ZnGeP2 - Ngwa anya infrared na-adịghị adị
Nkọwa ngwaahịa
N'ihi ihe ndị a pụrụ iche, a maara ya dị ka otu n'ime ihe ndị kachasị mma maka ngwa ngwa anya na-adịghị. ZnGeP2 nwere ike ịmepụta 3-5 μm na-aga n'ihu na-emegharị laser a na-etinye site na teknụzụ parametric oscillation (OPO). Lasers, na-arụ ọrụ na windo nnyefe ikuku nke 3-5 μm dị oke mkpa maka ọtụtụ ngwa, dị ka ọnụọgụ infrared, nlekota kemịkalụ, ngwa ahụike, na nhụta anya.
Anyị nwere ike ịnye ZnGeP2 ngwa anya dị elu nke nwere ọnụọgụ absorption dị oke ala α <0.05 cm-1 (na mgbapụta wavelengths 2.0-2.1 µm), nke enwere ike iji mee ka laser tunable infrared na-arụ ọrụ dị elu site na usoro OPO ma ọ bụ OPA.
Ike anyị
Emepụtara teknụzụ Ubi Ọkụ na-agbanwe agbanwe ma tinye ya n'ọrụ iji mepụta ZnGeP2 polycrystalline. Site na teknụzụ a, ihe karịrị 500g dị ọcha ZnGeP2 polycrystalline nwere nnukwu ọka ka ejikọtala n'otu ọsọ.
Usoro Gradient Freeze jikọtara ya na Teknụzụ Necking Directional (nke nwere ike wedata njupụta dislocation nke ọma) etinyerela nke ọma na uto ZnGeP2 dị elu.
ZnGeP2 dị elu nke kilogram nwere dayameta kacha ukwuu n'ụwa (Φ55 mm) etoola nke ọma site na usoro Vertical Gradient Freeze.
The elu roughness na flatness nke kristal ngwaọrụ, ihe na-erughị 5Å na 1/8λ n'otu n'otu, e nwetara site anyị ọnyà ezi n'elu ọgwụgwọ technology.
Ntugharị akụkụ ikpeazụ nke ngwaọrụ kristal bụ ihe na-erughị ogo 0.1 n'ihi itinye ntuzi aka ziri ezi na usoro ịkpụchasị mma.
E nwetala ngwaọrụ ndị nwere arụmọrụ dị mma n'ihi ịdị elu nke kristal na teknụzụ nhazi kristal dị elu (Emepụtara laser n'etiti 3-5μm n'etiti infrared na ngbanwe arụmọrụ karịa 56% mgbe ọkụ 2μm na-agbapụta ya. isi mmalite).
Otu nyocha anyị, site na nyocha na-aga n'ihu na teknụzụ teknụzụ na-aga n'ihu, ejirila teknụzụ njikọ nke ZnGeP2 polycrystalline dị ọcha nke ọma, teknụzụ uto nke nnukwu nha na ogo ZnGeP2 dị elu na nghazi kristal na teknụzụ nhazi dị elu; nwere ike ịnye ngwaọrụ ZnGeP2 na kristal mbụ toro dị ka toro n'ọtụtụ n'ịdị n'otu dị elu, ọnụọgụ nnabata dị ala, nkwụsi ike dị mma, yana arụmọrụ ntụgharị dị elu. N'otu oge ahụ, anyị eguzobela otu usoro nyocha ọrụ kristal nke na-eme ka anyị nwee ike ịnye ọrụ nyocha ọrụ kristal maka ndị ahịa.
Ngwa
● Nke abụọ, nke atọ, na anọ harmonic ọgbọ nke CO2-laser
● Ọgbọ parametric ngwa anya nwere mgbapụta na ogologo wavelength nke 2.0 µm
● Ọgbọ nke abụọ harmonic nke CO-laser
● Na-emepụta radieshon na-ejikọta ọnụ na submillimeterrange site na 70.0 µm ruo 1000 µm
● Ọgbọ nke jikọtara ugboro nke CO2- na CO-laser radieshon na ndị ọzọ lasers na-arụ ọrụ na crystal nghọta mpaghara.
Njirimara ndị bụ isi
| Chemical | ZnGeP2 |
| Crystal Symmetry na klaasị | tetragonal, -42m |
| Parameters Lattice | a = 5.467 Å c = 12.736 Å |
| Njupụta | 4.162 g/cm3 |
| Mohs ike | 5.5 |
| Klas ngwa anya | Uniaxial dị mma |
| Oke nnyefe bara uru | 2.0mm - 10.0 nkeji |
| Nrụpụta okpomọkụ @T= 293K | 35 W/m∙K (⊥c) 36 W/m∙K (∥ c) |
| Mgbasawanye okpomọkụ @T = 293 K ruo 573 K | 17.5 x 106 K-1 (⊥c) 15.9 x 106 K-1 (∥ c) |
Nka nka
| Nkwenye dayameta | +0/-0.1 mm |
| Ogologo ndidi | ± 0.1 mm |
| Nkwenye nghazi | <30 nkeji |
| Ogo elu | 20-10 SD |
| Ịdị nro | <λ/4@632.8 nm |
| Myirịta | <30 nkeji |
| Perpendicularity | <5 arcmin |
| Chamfer | <0.1 mm x 45° |
| Oke nghọta | 0.75 - 12.0 ?m |
| Ọnụọgụ na-adịghị adị | d36 = 68.9 pm/V (na 10.6μm) d36 = 75.0 pm/V (na 9.6 μm) |
| Oke mmebi | 60 MW/cm2 ,150ns@10.6μm |
