Two-dimensional(2D)layered materials,with large second-order nonlinear susceptibility,are currently growing as an ideal candidate for fulflling tunable nanoscale coherent light through the second-order nonlinear optic...Two-dimensional(2D)layered materials,with large second-order nonlinear susceptibility,are currently growing as an ideal candidate for fulflling tunable nanoscale coherent light through the second-order nonlinear optical parametric processes.However,the atomic thickness of 2D layered materials leads to poor feld confnement and weak light-matter interaction at nanoscale,resulting in low nonlinear conversion efciency.Here,hybrid three-dimensional(3D)spiral WSe2 plasmonic structures are fabricated for highly efcient second harmonic generation(SHG)and sum-frequency generation(SFG)based on the enhanced light-matter interaction in hybrid plasmonic structures.Te 3D spiral WSe2,with AA lattice stacking,exhibits efcient SH radiation due to the constructive interference of nonlinear polarization between the neighboring atomic layers.Tus,extremely high external SHG conversion efciency(about 2.437×10−5)is achieved.Moreover,the ease of phase-matching condition combined with the enhanced light-matter interaction in hybrid plasmonic structure brings about efcient SHG and SFG simultaneously.Tese results would provide enlightenment for the construction of typical structures for efcient nonlinear processes.展开更多
CONSPECTUS:In the past decade,micro/nanoscale lasers have captured broad research interest for their feasibility in advancing the fields of photonics and optoelectronics.Owing to ease of spectral and chemical tuning,c...CONSPECTUS:In the past decade,micro/nanoscale lasers have captured broad research interest for their feasibility in advancing the fields of photonics and optoelectronics.Owing to ease of spectral and chemical tuning,convenient processing techniques,low threshold,and mechanical flexibilities,organic microlasers are promising candidates for novel devices that meet the developing trends of the field toward miniaturization,portability,and highly integration.To unleash the full potential for future integrated optoelectronics,organic microlaser arrays with specific functionalities and controllable alignment are on urgent demand.In recent years,ever-increasing efforts have been concentrated on the preparation and optoelectronic applications of organic microlaser arrays,which significantly expands the capabilities and improves the performance of organic microlasers.Therefore,it is of great importance to summarize this flourishing research area and give a deep understanding on the structure−function relationship and application-oriented fabrication strategies of organic microlaser arrays,which will be instructive for future development.In this Account,we systematically review recent progress in the field of organic microlaser arrays,with emphasis on the rational materials engineering as well as controlled patterning techniques toward integrated optoelectronic applications.Owing to excellent versatility and compatibility,organic materials are beneficial for the construction of microlasers with specific properties,such as tunable wavelength,switchable output among several wavelengths,and controllable lasing mode,which are of great significance to reliable applications in the field of information.A series of patterning techniques,including inkjet printing,template-assisted patterning,screen printing,and so on,have been applied to such functionalized organic microlasers to realize array configuration of multifunctionality and large-scale integration.The novel applications of the organic microlaser arrays are also presented,in particular,for photonic circuits,laser displays,and information encryption.Finally,future perspectives and challenges for assembled organic microlasers and arrays toward practical applications are provided to give an outlook of this emerging field.We anticipate that this Account will promote the development of organic microlasers with desired performance toward robust integrated optoelectronic applications.展开更多
基金Tis work was supported fnancially by the Ministry of Science and Technology of China[Grant Nos.2017YFA0204502 and 2015CB932404]the National Natural Science Foundation of China[Grant Nos.21773265,21533013,and 21790364]and the Youth Innovation Promotion Association CAS[2014028].
文摘Two-dimensional(2D)layered materials,with large second-order nonlinear susceptibility,are currently growing as an ideal candidate for fulflling tunable nanoscale coherent light through the second-order nonlinear optical parametric processes.However,the atomic thickness of 2D layered materials leads to poor feld confnement and weak light-matter interaction at nanoscale,resulting in low nonlinear conversion efciency.Here,hybrid three-dimensional(3D)spiral WSe2 plasmonic structures are fabricated for highly efcient second harmonic generation(SHG)and sum-frequency generation(SFG)based on the enhanced light-matter interaction in hybrid plasmonic structures.Te 3D spiral WSe2,with AA lattice stacking,exhibits efcient SH radiation due to the constructive interference of nonlinear polarization between the neighboring atomic layers.Tus,extremely high external SHG conversion efciency(about 2.437×10−5)is achieved.Moreover,the ease of phase-matching condition combined with the enhanced light-matter interaction in hybrid plasmonic structure brings about efcient SHG and SFG simultaneously.Tese results would provide enlightenment for the construction of typical structures for efcient nonlinear processes.
基金supported financially by the Ministry of Science and Technology of China(Grant Nos.2017YFA0204502 and 2018YFA0704802)the National Natural Science Foundation of China(Grant Nos.21922307,22090023 and 21790364)Beijing Natural Science Foundation(JQ20006).
文摘CONSPECTUS:In the past decade,micro/nanoscale lasers have captured broad research interest for their feasibility in advancing the fields of photonics and optoelectronics.Owing to ease of spectral and chemical tuning,convenient processing techniques,low threshold,and mechanical flexibilities,organic microlasers are promising candidates for novel devices that meet the developing trends of the field toward miniaturization,portability,and highly integration.To unleash the full potential for future integrated optoelectronics,organic microlaser arrays with specific functionalities and controllable alignment are on urgent demand.In recent years,ever-increasing efforts have been concentrated on the preparation and optoelectronic applications of organic microlaser arrays,which significantly expands the capabilities and improves the performance of organic microlasers.Therefore,it is of great importance to summarize this flourishing research area and give a deep understanding on the structure−function relationship and application-oriented fabrication strategies of organic microlaser arrays,which will be instructive for future development.In this Account,we systematically review recent progress in the field of organic microlaser arrays,with emphasis on the rational materials engineering as well as controlled patterning techniques toward integrated optoelectronic applications.Owing to excellent versatility and compatibility,organic materials are beneficial for the construction of microlasers with specific properties,such as tunable wavelength,switchable output among several wavelengths,and controllable lasing mode,which are of great significance to reliable applications in the field of information.A series of patterning techniques,including inkjet printing,template-assisted patterning,screen printing,and so on,have been applied to such functionalized organic microlasers to realize array configuration of multifunctionality and large-scale integration.The novel applications of the organic microlaser arrays are also presented,in particular,for photonic circuits,laser displays,and information encryption.Finally,future perspectives and challenges for assembled organic microlasers and arrays toward practical applications are provided to give an outlook of this emerging field.We anticipate that this Account will promote the development of organic microlasers with desired performance toward robust integrated optoelectronic applications.
