Ama-photonics e-Micro-nano afunda kakhulu umthetho wokuxhumana phakathi kokukhanya nezinto eziku-micro kanye ne-nano kanye nokusetshenziswa kwawo ekukhiqizeni ukukhanya, ukudlulisa, ukulawula, ukuthola kanye nokuzwa. Amadivayisi e-micro-nano photonics angaphansi kwe-wavelength angathuthukisa ngempumelelo izinga lokuhlanganiswa kwe-photon, futhi kulindeleke ukuthi ahlanganise amadivayisi e-photonic ku-chip encane ye-optical njengama-chip kagesi. Ama-plasmonics e-Nano-surface yinkambu entsha yama-photonics e-micro-nano, afunda kakhulu ukusebenzisana phakathi kokukhanya nezinto eziku-nanostructures zensimbi. Inezici zobukhulu obuncane, isivinini esikhulu kanye nokunqoba umkhawulo wendabuko we-diffraction. Isakhiwo se-Nanoplasma-waveguide, esinezici ezinhle zokuthuthukisa insimu yendawo kanye nokuhlunga kwe-resonance, siyisisekelo se-nano-filter, i-wavelength division multiplexer, i-optical switch, i-laser kanye namanye amadivayisi e-micro-nano optical. Ama-microcavity e-Optical avimba ukukhanya ezindaweni ezincane futhi athuthukisa kakhulu ukusebenzisana phakathi kokukhanya nezinto eziku-. Ngakho-ke, i-microcavity e-optical ene-high quality factor iyindlela ebalulekile yokuzwa nokubona ukuzwela okuphezulu.
I-WGM microcavity
Eminyakeni yamuva nje, i-optical microcavity idonsele ukunaka okukhulu ngenxa yamandla ayo amakhulu okusebenza kanye nokubaluleka kwesayensi. I-optical microcavity ikakhulukazi iqukethe i-microsphere, i-microcolumn, i-microring kanye nezinye i-geometries. Luhlobo lwe-morphologic dependent optical resonator. Amagagasi okukhanya kuma-microcavities abonakala ngokugcwele esibonakalayo se-microcavity, okuholela kwimodi ye-resonance ebizwa ngokuthi i-whispering gallery mode (WGM). Uma kuqhathaniswa namanye ama-optical resonators, ama-microresonators anezici ze-Q value ephezulu (engaphezu kuka-106), ivolumu yemodi ephansi, usayizi omncane kanye nokuhlanganiswa okulula, njll., futhi asetshenziswe ekuzweleni kwe-biochemical okuzwela kakhulu, i-ultra-low threshold laser kanye nesenzo esingeyona i-linear. Umgomo wethu wocwaningo ukuthola nokufunda izici zezakhiwo ezahlukene kanye nezinhlobo ezahlukene zama-microcavities, nokusebenzisa lezi zici ezintsha. Iziqondiso eziyinhloko zocwaningo zifaka: ucwaningo lwezici ze-optical ze-WGM microcavity, ucwaningo lokwenziwa kwe-microcavity, ucwaningo lokusetshenziswa kwe-microcavity, njll.
Ukuzwa kwamakhemikhali kwe-WGM microcavity
Kulolu cwaningo, imodi ye-WGM ene-oda eliphezulu ene-oda eliphezulu ene-M1 (Umfanekiso 1(a)) yasetshenziswa ekulinganisweni kokuzwa. Uma kuqhathaniswa nemodi ye-oda eliphansi, ukuzwela kwemodi ye-oda eliphezulu kwathuthukiswa kakhulu (Umfanekiso 1(b)).
Umfanekiso 1. Imodi ye-Resonance (a) ye-microcapillary cavity kanye nokuzwela kwayo kwe-refractive index okuhambisanayo (b)
Isihlungi se-optical esilungisekayo esinenani eliphezulu le-Q
Okokuqala, i-microcavity ye-cylindrical eshintsha kancane kancane iyakhishwa, bese kuthi ukulungiswa kwe-wavelength kungafinyelelwa ngokuhambisa ngomshini indawo yokuxhumanisa ngokusekelwe kusimiso sobukhulu besimo kusukela ku-wavelength ye-resonant (Isithombe 2 (a)). Ukusebenza okulungisekayo kanye ne-bandwidth yokuhlunga kuboniswe ku-Isithombe 2 (b) kanye no-(c). Ngaphezu kwalokho, idivayisi ingafinyelela ukuzwa kokuhamba kwe-optical ngokunemba kwe-sub-nanometer.
Umfanekiso 2. Umdwebo weskimu wesihlungi se-optical esilungisekayo (a), ukusebenza okulungisekayo (b) kanye ne-bandwidth yesihlungi (c)
I-resonator ye-WGM microfluidic drop
ku-chip ye-microfluidic, ikakhulukazi i-droplet emafutheni (i-droplet emafutheni), ngenxa yezici zokucindezeleka kobuso, ngobubanzi obungamashumi noma ngisho namakhulu ama-micron, izolenga emafutheni, yakhe i-sphere ecishe ibe ephelele. Ngokusebenzisa kahle i-refractive index, i-droplet ngokwayo iyi-resonator eyindilinga ephelele ene-quality factor engaphezu kuka-108. Iphinde igweme inkinga yokuhwamuka emafutheni. Kuma-droplet amakhulu, azohlala “ezindongeni ezingenhla noma ezingezansi ngenxa yokwehluka kobuningi. Lolu hlobo lwe-droplet lungasebenzisa kuphela imodi yokuvuselela eceleni.
Isikhathi sokuthunyelwe: Okthoba-23-2023