Yintoni i-electro-optic modulator optical frequency comb? Inxalenye yokuQala

I-optical frequency comb yi-spectrum eyenziwe luchungechunge lwee-frequency components ezibekwe ngokulinganayo kwi-spectrum, ezinokuthi ziveliswe yi-mode-locked lasers, ii-resonators, okanyeiimodulators ze-electro-opticalIi-optical frequency combs eziveliswa yiiimodulators ze-electro-opticzineempawu zokuphindaphinda okuphezulu, ukomisa ngaphakathi kunye namandla aphezulu, njl.njl., ezisetyenziswa kakhulu ekulinganisweni kwezixhobo, i-spectroscopy, okanye i-basic physics, kwaye zitsale umdla wabaphandi abaninzi kwiminyaka yakutshanje.

Kutshanje, uAlexandre Parriaux kunye nabanye abavela kwiYunivesithi yaseBurgendi eFransi bapapashe iphepha lophononongo kwijenali i-Advances in Optics and Photonics, besazisa ngokucwangcisiweyo inkqubela phambili yophando lwamva nje kunye nokusetyenziswa kwee-optical frequency combs ezenziwe yiukuguquguquka kwe-electro-optical: Ibandakanya ukungeniswa kwe-optical frequency comb, indlela kunye neempawu ze-optical frequency comb eyenziwe yii-electro-optic modulator, kwaye ekugqibeleni ibala iimeko zesicelo sei-electro-optic modulatorngokweenkcukacha i-optical frequency comb, kuquka ukusetyenziswa kwe-precision spectrum, i-double optical comb interference, i-instrument calibration kunye ne-annadically waveform generation, kwaye ixoxa ngomgaqo osemva kwezicelo ezahlukeneyo. Okokugqibela, umbhali unika ithuba lobuchwepheshe be-electro-optic modulator optical frequency comb.

01 Imvelaphi

Kwakuyiminyaka engama-60 eyadlulayo kule nyanga uGqr. Maiman wasungula i-laser yokuqala yeruby. Kwiminyaka emine kamva, uHargrove, uFock kunye noPollack beBell Laboratories eUnited States babengabokuqala ukunika ingxelo nge-active mode-locking efunyenwe kwi-helium-neon lasers, i-mode-locking laser spectrum kwi-time domain imelwe njenge-pulse emission, kwi-frequency domain kukho uthotho lwemigca emifutshane ehlukeneyo nelinganayo, efana kakhulu nokusetyenziswa kwethu kwemihla ngemihla kwe-combs, ngoko ke le spectrum siyibiza ngokuba yi-"optical frequency comb". Ibizwa ngokuba yi-"optic frequency comb".

Ngenxa yokusetyenziswa kakuhle kwe-optical comb, iMbasa yeNobel kwiFiziksi ngo-2005 yanikwa uHansch noHall, abenze umsebenzi wokuqala kwitekhnoloji ye-optical comb, ukusukela ngoko, uphuhliso lwe-optical comb lufikelele kwinqanaba elitsha. Ngenxa yokuba izicelo ezahlukeneyo zineemfuno ezahlukeneyo ze-optical combs, ezifana namandla, isithuba somgca kunye nobude be-wavelength ephakathi, oku kukhokelele kwimfuneko yokusebenzisa iindlela ezahlukeneyo zovavanyo ukuvelisa i-optical combs, njenge-mode-locked lasers, i-micro-resonators kunye ne-electro-optical modulator.

UMZOBO 1 I-Time domain spectrum kunye ne-frequency domain spectrum ye-optical frequency comb
Umthombo womfanekiso: Ii-electro-optic frequency combs

Ukususela ekufumanekeni kwee-optical frequency combs, uninzi lwee-optical frequency combs zenziwe kusetyenziswa ii-mode-locked lasers. Kwii-mode-locked lasers, i-cavity ene-round-trip time ye-τ isetyenziselwa ukulungisa ubudlelwane besigaba phakathi kwee-longitudinal modes, ukuze kuchongwe izinga lokuphindaphinda kwe-laser, enokuthi ngokubanzi ibe ukusuka kwi-megahertz (MHz) ukuya kwi-gigahertz (GHz).

I-optical frequency comb eveliswa yi-micro-resonator isekelwe kwiziphumo ezingezizo eze-linear, kwaye ixesha lokujika lixhomekeke kubude be-micro-cavity, kuba ubude be-micro-cavity ngokubanzi bungaphantsi kwe-1mm, i-optical frequency comb eveliswa yi-micro-cavity ngokubanzi ingama-10 gigahertz ukuya kwi-1 terahertz. Kukho iintlobo ezintathu eziqhelekileyo ze-microcavities, ii-microtubules, ii-microspheres kunye nee-microrings. Ukusebenzisa iziphumo ezingezizo eze-linear kwi-optical fibers, ezifana ne-Brillouin scattering okanye i-four-wave mixing, kunye ne-microcavities, ii-optical frequency combs kuluhlu lwee-nanometers ezingamashumi zinokwenziwa. Ukongeza, ii-optical frequency combs nazo zinokwenziwa ngokusebenzisa ezinye ii-acousto-optic modulators.