Nd: YVO 4
Nd: YVO4 siv lead ua yog ib qho zoo tshaj plaws laser party siv lead ua tam sim no uas twb muaj lawm rau diode laser pumped khoom lub xeev lasers.Nws loj emission emission cross-section ntawm lasing wavelength, siab nqus coefficient thiab dav absorption bandwidth ntawm lub twj tso kua mis wavelength, siab laser induced kev puas tsuaj pib raws li zoo lub cev, kho qhov muag thiab txhua yam khoom ua rau Nd: YVO4 ib tug zoo siv lead ua rau siab zog, ruaj khov thiab tus nqi zoo diode pumped solid-state lasers.
Nta thiab Daim Ntawv Thov
★ Tsawg lasing pib thiab siab nqes hav efficiency
★ Tsawg nyob ntawm lub twj tso kua mis wavelength
★ Loj txhawb emission hla ntu ntawm lasing wavelength
★ Kev nqus tau siab tshaj qhov dav siv dav dav wavelength bandwidth
★ Optically uniaxial thiab loj birefringence emits polarized laser
★ Rau ib leeg-longitudinal-hom tso zis thiab compact tsim
★ Diode laser-pumped Nd: YVO4 compact laser thiab nws zaus-ob npaug ntsuab, liab lossis xiav laser yuav yog cov cuab yeej laser zoo tshaj plaws ntawm machining, cov khoom siv, spectroscopy, wafer tshuaj xyuas, teeb pom kev zoo, kev kuaj mob, laser luam ntawv thiab lwm yam dav dav. daim ntawv thov
Lub cev muaj zog
| Atomic ntom ntom | 1.37 x 1020 atoms/cm3 |
| Crystal Structure | Zircon Tetragonal, qhov chaw pab pawg D4h |
| a=b=7.12, c=6.29 | |
| Qhov ntom | 4.22 g / cm²3 |
| Mohs Hardness | iav zoo li, ~ 5 |
| Thermal Expansion Coefficient | ua 43x10-6/K, c=11.37x10-6/K |
Optical Properties
(feem ntau yog 1.1 atm% Nd: YVO4, a-cut crystals)
| Lasing Wavelengths | 914nm, 1064nm, 1342nm |
| Thermal Optical Coefficient | dna/dT = 8.5x10-6/K, dnc/dT = 3.0x10-6/K |
| Stimulated Emission Hla-Section | 25,0 x 10-19 cm2@1064nm |
| Fluorescent Lub Neej | 90us @ 808nm, (50us @ 808 nm rau 2atm% Nd doped) |
| Absorption Coefficient | 31.4cm ib-1@808nm |
| Absorption Ntev | 0.32 hli @ 808nm |
| Intrinsic Loss | Tsawg dua 0.1% cm-1@1064nm |
| Tau txais Bandwidth | 0.96nm (257 GHz) @ 1064nm |
| Polarized Laser Emission | p polarization, Parallel rau optic axis (c-axis) |
| Diode Pumped Optical rau Optical Efficiency | > 60% |
| Crystal Class | Positive uniaxial, no=na=nb, ne=nc, no=1.9573, ne=2.1652, @1064nm no=1.9721, ne=2.1858, @808nm no=2.0210, ne=2.2560, @532nm |
| Sellmeier Equation (rau cov ntshiab YVO4 muaju, λ hauv um) | no2=3.77834+0.069736/(λ2-0.04724)-0.0108133λ2 tsi ne2=4.59905+0.110534/(λ2-0.04813)-0.0122676λ2 |
Laser Properties
(Nd:YVO4 vs Nd:YAG)
| Laser Crystal | Nd doped | σ | α | τ | La | Pth | η |
| (atm%) | (x 10-19 cm 2) | (cm-1) | (cm-1) | (mm) | (mW) | (%) | |
| Nd: YVO4 (a-txiav) | 1.1 | 25 | 31.2 ib | 90 | 0.32 ib | 78 | 48.6 ib |
| 2 | 72.4 ib | 50 | 0.14 ib | ||||
| Nd: YVO4 (c-txiav) | 1.1 | 7 | 9.2 ib | 90 | 231 | 45.5 ib | |
| Nd: YAG | 0.85 ib | 6 | 7.1 | 230 | 1.41 ib | 115 | 38.6 ib |
Ntsiab Specifications
| Tsis muaj | Ntau yam lossis Tolerances |
| Nd Dopant Level | 0.1-5.0 ntawm m% |
| Scattering | Invisible, soj ntsuam nrog ib tug He-Ne laser |
| Orientation kam rau ua | ± 0.5 hli |
| Dimensional kam rau ua | ± 0.1 hli |
| Surface Quality (Scratch-Dig) | 10-5 |
| Clear Aperture | > 90% |
| Nto Flatness | < λ/10 @ 633 nm |
| Wavefront yuam kev | <λ/8 @ 633 nm |
| Parallelism | <10 arcsec |
| End-faces Configuration | Plano / Plano |
| Intrinsic Loss | <0.1% cm-1 |
| Txheej | AR 1064 & HT 808: R < 0.1% @ 1064nm, R < 5% @ 808nm HR 1064 & HT 808 & HR 532: R> 99.8% @ 1064nm, R <5% @ 808nm, r="">99% @ 532nm AR 1064: R <0.1% @ 1064nm |
Yog xav paub ntxiv txog lwm hom siv lead ua xws li Nonlinear Crystal [BBO (Beta-BaB2O4), Potassium Titanium Oxide Phosphate (KTiOPO4 lossis KTP)], Passive Q-Hloov Crystal [Cr: YAG (Cr4+: Y3Al5O12)], EO Crystal [ Lithium Niobate (LiNbO3), BBO siv lead ua], Birefringent Crystal [Yttrium Orthovanadate (YVO4), Calcite, Lithium Niobate (LiNbO3), Kub Kub Daim Ntawv BBO (α-BaB2O4), Tib Synthetic Crystal Quartz, Magnesium Fluoride (MgF2)] lossis tau txais ib nqe lus, thov koj xav tiv tauj peb.
