Pfupi Ongororo yeLithium Niobate Crystal uye Zvishandiso Zvayo - Chikamu 7: Iyo Dielectric Superlattice yeLN Crystal

Pfupi Ongororo yeLithium Niobate Crystal uye Zvishandiso Zvayo - Chikamu 7: Iyo Dielectric Superlattice yeLN Crystal

Muna 1962, Armstrong et al.akatanga akurudzira pfungwa yeQPM (Quasi-phase-match), iyo inoshandisa inverted lattice vector inopihwa ne superlattice kutsiva.pHase mismatch mune optical parametric process.Iyo polarization nzira yeferroelectricspesvedzeros the nonlinear polarization rate χ2. QPM inogona kuwanikwa nekugadzirira ferroelectric domain zvimiro zvine zvinopesana periodic polarization nzira mumitumbi yeferroelectric., kusanganisira lithium niobate, lithium tantalate, uyeKTPmakristasi.LN crystal ndiyozvakanyanyakushandiswazvinhumumunda uyu.

Muna 1969, Camlibel akakurudzira kuti ferroelectric domain yeLNuye mamwe makristasi eferroelectric anogona kuchinjwa nekushandisa high voltage electric field pamusoro pe30 kV/mm.Zvisinei, munda wemagetsi wakakwirira kudaro unogona kubaya kristaro zviri nyore.Panguva iyoyo, zvaive zvakaoma kugadzirira yakanaka electrode zvimiro uye kudzora nemazvo iyo domain polarization reversal process.Kubva ipapo, kuedza kwakaitwa kuvaka iyo yakawanda-domain chimiro nekuchinjanisa lamination yeLNmakristasi munzvimbo dzakasiyana dzepolarization, asi huwandu hwemachipi hunogona kuitika hushoma.Muna 1980, Feng et al.yakawana makristasi ane periodic polarization domain dhizaini nenzira yekukura kwe eccentric nekurerekera crystal rotation centre uye thermal field axisy-symmetric center, uye akaziva kuti frequency yakapetwa kaviri kubuda kwe1.06 μm laser, iyo yakasimbisa iyoQPMdzidziso.Asi nzira iyi ine dambudziko guru mukutonga kwakanaka kwe periodic structure.Muna 1993, Yamada et al.yakabudirira kugadzirisa periodic domain polarization inversion process nekubatanidza semiconductor lithography process pamwe neyakaiswa yemagetsi field method.Inoshandiswa electric field polarization nzira yave zvishoma nezvishoma yave mainin gadziriro tekinoroji ye periodic poledLNkristaro.Parizvino, iyo periodic yakamiraLNcrystal yakatengeswa uye ukobvu hwayo hunogonabekupfuura 5 mm.

Iko kushandiswa kwekutanga kwe periodic poledLNcrystal inonyanya kutariswa kune laser frequency kutendeuka.Pakare muna 1989, Ming et al.yakakurudzira pfungwa ye dielectric superlattices yakavakirwa pane superlattices yakavakwa kubva kune ferroelectric domainsLNmakristasi.Iro rakapidiguka reratidzo repamusoro-soro richatora chikamu mukukurudzira uye kuparadzira kwechiedza uye masaisai eruzha.Muna 1990, Feng naZhu et al.akakurudzira dzidziso yezvakawanda quasi kufananidzwa.Muna 1995, Zhu et al.yakagadzirirwa quasi-periodic dielectric superlattices nekamuri tembiricha polarization tekinoroji.Muna 1997, kuongororwa kwekuyedza kwakaitwa, uye kubatanidza kunoshanda kwemaviri optical parametric maitiro.-frequency kupetwa kaviri uye frequency summing yakaonekwa mune quasi-periodic superlattice, nekudaro kuwana inoshanda laser katatu frequency yakapetwa kaviri kekutanga.Muna 2001, Liu et al.yakagadzira chirongwa chekuziva matatu-mavara laser yakavakirwa pachikamu-chikamu chekufananidza.Muna 2004, Zhu et al akaziva iyo optical superlattice dhizaini yeakawanda-wavelength laser kubuda uye kushandiswa kwayo mune-yakasimba-nyika lasers.Muna 2014, Jin et al.akagadzira optical superlattice yakabatanidzwa photonic chip yakavakirwa pakugadzirisa zvakareLNwaveguide optical nzira (sezvinoratidzwa mumufananidzo), kuwana hunobudirira chizvarwa cheakabatikidzwa mafotoni uye yakakwirira-kumhanya electro-optic modulation pane chip kekutanga.Muna 2018, Wei et al naXu et al vakagadzirira 3D periodic domain zvimiro zvinoenderana neLNmakristasi, uye akaziva anobudirira asina mutsara danda kuumbwa uchishandisa 3D periodic domain zvimiro muna 2019.

Integrated active photonic chip on LN and its schematic diagram-WISOPTIC

Yakabatanidzwa inoshanda photonic chip paLN (kuruboshwe) uye dhiyabhorosi yayo (kurudyi)

Kuvandudzwa kwedielectric superlattice theory kwakasimudzira kushandiswa kweLNcrystal nemamwe makristasi eferroelectric kusvika pakukwirira kutsva, akavapakukosha kwekushandisa tarisiro mune ese-yakasimba-nyika lasers, optical frequency comb, laser pulse compression, danda kuumbwa uye akapinzwa mwenje masosi muhuwandu hwekutaurirana.


Nguva yekutumira: Feb-03-2022