Iyini i-electro-optic modulator optical frequency comb? Ingxenye Yokuqala

I-optical frequency comb iyi-spectrum eyakhiwe uchungechunge lwezingxenye ze-frequency ezilinganiselwe ngokulinganayo ku-spectrum, ezingakhiqizwa ngama-laser avaliwe ngemodi, ama-resonator, nomaama-modulators e-electro-opticalAma-combs e-optical frequency akhiqizwa yi-ama-modulators e-electro-opticzinezimpawu zokuphindaphindwa okuphezulu, ukomisa ngaphakathi kanye namandla aphezulu, njll., ezisetshenziswa kabanzi ekulinganisweni kwezinsimbi, i-spectroscopy, noma i-physics eyisisekelo, futhi zidonsele isithakazelo sabacwaningi abaningi eminyakeni yamuva.

Muva nje, u-Alexandre Parriaux nabanye abavela eNyuvesi yaseBurgendi eFrance bashicilele iphepha lokubuyekeza ephephabhukwini i-Advances in Optics and Photonics, bethula ngokuhlelekile inqubekela phambili yocwaningo lwakamuva kanye nokusetshenziswa kwama-optical frequency combs akhiqizwe yi-ukuguqulwa kwe-electro-optical: Kuhlanganisa ukwethulwa kwekamu lemvamisa yokukhanya, indlela kanye nezici zekamu lemvamisa yokukhanya elikhiqizwe yii-electro-optic modulator, futhi ekugcineni ibala izimo zokusetshenziswa kwei-electro-optic modulatori-optical frequency comb ngokuningiliziwe, okuhlanganisa ukusetshenziswa kwe-precision spectrum, ukuphazamiseka kwe-double optical comb, ukulinganiswa kwezinsimbi kanye nokukhiqizwa kwamagagasi ngokungahleliwe, futhi ixoxa ngesimiso esingemuva kwezinhlelo ezahlukene zokusebenza. Okokugcina, umbhali unikeza ithuba lobuchwepheshe be-electro-optic modulator optical frequency comb.

01 Ingemuva

Kwakuyiminyaka engama-60 edlule kule nyanga lapho uDkt. Maiman asungula khona i-laser yokuqala ye-ruby. Eminyakeni emine kamuva, uHargrove, uFock noPollack baseBell Laboratories e-United States baba ngabokuqala ukubika nge-active mode-locking etholakale kuma-laser e-helium-neon, i-mode-locking laser spectrum esizindeni sesikhathi imelelwa njengokukhishwa kwe-pulse, esizindeni semvamisa kunochungechunge lwemigqa emifushane ehlukene nelinganayo, efana kakhulu nokusetshenziswa kwethu kwansuku zonke kwama-combs, ngakho-ke sibiza le spectrum ngokuthi “i-optical frequency comb”. Ibizwa ngokuthi “i-optic frequency comb”.

Ngenxa yokusetshenziswa okuhle kwe-optical comb, umklomelo weNobel kuFiziksi ngo-2005 wanikezwa uHansch noHall, abenze umsebenzi wobuphayona kubuchwepheshe be-optical comb, kusukela ngaleso sikhathi, ukuthuthukiswa kwe-optical comb sekufinyelele esigabeni esisha. Ngenxa yokuthi izinhlelo zokusebenza ezahlukene zinezidingo ezahlukene ze-optical comb, njengamandla, isikhala somugqa kanye nobude be-wavelength obuphakathi, lokhu kuholele esidingweni sokusebenzisa izindlela ezahlukene zokuhlola ukukhiqiza ama-optical comb, njenge-mode-locked lasers, ama-micro-resonators kanye ne-electro-optical modulator.

ISITHOMBE 1 I-spectrum yesizinda sesikhathi kanye ne-spectrum yesizinda semvamisa yekamu lemvamisa yokukhanya
Umthombo wesithombe: Ama-combs e-electro-optic frequency

Kusukela kwatholakala ama-optical frequency combs, ama-optical frequency combs amaningi akhiqizwe kusetshenziswa ama-mode-locked lasers. Kuma-mode-locked lasers, i-cavity enesikhathi sokubuya esingu-τ isetshenziselwa ukulungisa ubudlelwano besigaba phakathi kwama-longitudinal modes, ukuze kutholakale izinga lokuphindaphinda kwe-laser, okungaba kusukela ku-megahertz (MHz) kuya ku-gigahertz (GHz).

Ikamu lemvamisa yokukhanya elikhiqizwa yi-micro-resonator lisekelwe emiphumeleni engeyona eye-linear, futhi isikhathi sokuhamba nokubuya sinqunywa ubude be-micro-cavity, ngoba ubude be-micro-cavity ngokuvamile bungaphansi kuka-1mm, ikamu lemvamisa yokukhanya elikhiqizwa yi-micro-cavity ngokuvamile liyi-10 gigahertz kuya ku-1 terahertz. Kunezinhlobo ezintathu ezivamile zama-microcavity, ama-microtubules, ama-microspheres nama-microrings. Kusetshenziswa imiphumela engeyona eye-linear kuma-fiber optical, njenge-Brillouin scattering noma i-four-wave mixing, kuhlanganiswe nama-microcavities, ama-optical frequency combs ku-tens of nanometers range angakhiqizwa. Ngaphezu kwalokho, ama-optical frequency combs angakhiqizwa ngokusebenzisa amanye ama-acousto-optic modulators.