Ndemanga Yachidule ya Lithium Niobate Crystal ndi Ntchito Zake - Gawo 7: Dielectric Superlattice ya LN Crystal

Ndemanga Yachidule ya Lithium Niobate Crystal ndi Ntchito Zake - Gawo 7: Dielectric Superlattice ya LN Crystal

Mu 1962, Armstrong et al.Poyamba adapereka lingaliro la QPM (Quasi-phase-match), yomwe imagwiritsa ntchito cholumikizira chapamwamba choperekedwa ndi superlattice kubweza.pHase mismatch mu optical parametric process.Njira ya polarization ya ferroelectricsmphamvus kuchuluka kwa polarization kosagwirizana χ2. QPM imatha kuzindikirika pokonzekera zida za ferroelectric domain zokhala ndi mayendedwe osagwirizana ndi ma polarization m'matupi a ferroelectric., kuphatikizapo lithiamu niobate, lithium tantalate, ndiKTPmakhiristo.LN crystal ndiyekwambirintchitozakuthupim'munda uno.

Mu 1969, Camlibel adapereka lingaliro lakuti dera la ferroelectric laLNndi makristalo ena a ferroelectric amatha kusinthidwa pogwiritsa ntchito mphamvu yamagetsi yamagetsi yopitilira 30 kV/mm.Komabe, malo amagetsi oterowo amatha kubowola kristaloyo mosavuta.Panthawiyo, zinali zovuta kukonzekera ma elekitirodi abwino ndikuwongolera molondola njira yosinthira polarization.Kuyambira pamenepo, kuyesayesa kwapangidwa kuti apange mawonekedwe amitundu yambiri mwa kusinthana kwa laminationLNmakhiristo m'njira zosiyanasiyana za polarization, koma kuchuluka kwa tchipisi komwe kumatha kuzindikirika ndi kochepa.Mu 1980, Feng et al.adapeza makhiristo okhala ndi mawonekedwe a nthawi ndi nthawi polarization potengera kukula kwa eccentric mwa kukondera malo ozungulira makristalo ndi malo otenthetsera axisy-symmetric Center, ndikuzindikira kuwirikiza kawiri kutulutsa kwa 1.06 μm laser, komwe kumatsimikiziraMtengo wa QPMchiphunzitso.Koma njira iyi imakhala ndi vuto lalikulu pakuwongolera bwino kwa nthawi ndi nthawi.Mu 1993, Yamada et al.anathetsa bwinobwino ndondomeko ya periodic domain polarization inversion pophatikiza ndondomeko ya semiconductor lithography ndi njira yogwiritsira ntchito magetsi.Njira yogwiritsira ntchito polarization yamagetsi yogwiritsidwa ntchito pang'onopang'ono yakhala ukadaulo wokonzekera wanthawi zonseLNkristalo.Pakali pano, periodic inalembedwaLNcrystal yakhala ikugulitsidwa ndipo makulidwe ake amathabekuposa 5 mm.

Kugwiritsidwa ntchito koyamba kwa periodic poledLNcrystal makamaka amaganiziridwa kuti laser frequency kutembenuka.Pofika mu 1989, Ming et al.adapereka lingaliro la ma dielectric superlattices kutengera ma superlattice opangidwa kuchokera kumadera a ferroelectricLNmakhiristo.The inverted lattice wa superlattice adzakhala nawo mu chisangalalo ndi kufalitsa kuwala ndi mafunde phokoso.Mu 1990, Feng ndi Zhu et al.adapereka chiphunzitso chofananira ndi ma quasi angapo.Mu 1995, Zhu et al.adakonza ma quasi-periodic dielectric superlattices ndi njira yosinthira kutentha kwachipinda.Mu 1997, kutsimikizira koyeserera kunachitika, ndikuphatikizana kothandiza kwa njira ziwiri zowonera zowonera.-kuwirikiza kawiri ndi kuwerengetsa pafupipafupi kunachitika mu quasi-periodic superlattice, motero kukwanitsa kuwirikiza kawiri kawiri kawiri kawiri koyamba.Mu 2001, Liu et al.adapanga chiwembu chothandizira laser yamitundu itatu kutengera ma quasi-phase mafananidwe.Mu 2004, Zhu et al adazindikira mapangidwe apamwamba kwambiri a laser multi-wavelength ndikugwiritsa ntchito ma lasers amtundu uliwonse.Mu 2014, Jin et al.adapanga chophatikizika chapamwamba chapamwamba chophatikizika cha Photonic kutengera zosinthikansoLNwaveguide optical path (monga momwe tawonetsera pachithunzichi), kukwaniritsa m'badwo wabwino wa mafotoni otsekeredwa ndi kusinthika kothamanga kwambiri kwa electro-optic pa chip kwa nthawi yoyamba.Mu 2018, Wei et al ndi Xu et al adakonza zopanga zanthawi zonse za 3D kutengeraLNmakhiristo, ndipo adazindikira mawonekedwe osasunthika amtengowo pogwiritsa ntchito zida za 3D periodic domain mu 2019.

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

Chip chophatikizika cha Photonic pa LN (kumanzere) ndi chithunzi chake (kumanja)

Kukula kwa chiphunzitso cha dielectric superlattice kwalimbikitsa kugwiritsa ntchitoLNkristalo ndi makristalo ena a ferroelectric mpaka kutalika kwatsopano, ndipo anawapatsakufunikira kogwiritsa ntchito ma lasers olimba-boma, chisa cha pafupipafupi, kuponderezana kwa laser pulse, mawonekedwe a matabwa ndi magwero owunikira olumikizidwa mukulankhulana kwachulukidwe.


Nthawi yotumiza: Feb-03-2022