Nd: YVO4
Nd: YVO4 kristal minangka salah sawijining kristal inang laser sing paling efisien sing saiki ana kanggo laser dioda sing dipompa laser solid state. Sawijining salib-bagean emisi stimulus gedhe ing dawa gelombang lasing, koefisien panyerepan dhuwur lan bandwidth panyerepan sudhut ing dawa gelombang pump, laser dhuwur ambang karusakan induced uga fisik apik, optik lan mechanical situs nggawe Nd: YVO4 kristal banget kanggo daya dhuwur, stabil lan dioda dioda sing dipompa laser solid-state.
Fitur lan Aplikasi
★ batesan lasing Low lan efficiency slope dhuwur
★ katergantungan Low ing dawa gelombang pump
★ Gedhe stimulus emisi salib-bagean ing lasing dawa gelombang
★ panyerepan High liwat jembaré pumping bandwidth dawa gelombang
★ Optik uniaxial lan birefringence gedhe emits polarized laser
★ Kanggo output Single-longitudinal-mode lan desain kompak
★ Diode laser-pumped Nd: YVO4 laser kompak lan frekuensi-pindho ijo, abang utawa biru laser bakal dadi pribadi laser becik saka mesin, Processing materi, spektroskopi, pengawasan wafer, nuduhake cahya, diagnostik medical, printing laser lan liyane paling nyebar. aplikasi
Sifat Fisik
| Kapadhetan Atom | ~1,37x1020 atom/cm3 |
| Struktur Kristal | Zirkon Tetragonal, klompok ruang D4h |
| a=b=7,12, c=6,29 | |
| Kapadhetan | 4,22 g/cm3 |
| Kekerasan Mohs | Kaya kaca, ~5 |
| Koefisien Ekspansi Termal | a=4,43x10-6/K, c=11,37x10-6/K |
Sifat Optik
(biasane kanggo 1,1 atm% Nd:YVO4, kristal a-cut)
| Panjang Gelombang Lasing | 914nm, 1064nm, 1342nm |
| Koefisien Optik Termal | dna/dT=8.5x10-6/K, dnc/dT=3.0x10-6/K |
| Stimulasi Emisi Cross-Section | 25,0x10-19cm2@1064nm |
| Fluoresensi Urip | 90us @808nm, (50us @808 nm kanggo 2atm% Nd doped) |
| Koefisien panyerepan | 31,4 cm-1@808nm |
| Dawane panyerepan | 0,32 mm @808nm |
| Mundhut Intrinsik | Kurang saka 0,1% cm-1@1064nm |
| Entuk Bandwidth | 0,96 nm (257 GHz) @1064nm |
| Emisi Laser Polarisasi | p polarisasi, Paralel menyang sumbu optik (sumbu c) |
| Diode Pumped Optical kanggo Optical Efficiency | > 60% |
| Kelas Kristal | Uniaxial positif, no=na=nb, ne=nc, ora = 1,9573, ne = 2,1652, @1064nm ora = 1,9721, ne = 2,1858, @808nm ora = 2,0210, ne = 2,2560, @532nm |
| Persamaan Sellmeier (kanggo kristal YVO4 murni, λ ing um) | no2=3.77834+0.069736/(λ2-0.04724)-0.0108133λ2 ne2=4,59905+0,110534/(λ2-0,04813)-0,0122676λ2 |
Properti Laser
(Nd:YVO4 vs Nd:YAG)
| Kristal Laser Kab | Nd doped | σ | α | τ | La | Pth | η |
| (atm%) | (x10-19cm2) | (cm-1) | (cm-1) | (mm) | (mW) | (%) | |
| Nd:YVO4(a-cut) | 1.1 | 25 | 31.2 | 90 | 0.32 | 78 | 48.6 |
| 2 | 72.4 | 50 | 0.14 | ||||
| Nd:YVO4(c-cut) | 1.1 | 7 | 9.2 | 90 | 231 | 45.5 | |
| Nd: YAG | 0.85 | 6 | 7.1 | 230 | 1.41 | 115 | 38.6 |
Spesifikasi Utama
| Paramèter | Range utawa Toleransi |
| Nd Dopant Level | 0,1-5,0 ing m% |
| buyar | Ora katon, diselidiki nganggo laser He-Ne |
| Toleransi Orientasi | ± 0,5 deg |
| Toleransi dimensi | ± 0,1 mm |
| Kualitas Permukaan (Scratch-Dig) | 10-5 |
| Aperture Clear | > 90% |
| Flatness lumahing | <λ/10 @ 633 nm |
| Kesalahan Wavefront | <λ/8 @ 633 nm |
| Paralelisme | <10 arcsec |
| Konfigurasi mburi-pasuryan | Plano / Plano |
| Mundhut Intrinsik | <0,1% cm-1 |
| Lapisan | 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 |
Kanggo informasi luwih lengkap babagan jinis kristal liyane kayata Kristal Nonlinier [BBO (Beta-BaB2O4), Potassium Titanium Oxide Phosphate (KTiOPO4 utawa KTP)], Kristal Q-Switch Pasif [Cr: YAG (Cr4+:Y3Al5O12)], Kristal EO [ Lithium Niobate (LiNbO3), kristal BBO], Kristal Birefringent [Yttrium Orthovanadate (YVO4), Kalsit, Lithium Niobate (LiNbO3), Bentuk Suhu Tinggi BBO (α-BaB2O4), Kristal Kuarsa Sintetis Tunggal, Magnesium Fluoride (MgF2)] utawa entuk kutipan, please aran gratis kanggo hubungi kita.
