I-substrate ye-BaTiO3
Incazelo
BaTiO3amakristalu awodwa anezakhiwo ezinhle kakhulu ze-photorefractive, ukukhanya okuphezulu kwe-self-pumped phase conjugation kanye nokusebenza kahle kwamagagasi amabili (i-optical zoom) ekugcinweni kolwazi lwe-optical ngezinhlelo zokusebenza ezinkulu ezingase zibe khona, okuphinde kube yizinto ezibalulekile ze-substrate.
Izakhiwo
| Isakhiwo Sekristalu | I-Tetragonal ( 4m) : 9℃ <T <130.5 ℃a=3.99A, c= 4.04A , |
| Indlela Yokukhula | Ukukhula Kwesixazululo Esinembewu Ephezulu |
| I-Melting Point (℃) | 1600 |
| Ukuminyana (g/cm3) | 6.02 |
| I-Dielectric Constants | ea = 3700, ec = 135 (okungaboshiwe)ea = 2400, e c = 60 (eboshwe) |
| Inkomba ye-Refraction | 515 nm 633 nm 800 nmno 2.4921 2.4160 2.3681ne 2.4247 2.3630 2.3235 |
| I-Wavelength yokudlulisa | 0.45 ~ 6.30 mm |
| I-Electro Optic Coefficients | rT13 = 11.7 ?1.9 pm/V rT 33 =112 ?10 pm/VrT 42= 1920 ?180 pm/V |
| Ukubonakaliswa kwe-SPPC(ku-0 deg. ukusika) | 50 - 70 % ( ubuningi. 77%) ku-l = 515 nm50 - 80 % ( ubuningi: 86.8%) ku-l = 633 nm |
| I-Two-wave Mixing Coupling Constant | 10-40 cm-1 |
| Ukulahlekelwa Ukumuncwa | l: 515 nm 633 nm 800 nmA: 3.392cm-1 0.268cm-1 0.005cm-1 |
I-BaTiO3 Substrate Definition
I-BaTiO3 substrate isho i-crystalline substrate eyenziwe nge-compound barium titanate (BaTiO3).I-BaTiO3 iyimpahla ye-ferroelectric ene-perovskite crystal structure, okusho ukuthi inezinto eziyingqayizivele zikagesi, okwenza kube kuhle ezinhlobonhlobo zezicelo.
Ama-substrates e-BaTiO3 avame ukusetshenziswa emkhakheni wokufakwa kwefilimu emincane, futhi asetshenziselwa ngokukhethekile ukukhulisa amafilimu amancane e-epitaxial wezinto ezahlukene.Isakhiwo se-crystalline se-substrate sivumela ukuhlelwa okunembile kwama-athomu, okuvumela ukukhula kwamafilimu amancane asezingeni eliphezulu anezakhiwo ezinhle kakhulu ze-crystallographic.Izici ze-ferroelectric ze-BaTiO3 nazo zidlala indima ebalulekile ezinhlelweni ezifana nogesi kanye nemishini yenkumbulo.Ibonisa i-polarization ezenzakalelayo kanye nekhono lokushintsha phakathi kwezimo ezihlukene ze-polarization ngaphansi kwethonya lenkambu yangaphandle.
Lesi sakhiwo sisetshenziswa kubuchwepheshe obufana nememori engaguquki (inkumbulo ye-ferroelectric) kanye namadivayisi we-electro-optical.Ngaphezu kwalokho, ama-substrates e-BaTiO3 anezinhlelo zokusebenza emikhakheni eyahlukene efana nemishini ye-piezoelectric, izinzwa, ama-actuator, nezingxenye ze-microwave.Izici eziyingqayizivele zikagesi kanye nemishini ye-BaTiO3 inomthelela ekusebenzeni kwayo, okuyenza ifanele lezi zinhlelo zokusebenza.
