor devices with other techniques,such as computer assisted design,state-of-the-art micro/nano fabrications,novel epitaxial growth,have significantly accelerated the development of semiconductor optoelectronics devices.Among them,integrating metasurfaces with semiconductor optoelectronic devices have opened new frontiers for on-chip control of their electromagnetic response,providing access to previously inaccessible degrees of freedom.We review the recent advances in on-chip control of a variety of semiconductor optoelectronic devices using integrated metasurfaces,including semiconductor lasers,semiconductor light emitting devices,semiconductor photodetectors,and low dimensional semiconductors.The integration of metasurfaces with semiconductors offers wafer-level ultracompact solutions for manipulating the functionalities of semiconductor devices,while also providing a practical platform for implementing cuttingedge metasurface technology in real-world applications.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11404290 and 61505178)the Major National Scientific Instruments Developing Special Project(Grant No.2012YQ130125)+2 种基金the Postdoctoral Science Foundation of Henan Province,China(Grant No.2013008)the Program for Science&Technology Innovation Talents in Universities of Henan Province,China(Grant No.172102210481)the Key Scientific Research Projects in Universities of Henan Province,China(Grant No.19B140005)
文摘We propose an efficient method of generating a vortex beam with multi-foci by using a fractal spiral zone plate(FSZP), which is designed by combining fractal structure with a spiral zone plate(SZP) in the squared radial coordinate.The theoretical analysis reveals that the number of foci that embed vortices is significantly increased as compared with that obtained by using a conventional SZP. Furthermore, the influence of topological charge on the intensity distribution in focal plane is also discussed in detail. For experimental investigation, an FSZP with topological charge p = 1 and 6.4 mm diameter is fabricated by using a photo-etching technique. The calibration indicates that the focusing performances of such a kind of zone plane(ZP) accord well with simulations, thereby providing its potential applications in multi-dimensional optical manipulation and optical imaging technology.
基金National Key Research and Development Program of China(2022YFB3608604)National Natural Science Foundation of China(U21A2070,62374150,62074011,(62134008,62474165)+2 种基金Natural Science FoundationofHenan(242300421216)Science and Technology Major Project of Henan Province(231100230300)Beijing Nova Program(Z201100006820096).
文摘Imaging in the solar blind ultraviolet(UV)region offers significant advantages,including minimal interference from sunlight,reduced background noise,low false-alarm rate,and high sensitivity,and thus has important applications in early warning or detection of fire,ozone depletion,dynamite explosions,missile launches,electric leakage,etc.However,traditional imaging systems in this spectrum are often hindered by the bulkiness and complexity of conventional optics,resulting in heavy and cumbersome setups.The advent of metasurfaces,which use a two-dimensional array of nano-antennas to manipulate light properties,provides a powerful solution for developing miniaturized and compact optical systems.In this study,diamond metalenses were designed and fabricated to enable ultracompact solar-blind UV imaging.To prove this concept,two representative functionalities,bright-field imaging and spiral phase contrast imaging,were demonstrated as examples.Leveraging diamond's exceptional properties,such as its wide bandgap,high refractive index,remarkable chemical inertness,and high damage threshold,this work not only presents a simple and feasible approach to realize solar-blind imaging in an ultracompact form but also highlights diamond as a highly capable material for developing miniaturized,lightweight,and robust imaging systems.
