LiF substrate
Kev piav qhia
LiF2 optical siv lead ua muaj kev ua tau zoo IR rau lub qhov rais thiab lub lens.
Cov khoom
| Qhov ceev (g / cm3) | 2.64 ib |
| Melting Point (℃) | 845 ib |
| Thermal conductivity | 11.3 Wm-1K-1 at 314K |
| Thermal Expansion | 37 x 10-6 / ℃ |
| Hardness (Mho) | 113 nrog 600g indenter (kg / mm2) |
| Tshwj xeeb kub muaj peev xwm | 1562 J / (kg.k) uas |
| Dielectric tsis tu ncua | 9.0 ntawm 100 Hz |
| Cov Hluas Modulus (E) | 6 4.79 gvp |
| Shear Modulus (G) | 55.14 GPA |
| Cov Modulus (K) | 62.03 Nws |
| Repture Modulus | 10.8 MPa |
| Elastic Coefficient | C11 = 112;C12 = 45.6;C44 = 63.2 |
LiF Substrate Definition
LiF (lithium fluoride) substrates xa mus rau cov ntaub ntawv siv los ua lub hauv paus lossis kev txhawb nqa rau ntau yam txheej txheem nyias nyias hauv kev ua haujlwm ntawm optics, photonics thiab microelectronics.LiF yog pob tshab thiab insulating siv lead ua zoo heev nrog lub dav bandgap.
LiF substrates feem ntau yog siv rau hauv daim ntawv thov nyias nyias vim lawv cov pob tshab zoo heev hauv cheeb tsam ultraviolet (UV) thiab siab tiv thaiv tshav kub thiab tshuaj lom neeg.Lawv yog tshwj xeeb tshaj yog haum rau daim ntaub ntawv xws li optical coatings, nyias zaj duab xis deposition, spectroscopy thiab electron microscopy.
LiF substrates feem ntau yog xaiv los ua cov khoom siv substrate vim tias lawv muaj qhov nqus qis hauv UV ntau thiab ua kom pom kev zoo rau qhov tseeb thiab meej ntsuas lossis kev soj ntsuam.Tsis tas li ntawd, LiF muaj kev ruaj ntseg zoo ntawm qhov kub thiab txias thiab tuaj yeem tiv taus ntau yam kev tso tawm xws li thermal evaporation, sputtering, thiab molecular beam epitaxy.
Cov khoom ntawm LiF substrates ua rau lawv tshwj xeeb rau kev siv hauv UV optics, lithography, thiab X-ray crystallography.Lawv cov kev ua haujlwm siab rau ib puag ncig thiab kev ruaj ntseg tshuaj ua rau lawv muaj ntau yam ntaub ntawv rau ntau yam kev tshawb fawb thiab kev siv tshuab.
Yam khoom
LiF (lithium fluoride) yog dav paub txog nws cov khoom zoo heev infrared (IR) ua cov khoom siv kho qhov muag rau qhov rais thiab lo ntsiab muag.Nov yog qee cov ntsiab lus tseem ceeb txog LiF2 optical crystals:
1. Infrared pob tshab: LiF2 nthuav tawm cov pob tshab zoo heev hauv cheeb tsam infrared, tshwj xeeb tshaj yog nyob rau nruab nrab-infrared thiab far-infrared wavelengths.Nws muaj peev xwm xa lub teeb nyob rau hauv lub wavelength ntawm kwv yees li 0.15 μm mus rau 7 μm, ua rau nws haum rau ntau yam infrared daim ntaub ntawv.
2. Tsawg absorption: LiF2 muaj qhov nqus dej tsawg hauv infrared spectrum, tso cai tsawg kawg nkaus ntawm lub teeb infrared los ntawm cov khoom siv.Qhov no ua kom muaj kev sib kis tau zoo thiab yog li kis tau zoo ntawm cov hluav taws xob infrared.
3. High refractive index: LiF2 muaj ib tug siab refractive index nyob rau hauv infrared wavelength ntau.Cov cuab yeej no tso cai rau kev tswj hwm thiab tswj xyuas lub teeb infrared, ua rau nws muaj txiaj ntsig zoo rau lub lens tsim uas yuav tsum tau tsom thiab khoov cov hluav taws xob infrared.
4. Wide bandgap: LiF2 muaj qhov dav bandgap txog 12.6 eV, uas txhais tau hais tias nws yuav tsum muaj lub zog loj los pib hloov hluav taws xob.Cov cuab yeej no pab txhawb rau nws cov pob tshab siab thiab nqus dej tsawg hauv cheeb tsam ultraviolet thiab infrared.
5. Thermal stability: LiF2 muaj thermal stability zoo, uas ua rau nws tuaj yeem tiv taus qhov kub thiab txias yam tsis muaj qhov ua tau zoo degradation.Qhov no ua rau nws tsim nyog rau cov ntawv thov uas cuam tshuam rau qhov kub siab, xws li thermal imaging systems lossis infrared sensors.
6. Tshuaj tiv thaiv: LiF2 tiv taus ntau yam tshuaj, nrog rau cov kua qaub thiab alkalis.Nws tsis hnov mob lossis degrade yooj yim nyob rau hauv lub xub ntiag ntawm cov tshuaj no, ua kom lub sij hawm ntev thiab kev ntseeg siab ntawm optics ua los ntawm LiF2.
7. Tsawg birefringence: LiF2 muaj tsawg birefringence, uas txhais tau hais tias nws tsis faib lub teeb rau hauv cov polarization sib txawv.Cov cuab yeej no yog qhov tseem ceeb hauv cov ntawv thov uas xav tau kev ywj pheej polarization, xws li hauv interferometry lossis lwm yam kev kho qhov muag pom tseeb.
Zuag qhia tag nrho, LiF2 tau txais txiaj ntsig zoo rau nws qhov kev ua tau zoo heev hauv infrared spectrum, ua rau nws muaj txiaj ntsig zoo rau lub qhov rais thiab lo ntsiab muag hauv ntau yam kev siv infrared.Nws kev sib xyaw ua ke ntawm cov pob tshab siab, tsis nqus dej, dav bandgap, thermal stability, tshuaj tsis kam, thiab qis birefringence pab txhawb rau nws cov kev ua tau zoo heev infrared.
