Er: YAG –An Excellent 2.94 Um Laser Crystal
Incazelo Yomkhiqizo
Lo msebenzi ubuyekeza izinkomba nezindlelaEr: YAGi-laser skin resurfacing futhi igqamisa indima yethimba labachwepheshe ekuhloleni nasekwelapheni iziguli ezithola i-Er:YAG laser resurfacing yesikhumba.
Er: I-YAG iwuhlobo oluhle kakhulu lwe-2.94 um laser crystal, esetshenziswa kabanzi ohlelweni lwezokwelapha lwe-laser nakweminye imikhakha.Er: YAGI-crystal laser iyinto ebaluleke kakhulu ye-laser ye-3nm, futhi umthambeko osebenza kahle kakhulu, ungasebenza ekamelweni lokushisa i-laser, i-laser wavelength ingaphakathi kobubanzi bebhande lokuphepha kwamehlo omuntu, njll.
2.94 umEr: YAGi-laser isetshenziswe kakhulu ekuhlinzeni emkhakheni wezokwelapha, ebuhleni besikhumba, ekwelapheni amazinyo.Ama-Lasers anikwa amandla yi-Er:YAG (i-erbium esikhundleni: i-yttrium aluminium garnet), esebenza kuma-microns angu-2.94, amakristalu abhangqwana emanzini nasoketshezini lomzimba. Lokhu kuwusizo ikakhulukazi ekusetshenzisweni emkhakheni wemithi ye-laser kanye nodokotela bamazinyo. Umphumela we-Er:YAG unika amandla ukuqapha okungenabuhlungu kwamazinga kashukela egazini, kuyilapho kunciphisa ngokuphephile ingozi yokutheleleka. Iphinde isebenze ekwelashweni nge-laser kwezicubu ezithambile, njengokuphinda kufakwe i-cosmetic. Iwusizo ngokufanayo ekwelapheni izicubu eziqinile ezifana noqweqwe lwamazinyo.
Er:YAG ijabulela inzuzo ngaphezu kwamanye amakristalu e-laser ebangeni lama-micron angu-2.94 ngoba isebenzisa i-YAG njengomsingathi wekristalu. Izici ezingokomzimba, ezishisayo nezokubona ze-YAG zaziwa kabanzi futhi ziqondwa kahle. Abaklami belaser nabaqhubi bangasebenzisa ulwazi lwabo olujulile ngezinhlelo ze-laser ze-Nd:YAG ukuze bathole ukusebenza okuphakeme kusukela kumasistimu we-laser micron angu-2.94 esebenzisa i-Er:YAG.
Izakhiwo Eziyisisekelo
| I-Coefficient ye-Thermal Ukunwetshwa | 6.14 x 10-6 K-1 |
| Isakhiwo Sekristalu | I-Cubic |
| I-Thermal Diffusivity | 0.041 cm2 s-2 |
| I-Thermal Conductivity | 11.2 W m-1 K-1 |
| Ukushisa Okuthile (Cp) | 0.59 J g-1 K-1 |
| I-Thermal Shock Resistant | 800 W m-1 |
| I-Refractive Index @ 632.8 nm | 1.83 |
| dn/dT (Thermal Coefficient of Refractive Index) @ 1064nm | 7.8 10-6 K-1 |
| Isisindo samangqamuzana | 593.7 g i-mol-1 |
| I-Melting Point | 1965°C |
| Ukuminyana | 4.56 g cm-3 |
| Ukuqina kwe-MOHS | 8.25 |
| I-Modulus Encane | 335 gp |
| Amandla Okuqina | 2 gpa |
| I-Lattice Constant | a=12.013 Å |
Imingcele Yezobuchwepheshe
| I-Dopant concentration | Er: ~50 ngo% |
| Ukuqondisa | [111] phakathi kuka-5° |
| I-Wavefront Distortion | ≤0.125λ/inch(@1064nm) |
| Isilinganiso Sokuqothula | ≥25 dB |
| Osayizi Benduku | Ububanzi: 3–6mm, Ubude:50–120 mm |
| Ngesicelo sekhasimende | |
| I-Dimensional Tolerances | Ububanzi:+0.00/-0.05mm, |
| Ubude: ± 0.5mm | |
| Umphongolo Uphelile | Ground Qeda nge-400# Grit noma epholishiwe |
| Ukufana | ≤10" |
| I-Perpendicularity | ≤5′ |
| Ukucaba | λ/10 @632.8nm |
| Ikhwalithi Yobuso | 10-5(MIL-O-13830A) |
| I-Chamfer | 0.15±0.05mm |
| I-AR Coating Reflectivity | ≤ 0.25% (@2940nm) |
I-Optical And Spectral Properties
| I-Laser Transition | 4I11/2 kuya ku-4I13/2 |
| I-Laser Wavelengtha | 2940nm |
| I-Photon Amandla | 6.75×10-20J(@2940nm) |
| I-Emission Cross Section | 3 × 10-20 cm2 |
| Inkomba ye-Refraction | 1.79 @2940nm |
| I-Pump Bands | 600 ~ 800 nm |
| I-Laser Transition | 4I11/2 kuya ku-4I13/2 |
