Optical frequency comb imhando ye spectrum inoumbwa nezvikamu zve frequency zvakapatsanurwa zvakaenzana pa spectrum, izvo zvinogona kugadzirwa nema mode-locked lasers, resonators, kanamamodulator emagetsi-opticalMakombi emagetsi anogadzirwa nemamodulator emagetsi-opticane hunhu hwekudzokorora kakawanda, kuomesa mukati uye simba rakawanda, nezvimwewo, izvo zvinoshandiswa zvakanyanya mukugadzirisa zvishandiso, spectroscopy, kana fizikisi yepakutanga, uye zvakakwezva kufarira kwevaongorori vakawanda mumakore achangopfuura.
Munguva pfupi yapfuura, Alexandre Parriaux nevamwe vekuYunivhesiti yeBurgendi muFrance vakaburitsa bepa rekuongorora mujenari reAdvances in Optics and Photonics, vachisuma nenzira yakarongwa kufambira mberi kwekutsvagisa kwazvino uye kushandiswa kwemakombi emagetsi anogadzirwa nemodulation yemagetsi-optical: Inosanganisira kuunzwa kwemuchina we optical frequency comb, nzira uye hunhu hwemuchina we optical frequency comb unogadzirwa nemodulator yemagetsi-optic, uye pakupedzisira inotsanangura mamiriro ekushandiswa kwemodulator yemagetsi-opticoptical frequency comb zvakadzama, kusanganisira kushandiswa kwe precision spectrum, double optical comb interference, instrument calibration uye argumentary waveform generation, uye inokurukura musimboti uri shure kwekushandiswa kwakasiyana. Chekupedzisira, munyori anopa mukana we electro-optic modulator optical frequency comb technology.
01 Makumbo
Mwedzi uno wapfuura makore makumi matanhatu Dr. Maiman vakagadzira laser yekutanga yeruby. Makore mana gare gare, Hargrove, Fock naPollack vekuBell Laboratories muUnited States ndivo vakatanga kutaura nezvekuvharwa kwemode-locking kwakaitwa muma laser ehelium-neon, iyo mode-locking laser spectrum muchikamu chenguva inomiririrwa sepulse emission, muchikamu chefrequency mune nhevedzano yemitsara mipfupi yakasiyana uye yakaenzana, yakafanana zvikuru nekushandiswa kwedu kwemazuva ese kwemacombs, saka tinodana iyi spectrum kuti "optical frequency comb". Inonzi "optic frequency comb".
Nekuda kwekushandiswa kwakanaka kwe optical comb, Mubairo weNobel muFizikisi muna 2005 wakapihwa Hansch naHall, avo vakaita basa guru pakugadzira tekinoroji ye optical comb, kubvira ipapo, kugadzirwa kwe optical comb kwasvika padanho idzva. Nekuti mashandisirwo akasiyana ane zvinodiwa zvakasiyana zve optical combs, zvakaita sesimba, nzvimbo yemutsara uye central wavelength, izvi zvakaita kuti pave nekudiwa kwekushandisa nzira dzakasiyana dzekuedza kugadzira optical combs, dzakadai semode-locked lasers, micro-resonators uye electro-optical modulator.
Mufananidzo 1. Nguva yenzvimbo yemuchina uye frequency yenzvimbo yemuchina we optical frequency comb
Mufananidzo unobva: Makombi emagetsi emagetsi
Kubva pakawanikwa ma optical frequency combs, ma optical frequency combs mazhinji akagadzirwa achishandisa mode-locked lasers. Mu mode-locked lasers, cavity ine round-trip time ye τ inoshandiswa kugadzirisa phase relationship pakati pe longitudinal modes, kuitira kuti ione repetition rate ye laser, iyo inogona kuva kubva pa megahertz (MHz) kusvika ku gigahertz (GHz).
Kamu ye optical frequency inogadzirwa ne micro-resonator inobva pamigumisiro isiri yemutsara, uye nguva yekudzoka inotsanangurwa nehurefu hwekamu ye micro-cavity, nekuti hurefu hwekamu ye micro-cavity hunowanzova pasi pe 1mm, kamu ye optical frequency inogadzirwa nekamu ye micro-cavity inowanzova 10 gigahertz kusvika 1 terahertz. Kune mhando nhatu dzakajairika dzekamu ye micro-cavities, microtubules, microspheres uye microrings. Uchishandisa mhedzisiro isiri yemutsara mu optical fibers, senge Brillouin scattering kana four-wave mixing, pamwe chete ne micro-cavities, optical frequency combs dziri mumakumi e nanometers range dzinogona kugadzirwa. Pamusoro pezvo, optical frequency combs dzinogonawo kugadzirwa nekushandisa mamwe ma acousto-optic modulators.
Nguva yekutumira: Zvita-18-2023