Daaqadaha brewster waxaa caadi ahaan loo isticmaalaa sidii polarizers gudaha godadka laysarka.Marka la dhigo xagasha Brewster (55° 32′ at 633 nm), qaybta P-polarized ee iftiinka waxay ka gudbi doontaa daaqada iyada oo aan wax khasaare ahi jirin, halka qayb ka mid ah qaybta S-polarized ay ka muuqan doonto daaqadda Brewster.Marka lagu isticmaalo godka laysarka, daaqada Brewster waxay asal ahaan u shaqeysaa sidii polarizer.
Xagasha Brewster waxaa bixiya
tan (θB) = nt/ni
θBwaa xagasha Brewster
niwaa index of refraction ee dhexdhexaadka ah dhacdada, taas oo ah 1.0003 hawada
ntwaa tusaha dib-u-celinta dhexdhexaadinta gudbinta, taas oo ah 1.45701 ee silica isku dhafan ee 633 nm
Paralight Optics waxay bixisaa daaqadaha Brewster laga soo sameeyay N-BK7 (Grade A) ama UV fused silica, taas oo soo bandhigaysa ku dhawaad fluorescence laser-ku-abuuray (sida lagu qiyaaso 193 nm), taasoo ka dhigaysa doorasho ku habboon codsiyada UV ilaa IR u dhow. .Fadlan eeg garaafka soo socda oo muujinaya milicsiga S- iyo P-polarization labadaba UV silica fused at 633 nm tixraacyadaada.
N-BK7 ama UV Substrate-ka Silica Fused
Xadka Burburka Sareeya (aan dahaaran)
Luminta Milicsiga eber ee P-Polarization, 20% Milicsiga S-Polarization
Ku habboon godadka Laser-ka
Qalabka Substrate-ka
N-BK7 (Darajada A), UV silica isku dhafan
Nooca
Daaqad leyser ah oo fidsan ama ka go'an (wareeg, afar gees, iwm.)
Cabbirka
Gaar ahaan loo sameeyay
Dulqaadka cabbirka
Caadi ahaan: +0.00/-0.20mm |Saxnimada: +0.00/-0.10mm
Dhumucda
Gaar ahaan loo sameeyay
Dulqaadashada Dhumucda
Caadi ahaan: +/- 0.20mm |Saxnimada: +/- 0.10mm
Nadiifi Aperture
> 90%
Isbarbar yaac
Saxsanaanta: ≤10 arcs |Saxnaanta Sare: ≤5 arc
Tayada dusha sare (Xog - Qod)
Saxsanaanta: 60 - 40 |Saxnimada Sare: 20-10
Dhulka oogada sare @ 633 nm
Saxsanaanta: ≤ λ/10 |Saxnimada sare: ≤ λ/20
Khaladka Wavefront ee la gudbiyay
≤ λ/10 @ 632.8 nm
Chamfer
La ilaaliyo:<0.5mm x 45°
Dahaarka
Dahaar la'aan
Mawjada dhererka
185 - 2100 nm
Heerka Burburka Laser-ka
>20 J/cm2(20ns, 20Hz, @1064nm)