Er: YAG -An Excellent 2.94 Um Laser Crystal
Tlhaloso ea Sehlahisoa
Ketsahalo ena e hlahloba matšoao le mokhoa oa hoEr: YAGlaser skin resurfacing mme e totobatsa karolo ya sehlopha sa ditsebi ho lekola le ho alafa bakudi ba ileng ba feta Er:YAG laser resurfacing ya letlalo.
Er: YAG ke mofuta o motle oa 2.94 um laser crystal, o sebelisoang haholo tsamaisong ea bongaka ea laser le mafapha a mang.Er: YAGcrystal laser ke thepa ea bohlokoa ka ho fetisisa ea 3nm laser, 'me moepa o nang le bokhoni bo phahameng, o ka sebetsa mocheso oa mocheso oa kamore, laser wavelength e ka har'a sebaka sa sehlopha sa tšireletso ea mahlo a motho, joalo-joalo.
2.94 limEr: YAGlaser e 'nile ea sebelisoa haholo ho buuoa ka bongaka, botle ba letlalo, phekolo ea meno.Lasers e tsamaisoang ke Er:YAG (erbium substituted: yttrium aluminium garnet), e sebetsang ho 2.94 microns, banyalani ba likristale hantle ka metsing le 'meleng. Sena se bohlokoa haholo bakeng sa lits'ebetso tsa bongaka ba laser le bongaka ba meno. Sephetho sa Er:YAG se thusa ho beha leihlo maemo a tsoekere a mali ntle le bohloko, ha ho ntse ho fokotsa kotsi ea tšoaetso. E boetse e sebetsa bakeng sa kalafo ea laser ea lisele tse bonolo, joalo ka cosmetic resurfacing. E boetse e na le thuso bakeng sa ho phekola lisele tse thata tse kang enamel ea meno.
Er:YAG e natefeloa ke monyetla ho feta likristale tse ling tsa laser sebakeng sa 2.94 micron ka hore e sebelisa YAG joalo ka kristale e amohelang batho. Lintho tsa 'mele, tsa mocheso le tsa mahlo tsa YAG li tsebahala haholo ebile li utloisisoa hantle. Baqapi ba Laser le basebelisi ba ka sebelisa boiphihlelo ba bona bo tebileng ka lisebelisoa tsa laser tsa Nd:YAG ho fihlela ts'ebetso e phahameng ho tsoa ho 2.94 micron laser system ba sebelisa Er:YAG.
Thepa ea Motheo
| Coefficient ea Thermal Katoloso | 6.14 x 10-6 K-1 |
| Sebopeho sa Crystal | Likhubu |
| Thermal Diffusivity | 0.041 cm2 s-2 |
| Thermal Conductivity | 11.2 W m-1 K-1 |
| Mocheso o khethehileng (Cp) | 0,59 J g-1 K-1 |
| Thermal Shock Resistant | 800 W m-1 |
| Refractive Index @ 632.8 nm | 1.83 |
| dn/dT (Thermal Coefficient of Refractive Index) @ 1064nm | 7.8 10-6 K-1 |
| Boima ba Molek'hule | 593,7 dikgerama mol-1 |
| Melting Point | 1965°C |
| Botenya | 4.56 g cm-3 |
| MOHS boima | 8.25 |
| Modulus ea Bacha | 335 GPA |
| Matla a tšepe | 2Gpa |
| Lattice Constant | a=12.013 Å |
Tekheniki Parameters
| Dopant concentration | Er: ~ 50 ho% |
| Boitloaelo | [111] ka hare ho 5° |
| Phapang ea Wavefront | ≤0.125λ/inch(@1064nm) |
| Karolelano ea Phello | ≥25 dB |
| Melamu ea boholo | Diameter: 3–6mm, Bolelele: 50–120 mm |
| Ka kopo ea moreki | |
| Dimensional Tolerances | Bophara:+0.00/-0.05mm, |
| Bolelele: ± 0.5mm | |
| Moqomo Qetella | Qetella fatše ka 400 # Grit kapa e bentšitsoeng |
| Ho bapisa | ≤10" |
| Perpendicularity | ≤5′ |
| Bophatlalatsi | λ/10 @632.8nm |
| Boleng ba Sefahleho | 10-5(MIL-O-13830A) |
| Chamfer | 0.15±0.05mm |
| AR Coating Reflectivity | ≤ 0.25% (@2940nm) |
Thepa ea Optical le Spectral
| Phetoho ea Laser | 4I11/2 ho isa ho 4I13/2 |
| Laser Wavelengtha | 2940nm |
| Matla a Photon | 6.75×10-20J(@2940nm) |
| Emission Cross Section | 3 × 10-20 cm2 |
| Index ea Refraction | 1.79 @2940nm |
| Lihlopha tsa Pompo | 600~800 nm |
| Phetoho ea Laser | 4I11/2 ho isa ho 4I13/2 |
