Gawo la LiNbO3
Kufotokozera
LiNbO3 Crystal ili ndi mawonekedwe apadera a electro-optical, piezoelectric, photoelastic ndi nonlinear optical properties.Iwo kwambiri birefringent.Amagwiritsidwa ntchito mu laserfrequency kuwirikiza kawiri, optics nonlinear, maselo Pockels, kuwala parametric oscillators, Q-switching zipangizo lasers, zina acousto-optic zipangizo, kuwala masiwichi kwa gigahertz mafunde, etc.
Katundu
| Njira Yakukula | Njira ya Czochralski |
| Kapangidwe ka Crystal | M3 |
| Unit Cell Constant | a=b=5.148Å c=13.863 Å |
| Melt Point (℃) | 1250 |
| Kachulukidwe (g/cm3） | 4.64 |
| Kuuma (Mho) | 5 |
| Kudzera mu Scope | 0.4-2.9um |
| Index of Refraction | no=2.286 ne=2.203 (632.8nm) |
| Nonlinear Coefficient | d33=34.45,d31=d15=5.95,d22=13.07 (pmv-1) |
| Denko Coefficient | γ13=8.6, γ22=3.4, γ33=30.8, γ51=28.0, γ22=6.00（pmv-1） |
| Kudzera mu Scope | 370-5000nm>68% (632.8nm) |
| Kuwonjezedwa kwa Matenthedwe | a11=15.4×10-6/k,a33=7.5×10-6/k |
Tanthauzo la Gawo Lapansi la LiNbO3:
Gawo laling'ono la LiNbO3 (lithium niobate) limatanthawuza chinthu cha crystalline chomwe chimagwiritsidwa ntchito ngati gawo lapansi pazida zosiyanasiyana zamagetsi ndi ma optoelectronic.Nazi mfundo zazikuluzikulu za magawo a LiNbO3:
1. Kapangidwe ka Crystal: LiNbO3 ndi kristalo ya ferroelectric yokhala ndi perovskite.Amakhala ndi maatomu a lithiamu (Li) ndi niobium (Nb) omwe amakonzedwa mumtundu wina wa kristalo.
2. Piezoelectric properties: LiNbO3 ili ndi mphamvu zamphamvu za piezoelectric, zomwe zikutanthauza kuti zimapanga magetsi a magetsi pamene zimakhudzidwa ndi zovuta zamakina komanso mosiyana.Katunduyu amapangitsa kuti ikhale yoyenera kugwiritsa ntchito monga zida zamawu acoustic, masensa, ma actuators, ndi zina.
3. Zithunzi zamagetsi: LiNbO3 ilinso ndi mawonekedwe abwino kwambiri a kuwala ndi electro-optic.Ili ndi chiwonetsero chapamwamba cha refractive, kuyamwa kopepuka kocheperako, ndikuwonetsa chodabwitsa chotchedwa electro-optic effect, pomwe index yake ya refractive ingasinthidwe ndi gawo lakunja lamagetsi.Izi zimapangitsa kuti zikhale zothandiza pazogwiritsa ntchito monga ma optical modulators, ma waveguides, ma frequency double, ndi zina zambiri.
4. Kuwonekera kwakukulu: LiNbO3 ili ndi mawonekedwe osiyanasiyana, omwe amalola kuti apereke kuwala mu mawonekedwe owoneka ndi pafupi ndi infrared.Itha kugwiritsidwa ntchito kupanga zida zowoneka bwino zomwe zimagwira ntchito m'magawo a wavelength awa.
5. Kukula kwa kristalo ndi mawonekedwe: Makristasi a LiNbO3 amatha kukulitsidwa pogwiritsa ntchito njira zosiyanasiyana monga Czochralski ndi njira zowonjezera zowonjezera zowonjezera.Itha kudulidwa ndikuwongolera mbali zosiyanasiyana za crystallographic kuti ipeze mawonekedwe owoneka bwino ndi magetsi ofunikira pakupangira zida.
6. Kukhazikika kwamakina ndi mankhwala: LiNbO3 ndi yokhazikika pamakina ndi makemikolo, kuipangitsa kupirira.
