Micro-nano photonics inonyanya kudzidza mutemo wekudyidzana pakati pechiedza uye nyaya padiki uye nano chiyero uye mashandisiro ayo muchizvarwa chechiedza, kutapurirana, kudzora, kuona uye kunzwa. Micro-nano photonics sub-wavelength zvishandiso zvinogona kunyatso kuvandudza dhigirii rekubatanidza photon, uye inotarisirwa kubatanidza mafotonic zvishandiso mudiki diki optical chip semagetsi machipisi. Nano-surface plasmonics inzvimbo nyowani yemicro-nano photonics, iyo inonyanya kudzidza kudyidzana pakati pechiedza uye nyaya musimbi nanostructures. Iyo ine maitiro ehukuru hudiki, kukurumidza kukurumidza uye kukunda iyo yechinyakare diffraction muganho. Nanoplasma-waveguide chimiro, ine yakanaka yenzvimbo yekusimudzira munda uye resonance kusefa maitiro, ndiyo hwaro hwenano-sefa, wavelength division multiplexer, optical switch, laser uye mamwe ma micro-nano optical zvishandiso. Optical microcavities inovharira mwenje kumatunhu madiki uye inosimudzira zvakanyanya kusangana pakati pechiedza uye nyaya. Naizvozvo, iyo optical microcavity ine yemhando yepamusoro chinhu inzira yakakosha yekunzwa yakanyanya kunzwa uye kuona.
WGM microcavity
Mumakore achangopfuura, optical microcavity yakakwezva kutarisisa nekuda kwehukuru hwayo hwekushandisa uye kukosha kwesainzi. Iyo optical microcavity inonyanya kuve ine microsphere, microcolumn, microring uye mamwe ma geometries. Iyo imhando ye morphologic inotsamira optical resonator. Mafungu emwenje mumamicrocavities anoratidzwa zvizere paiyo microcavity interface, zvichikonzera resonance modhi inonzi whispering gallery mode (WGM). Kuenzaniswa nemamwe maoptical resonators, ma microresonator ane hunhu hwepamusoro Q kukosha (kupfuura 106), yakaderera modhi vhoriyamu, diki diki uye nyore kubatanidzwa, nezvimwewo, uye yakashandiswa kune yakakwira-sensitivity biochemical sensing, ultra-low threshold laser uye nonlinear chiito. Chinangwa chedu chekutsvagisa ndechekutsvaga uye kudzidza maitiro ezvimiro zvakasiyana uye akasiyana morphologies e microcavities, uye kushandisa aya maitiro matsva. Iwo makuru ekutsvaga nzira anosanganisira: optical maitiro ekutsvagisa kweWGM microcavity, tsvakiridzo yekugadzira ye microcavity, tsvakiridzo yekushandisa ye microcavity, nezvimwe.
WGM microcavity biochemical sensing
Mukuedza, mana-odha yepamusoro-soro WGM mode M1 (FIG. 1 (a)) yakashandiswa pakunzwa kuyerwa. Kuenzaniswa nechepasi-yakarongeka, kunzwisiswa kwepamusoro-soro kwakagadziridzwa zvikuru (FIG. 1 (b)).
Mufananidzo 1. Resonance mode (a) ye microcapillary cavity uye inoenderana nayo refractive index sensitivity (b)
Tunable optical sefa ine yakakwira Q kukosha
Chekutanga, iyo radial inochinja zvishoma nezvishoma cylindrical microcavity inoburitswa kunze, uyezve wavelength tuning inogona kuwanikwa kuburikidza nemuchina kufambisa nzvimbo yekubatanidza zvichienderana nemusimboti wehukuru hwechimiro kubvira resonant wavelength (Mufananidzo 2 (a)). Iyo tunable kuita uye kusefa bandwidth inoratidzwa muMufananidzo 2 (b) uye (c). Uye zvakare, mudziyo unogona kuona optical displacement sensing ine sub-nanometer kurongeka.
Mufananidzo 2. Schematic dhayagiramu ye tunable optical sefa (a), tunable performance (b) uye sefa bandwidth (c)
WGM microfluidic inodonha resonator
mu microfluidic chip, kunyanya kudonhedza mumafuta (donhwe mu-oiri), nekuda kwehunhu hwekunetsana kwepamusoro, pahupamhi hwemakumi kana kunyange mazana emamicrons, inomiswa mumafuta, ichigadzira ingangoita. bhora rakakwana. Kuburikidza nekugadzirisa refractive index, iyo droplet pachayo yakakwana spherical resonator ine unhu hunopfuura 108. Inodzivisawo dambudziko rekubuda mumafuta. Kune madonhwe akakura, "vachagara" pamadziro ekumusoro kana epasi nekuda kwekusiyana kwehuwandu. Iyi mhando yemadonhwe inogona chete kushandisa iyo lateral excitation mode.
Nguva yekutumira: Oct-23-2023