A history and a glimpse into the future of spaser(acronym for"surface plasmon amplification by stimulated emission of radiation")is provided.The spaser(also called a plasmonic nanolaser)is an active nanosyst...A history and a glimpse into the future of spaser(acronym for"surface plasmon amplification by stimulated emission of radiation")is provided.The spaser(also called a plasmonic nanolaser)is an active nanosystem including a gain medium and a nanoplasmonic metal core.It generates coherent intense nanolocalized fields.Theoretically predicted in 2003 by Bergman and Stockman,the spaser grew into a large fundamental research and application field with thousands of publications.We review a few of them to illustrate the most important and general fundamental properties of the spaser.We also review some selected applications of spasers,in particular,to ultrasensing and biomedical problems,concentrating on cancer-cell theranostics(therapeutics and diagnostics).In conclusion,we attempt to glimpse into the future by predicting that the next big development of the spasers will be topological nano-optics,and its"killer"application will be ultrafast,high-density on-chip communications for future information processing.展开更多
We propose a novel nanospaser that operates in the mid-infrared region and utilizes a nanopatch of graphene as its plasmonic core and a quantum-well cascade as its gain medium.This design takes advantage of the low op...We propose a novel nanospaser that operates in the mid-infrared region and utilizes a nanopatch of graphene as its plasmonic core and a quantum-well cascade as its gain medium.This design takes advantage of the low optical losses in graphene resulting from its high electron mobility.The proposed quantum cascade graphene spaser generates optical fields with unprecedentedly high nanolocalization,which is characteristic of graphene plasmons.This spaser will be an efficient nanosource of intense and coherent hot-spot fields in the mid-infrared spectral region with potential widespread applications in mid-infrared nanoscopy,nanospectroscopy,nanolithography,and optoelectronic information processing.展开更多
Comprehensive Summary SPASER nanoparticle(NP),with small size,ultranarrow spectral-line and good biocompatibility,is a potential biomedical nanoprobe.However,owning to the striking light absorption capacity of Au-reso...Comprehensive Summary SPASER nanoparticle(NP),with small size,ultranarrow spectral-line and good biocompatibility,is a potential biomedical nanoprobe.However,owning to the striking light absorption capacity of Au-resonator,huge energy could accumulate under strong pumping-laser,which would lead to poor photo-stability and unexpected photo-damage to SPASER NP,and is harmful to its future practical application but hasn't been systematically studied in experiment.展开更多
基金The National Natural Science Foundation of China(Nos.61275153,61320106014)the Open Fund of Key Subject of Physics,Zhejiang Province(Nos.xkzwl12,xkzwl1521)the K.C.Wong Magna Fund of Ningbo University,China
文摘A history and a glimpse into the future of spaser(acronym for"surface plasmon amplification by stimulated emission of radiation")is provided.The spaser(also called a plasmonic nanolaser)is an active nanosystem including a gain medium and a nanoplasmonic metal core.It generates coherent intense nanolocalized fields.Theoretically predicted in 2003 by Bergman and Stockman,the spaser grew into a large fundamental research and application field with thousands of publications.We review a few of them to illustrate the most important and general fundamental properties of the spaser.We also review some selected applications of spasers,in particular,to ultrasensing and biomedical problems,concentrating on cancer-cell theranostics(therapeutics and diagnostics).In conclusion,we attempt to glimpse into the future by predicting that the next big development of the spasers will be topological nano-optics,and its"killer"application will be ultrafast,high-density on-chip communications for future information processing.
基金VA’s work was supported by NSF grant No.ECCS-1308473.For MIS’s work,the primary support was provided by MURI grant No.N00014-13-1-0649 from the US Office of Naval Research+2 种基金additional support was provided by grant No.DE-FG02-11ER46789 from the Materials Sciences and Engineering DivisionOffice of Basic Energy Sciences,Office of Science,US Department of Energy,by grant No.DE-FG02-01ER15213 from the Chemical Sciences,Biosciences and Geosciences Division,Office of the Basic Energy Sciences,Office of Science,US Department of Energy,and by NSF grant No.ECCS-1308473.MIS also gratefully acknowledges support from the Max Planck Society and from the Deutsche Forschungsgemeinschaft Cluster of Excellence:Munich Center for Advanced Photonics(http://www.munichphotonics.de)during his sabbaticals in Munich.
文摘We propose a novel nanospaser that operates in the mid-infrared region and utilizes a nanopatch of graphene as its plasmonic core and a quantum-well cascade as its gain medium.This design takes advantage of the low optical losses in graphene resulting from its high electron mobility.The proposed quantum cascade graphene spaser generates optical fields with unprecedentedly high nanolocalization,which is characteristic of graphene plasmons.This spaser will be an efficient nanosource of intense and coherent hot-spot fields in the mid-infrared spectral region with potential widespread applications in mid-infrared nanoscopy,nanospectroscopy,nanolithography,and optoelectronic information processing.
基金mainly supported by the National Natural Science Foundation of China(Nos.22174064,22034003)the Excellent Research Program of Nanjing University(No.ZYJH004)+1 种基金the State Key Laboratory of Analytical Chemistry for Life Science(No.5431ZZXM2002)the Program B for Outstanding Ph.D.
文摘Comprehensive Summary SPASER nanoparticle(NP),with small size,ultranarrow spectral-line and good biocompatibility,is a potential biomedical nanoprobe.However,owning to the striking light absorption capacity of Au-resonator,huge energy could accumulate under strong pumping-laser,which would lead to poor photo-stability and unexpected photo-damage to SPASER NP,and is harmful to its future practical application but hasn't been systematically studied in experiment.
