Chii chinonzi electro-optic modulator optical frequency comb?Chikamu Chekutanga

An optical frequency comb is spectrum inoumbwa neakatevedzana akaenzana akapatsanurwa frequency zvikamu pa spectrum, izvo zvinogona kugadzirwa nemodhi-yakakiyiwa lasers, resonators, kana.electro-optical modulators. Optical frequency mizinga inogadzirwa neelectro-optic modulatorsvane hunhu hwekudzokororwa kwakawanda, kuomesa mukati uye simba rakawanda, nezvimwewo, izvo zvinoshandiswa zvakanyanya mukugadzirisa chiridzwa, spectroscopy, kana yakakosha fizikisi, uye zvakakwezva kufarira kwakawanda kwevaongorori mumakore achangopfuura.

Nguva pfupi yadarika, Alexandre Parriaux nevamwe vanobva kuYunivhesiti yeBurgendi kuFrance vakaburitsa bepa rekuongorora mupepanhau Advances in Optics and Photonics, vachiunza zvakarongeka kufambira mberi kwekutsvagisa uye kushandiswa kweiyo optical frequency mizinga inogadzirwa ne.electro-optical modulation: Inosanganisira kuunzwa kwe optical frequency comb, nzira uye hunhu hwe optical frequency comb inogadzirwa neelectro-optic modulator, uye pakupedzisira inonyora mamiriro ekushandiswa kweelectro-optic modulatorOptical frequency comb zvakadzama, kusanganisira kushandiswa kweiyo chaiyo spectrum, kaviri optical comb kupindira, chiridzwa calibration uye anopokana waveform chizvarwa, uye inokurukura musimboti uri kumashure kwekushandisa kwakasiyana. Pakupedzisira, munyori anopa tarisiro ye electro-optic modulator optical frequency comb tekinoroji.

01 Background

Aive makore 60 apfuura mwedzi uno apo Dr. Maiman akagadzira rekutanga reruby laser. Makore mana gare gare, Hargrove, Fock naPollack veBell Laboratories muUnited States ndivo vaive vekutanga kutaura iyo inoshanda mode-yekuvhara yakaitwa muhelium-neon lasers, iyo mode-locking laser spectrum mune yenguva domain inomiririrwa semhepo inobuda, muFrequency domain inoteedzana mitsara mipfupi uye yakaenzana, yakafanana nekushandisa kwedu kwemazuva ese mizinga, saka tinodaidza iyi spectrum "optical frequency comb". Inonzi "optic frequency comb".

Nekuda kwetarisiro yakanaka yekushandisa ye optical comb, Mubairo weNobel muFizikisiki muna 2005 wakapihwa Hansch naHall, vakaita basa rekupayona pahunyanzvi hwekugadzira muzinga, kubva ipapo, kuvandudzwa kweoptical comb kwasvika padanho idzva. Nekuti maapplication akasiyana ane akasiyana macombs ekumeso, senge simba, mitsara yepakati uye yepakati wavelength, izvi zvakonzera kudikanwa kwekushandisa nzira dzakasiyana dzekuyedza kugadzira mizinga yemaziso, senge mode-locked lasers, micro-resonators uye electro-optical. modulator.

FIG. 1 Nguva domain spectrum uye frequency domain spectrum ye optical frequency comb
Mufananidzo kunobva: Electro-optic frequency mizinga

Kubva zvakawanikwa optical frequency combs, akawanda optical frequency combs akagadzirwa achishandisa mode-akakiya lasers. Mumamodhi-akakiyiwa lasers, mhango ine rwendo rwekutenderera nguva ye τ inoshandiswa kugadzirisa hukama hwechikamu pakati pemamodhi erefu, kuitira kuona chiyero chekudzokorora kwelaser, inogona kazhinji kubva kumegahertz (MHz) kuenda kugigahertz ( GHz).

Iyo optical frequency muzinga inogadzirwa neiyo micro-resonator yakavakirwa pane isina mutsara mhedzisiro, uye nguva yekudzoka-yekudzoka inotarwa nehurefu hweiyo micro-cavity, nekuti kureba kweiyo micro-cavity kazhinji isingasviki 1mm, iyo optical frequency. muzinga unogadzirwa neiyo micro-cavity inowanzoita gumi gigahertz kusvika 1 terahertz. Kune matatu akajairika marudzi e microcavities, microtubules, microspheres uye microrings. Kushandisa nonlinear mhedzisiro mune optical fibers, senge Brillouin kuparadzira kana mana-wave kusanganisa, yakasanganiswa ne microcavities, optical frequency combs mumakumi emhando ye nanometer inogona kugadzirwa. Uye zvakare, optical frequency mizinga inogona zvakare kugadzirwa nekushandisa mamwe acousto-optic modulators.