Micro-nano photonics ke eng?

Micro-nano photonics haholo-holo e ithuta molao oa ho sebelisana pakeng tsa leseli le taba ka tekanyo ea micro le nano le ts'ebeliso ea eona ho hlahisa leseli, phetisetso, taolo, ho lemoha le ho utloa.Lisebelisoa tsa micro-nano photonics sub-wavelength li ka ntlafatsa ka katleho tekanyo ea ho kopanya photon, 'me ho lebeletsoe ho kopanya lisebelisoa tsa photonic ho chip e nyenyane ea optical joaloka lisebelisoa tsa elektroniki.Nano-surface plasmonics ke tšimo e ncha ea micro-nano photonics, eo haholo-holo e ithutang tšebelisano pakeng tsa leseli le taba ho nanostructures ea tšepe.E na le litšoaneleho tsa boholo bo nyane, lebelo le phahameng le ho hlōla moeli oa tloaelo oa ho fapana.Sebopeho sa Nanoplasma-waveguide, se nang le mekhoa e metle ea ntlafatso ea tšimo ea sebaka le litšobotsi tsa ho sefa resonance, ke motheo oa nano-filter, wavelength division multiplexer, optical switch, laser le lisebelisoa tse ling tsa micro-nano optical.Li-microcavities tsa Optical li beha leseli libakeng tse nyane mme li ntlafatsa haholo tšebelisano lipakeng tsa leseli le lintho.Ka hona, microcavity ea optical e nang le ntlha ea boleng bo holimo ke tsela ea bohlokoa ea ho lemoha le ho lemoha lintho tse phahameng.

WGM microcavity

Lilemong tsa morao tjena, optical microcavity e hohetse tlhokomelo e ngata ka lebaka la bokhoni ba eona bo boholo ba ts'ebeliso le bohlokoa ba saense.The optical microcavity haholo-holo e na le microsphere, microcolumn, microring le geometries tse ling.Ke mofuta oa morphologic e itšetlehileng ka optical resonator.Maqhubu a khanyang ka har'a microcavities a bonahala ka botlalo ho microcavity interface, e leng se hlahisang mokhoa oa resonance o bitsoang whispering gallery mode (WGM).Ha li bapisoa le li-resonator tse ling tsa optical, li-microresonator li na le litšobotsi tsa boleng bo phahameng ba Q (tse kholo ho feta 106), molumo oa boemo bo tlaase, boholo bo bonyenyane le ho kopanya habonolo, joalo-joalo, 'me li sebelisitsoe ho li-high-sensitivity biochemical sensing, ultra-low threshold laser. ketso e sa lekanyetsoang.Sepheo sa rona sa lipatlisiso ke ho fumana le ho ithuta litšoaneleho tsa libopeho tse fapaneng le li-morphology tse fapaneng tsa microcavities, le ho sebelisa litšobotsi tsena tse ncha.Litaelo tsa mantlha tsa lipatlisiso li kenyelletsa: lipatlisiso tsa litšobotsi tsa mahlo tsa WGM microcavity, lipatlisiso tsa masela a microcavity, lipatlisiso tsa ts'ebeliso ea microcavity, joalo-joalo.

WGM microcavity biochemical sensing

Tekong, ho ile ha sebelisoa mokhoa oa WGM oa maemo a mane oa boemo bo holimo M1 (FIG. 1 (a)) bakeng sa ho lemoha tekanyo.Ha ho bapisoa le mokhoa o tlaase, kutloisiso ea boemo bo phahameng bo ile ba ntlafatsoa haholo (FIG. 1 (b)).

Setšoantšo sa 1. Resonance mode (a) ea microcapillary cavity le eona e tsamaisanang le eona refractive index sensitivity (b)

Sesefa sa optical se nang le boleng bo holimo ba Q

Ntlha ea pele, cylindrical microcavity e fetohang butle-butle e ntšoa, 'me joale tokiso ea maqhubu e ka finyelloa ka ho tsamaisa boemo ba ho kopanya ka mochine ho latela molao-motheo oa boholo ba sebōpeho ho tloha ha resonant wavelength (Setšoantšo sa 2 (a)).Ts'ebetso e ka khonehang le bandwidth ea ho sefa li bonts'itsoe setšoantšong sa 2 (b) le (c).Ntle le moo, sesebelisoa se khona ho lemoha sensing ea optical displacement ka ho nepahala ha sub-nanometer.

Setšoantšo sa 2. Sets'oants'o sa moralo oa sefahla sa mahlo (a), ts'ebetso e ka fetolehang (b) le sekhahla sa sefene (c)

WGM microfluidic drop resonator

ka chip ea microfluidic, haholo-holo bakeng sa lerotholi ka oli (lerotholi ka har'a oli), ka lebaka la litšobotsi tsa tsitsipano ea holim'a metsi, bakeng sa bophara ba li-microns tse mashome kapa tse makholo, e tla emisoa ka oli, e etsa hoo e batlang e le. pherekano e phethahetseng.Ka optimization ea index ea refractive, lerotholi ka boeona ke spherical resonator e phethahetseng e nang le boleng ba boleng bo fetang 108. E boetse e qoba bothata ba ho fetoha mouoane ka oli.Bakeng sa marotholi a batlang a le maholo, a tla "lula" holim'a marako a ka holimo kapa a tlaase ka lebaka la ho fapana ha bongata.Mofuta ona oa marotholi o ka sebelisa mokhoa oa lateral excitation feela.