Kedu ihe bụ micro-nano photonics?

Micro-nano photonics na-amụkarị iwu mmekọrịta dị n'etiti ìhè na ihe dị na obere ...

Mkrocaviti WGM

N'afọ ndị na-adịbeghị anya, obere oghere anya adọtala ọtụtụ mmasị n'ihi nnukwu ikike ojiji ya na mkpa sayensị. Obere oghere anya agụnyekarị obere oghere anya, obere kọlụm, obere oghere anya na geometries ndị ọzọ. Ọ bụ ụdị nnukwu oghere anya morphologic dabere na morphologic. Ebili mmiri ọkụ na obere oghere anya na-egosipụta nke ọma na njikọ microcavity, na-ebute ọnọdụ resonance a na-akpọ whispering gallery mode (WGM). Ma e jiri ya tụnyere ndị ọzọ na-akpọ resonators optical, obere oghere anya nwere njirimara nke nnukwu uru Q (karịa 106), obere olu, obere nha na njikọta dị mfe, wdg, ma etinyere ya na mmetụta biochemical dị elu, obere oghere laser na ihe na-abụghị ahịrị. Ebumnuche nyocha anyị bụ ịchọta na ịmụ banyere njirimara nke usoro dị iche iche na ụdị dị iche iche nke obere oghere anya, na itinye njirimara ọhụrụ ndị a n'ọrụ. Ntuziaka nyocha bụ isi gụnyere: nchọpụta njirimara anya nke obere oghere anya nke obere oghere anya, nchọpụta mmepụta nke obere oghere anya, nyocha ngwa nke obere oghere anya, wdg.

Nchọpụta ihe gbasara microcavity nke WGM

N'ime nnwale ahụ, e jiri ụdị WGM dị elu nke usoro anọ M1 (FIG. 1(a)) mee ihe maka nha nchọpụta. Ma e jiri ya tụnyere ụdị dị ala, e mere ka mmetụta nke ụdị dị elu dịkwuo mma (FIG. 1(b)).

Foto 1. Ụdị resonance (a) nke oghere microcapillary na mmetụta ya na-egosi refractive index (b)

Nzacha anya a na-agbanwe agbanwe nwere uru Q dị elu

Nke mbụ, a na-ewepụ obere oghere radial nke na-agbanwe nwayọ nwayọ, e mesịa, enwere ike ime mgbanwe ogologo ebili mmiri site na ịkwaga ọnọdụ njikọ ahụ site na igwe dabere na ụkpụrụ nha ọdịdị ebe ọ bụ na ogologo ebili mmiri resonant (Foto 2 (a)). A na-egosi arụmọrụ a na-agbanwe agbanwe na bandwit nzacha na Foto 2 (b) na (c). Na mgbakwunye, ngwaọrụ ahụ nwere ike ime nchọpụta mbugharị anya site na izi ezi nke sub-nanometer.

Foto nke 2. Ihe osise eserese nke nzacha anya a na-agbanwe agbanwe (a), arụmọrụ a na-agbanwe agbanwe (b) na bandwit nzacha (c)

Mkpọda mmiri mmiri nke WGM microfluidic

na obere mmiri mmiri, karịsịa maka obere mmiri mmiri dị na mmanụ (ntụpọ mmiri dị na mmanụ), n'ihi njirimara nke nrụgide elu, maka dayameta nke iri ma ọ bụ ọbụna ọtụtụ narị microns, a ga-akwụsịtụ ya na mmanụ ahụ, na-emepụta okirikiri zuru oke. Site na nhazi nke ntụaka refractive, obere mmiri mmiri ahụ n'onwe ya bụ resonator gburugburu zuru oke nke nwere ihe karịrị 108. Ọ na-ezerekwa nsogbu nke ịpụ apụ na mmanụ ahụ. Maka nnukwu mmiri mmiri, ha ga- "nọdụ ala" na mgbidi akụkụ elu ma ọ bụ ala n'ihi ọdịiche njupụta. Ụdị obere mmiri mmiri a nwere ike iji naanị ụdị mkpali n'akụkụ.