He aha ka micro-nano photonics?

Ke aʻo nui nei nā kiʻi kiʻi micro-nano i ke kānāwai o ka launa pū ʻana ma waena o ka māmā a me ka mea ma ka micro a me nano scale a me kāna noi ʻana i ka hana māmā, hoʻouna, hoʻoponopono, ʻike a me ka ʻike. Hiki ke hoʻomaikaʻi maikaʻi nā mea hana kiʻi kiʻi kiʻi kiʻi micro-nano i ke kiʻekiʻe o ka hoʻohui ʻana o ka photon, a manaʻo ʻia e hoʻohui i nā mea photonic i loko o kahi puʻupuʻu optical liʻiliʻi e like me nā ʻāpana uila. ʻO ka Nano-surface plasmonics kahi kahua hou o ka micro-nano photonics, kahi e aʻo nui ai i ka pilina ma waena o ka māmā a me nā mea i loko o nā nanostructure metala. Loaʻa iā ia nā hiʻohiʻona o ka liʻiliʻi liʻiliʻi, ka wikiwiki kiʻekiʻe a lanakila i ka palena diffraction kuʻuna. ʻO ka nanoplasma-waveguide structure, nona ka hoʻonui ʻana i ka māla kūloko a me nā ʻano kānana resonance, ʻo ia ke kumu o ka nano-filter, wavelength division multiplexer, optical switch, laser and other micro-nano optical devices. Hoʻopili nā microcavities i ka mālamalama i nā wahi liʻiliʻi a hoʻonui nui i ka pilina ma waena o ka māmā a me ka mea. No laila, ʻo ka microcavity optical me ke kumu kiʻekiʻe he ala koʻikoʻi o ka ʻike kiʻekiʻe a me ka ʻike.

WGM microcavity

I kēia mau makahiki i hala iho nei, ua nui ka nānā ʻana o ka microcavity optical ma muli o kona mana hoʻohana nui a me ka manaʻo ʻepekema. ʻO ka microcavity optical ka nui o ka microsphere, microcolumn, microring a me nā geometries ʻē aʻe. He ʻano ia o ka morphologic dependent optical resonator. Hōʻike piha ʻia nā nalu māmā i nā microcavity ma ka microcavity interface, ka hopena i kahi mode resonance i kapa ʻia ʻo whispering gallery mode (WGM). Hoʻohālikelike ʻia me nā resonator optical ʻē aʻe, loaʻa nā microresonators i nā hiʻohiʻona o ka waiwai Q kiʻekiʻe (ʻoi aku ka nui ma mua o 106), ka leo haʻahaʻa haʻahaʻa, ka liʻiliʻi liʻiliʻi a me ka hoʻohui maʻalahi, a me nā mea ʻē aʻe, a ua hoʻohana ʻia i ka high-sensitivity biochemical sensing, ultra-low threshold laser a hana laina ole. ʻO kā mākou pahuhopu noiʻi ʻo ka ʻimi a noiʻi ʻana i nā ʻano o nā hale like ʻole a me nā morphologies like ʻole o nā microcavities, a e hoʻopili i kēia mau ʻano hou. ʻO nā kuhikuhi noiʻi koʻikoʻi: ka noiʻi ʻana i nā hiʻohiʻona o WGM microcavity, ka noiʻi ʻana o ka microcavity, noiʻi noiʻi o ka microcavity, etc.

WGM microcavity biochemical sensing

I loko o ka hoʻokolohua, ua hoʻohana ʻia ke ʻano WGM kūlana kiʻekiʻe ʻehā M1(FIG. 1(a)) no ke ana ʻana. Ke hoʻohālikelike ʻia me ke ʻano haʻahaʻa haʻahaʻa, ua hoʻomaikaʻi nui ʻia ka naʻau o ke ʻano kiʻekiʻe (FIG. 1 (b)).

Kiʻi 1. ʻO ke ʻano resonance (a) o ka lua microcapillary a me kona ʻike kikoʻī refractive e pili ana (b)

Hiki ke hoʻopaʻa ʻia me ka waiwai Q kiʻekiʻe

ʻO ka mea mua, huki ʻia ka microcavity cylindrical radial, a laila hiki ke hoʻokō ʻia ke kani ʻana o ka nalu ma ka neʻe ʻana i ke kūlana hoʻohui ma muli o ke kumu o ka nui o ke ʻano mai ka lōʻihi o ka hawewe resonant (Figure 2 (a)). Hōʻike ʻia ka hana tunable a me ka bandwidth kānana ma ke Kiʻi 2 (b) a me (c). Eia hou, hiki i ka mea hana ke hoʻomaopopo i ka ʻike ʻana i ka hoʻoneʻe optical me ka pololei sub-nanometer.

Kiʻi 2. Kiʻikuhi kiʻi o ka kānana optical tunable (a), hana hoʻokani pila (b) a me ka bandwidth kānana (c)

WGM microfluidic drop resonator

i loko o ka microfluidic chip, oi loa aku no ka droplet i loko o ka aila (droplet in-oil), ma muli o nā ʻano o ka ʻili o ka ʻili, no ke anawaena o nā ʻumi a i ʻole nā ​​haneli o nā microns, e hoʻokuʻu ʻia i ka ʻaila, e hana ana i kahi kokoke. poepoe hemolele. Ma o ka optimization o refractive index, ʻo ka droplet ponoʻī he resonator spherical maikaʻi loa me kahi kumu maikaʻi ʻoi aku ma mua o 108. Ua pale pū ʻia ka pilikia o ka evaporation i ka ʻaila. No nā kulu liʻiliʻi nui, e "noho" lākou ma nā paia ʻaoʻao o luna a i lalo paha ma muli o nā ʻokoʻa like ʻole. Hiki i kēia ʻano droplet ke hoʻohana i ke ʻano hoʻohiwahiwa lateral.