Aan Polarizing ahayn
Plate Beamsplitters
Beamsplitters waxaa badanaa loo kala saaraa si waafaqsan dhismahooda: cube ama saxan.Biamsplitter saxan ah waa nooc caan ah oo ka samaysan alwaax khafiif ah oo dhalada ah oo leh dahaarka indhaha ee loo habeeyay xagal 45° ah (AOI).Alwaaxyada saxanada caadiga ah waxay iftiinka dhacdada u qaybiyaan saami go'an oo ka madax banaan hirarka iftiinka iftiinka ama xaaladda dabaysha, halka alwaaxyada saxan-samaynta loo qorsheeyay inay si kala duwan ula dhaqmaan dawladaha S iyo P polarization.
Faa'iidooyinka alwaaxyada saxanku way yar yihiin nuugista chromatic, nuugista yar sababtoo ah dhalo yar, naqshado yaryar iyo kuwo fudud marka loo eego alwaaxyada cube.Khasaaraha ka imanayo beamsplitter saxan waa images rooxaan soo saaray isagoo iftiin ka iftiimay off of labada dusha muraayadda, barokaca lateral ee dogob ay sabab u tahay dhumucdiisuna ee galaaska, ay adag tahay in ay ku dhajiyaan iyada oo aan qallafsanaan, iyo dareenkooda iftiinka polaized.
Biamsplitters saxankeenu waxay leeyihiin dusha hore ee dahaarka taas oo go'aamisa saamiga kala qaybsanaanta alwaaxdu halka dusha dambe uu yahay mid la jeexjeexay oo AR la dahaadhay.Plate-ka Wedged Beamsplitter waxaa loogu talagalay inuu sameeyo koobiyo badan oo la yareeyey oo ah hal alwaax wax gelin ah.
Si loo yareeyo saameynta faragelinta aan loo baahnayn (tusaale, sawirada rooxaanta) ee ay keento is dhexgalka iftiinka ee ka soo baxaya dusha hore iyo gadaal ee muraayadaha indhaha, dhammaan alwaaxyada saxanka ah waxay leeyihiin daahan lidka-milicsiga (AR) oo lagu dhejiyay dusha dambe.Daahan waxaa loogu talagalay isla mawjada hawlgalka sida daahan alwaaxdii dusha hore.Ku dhawaad 4% shilka iftiinka ee 45° ee substrate aan dahaadhnayn ayaa ka muuqan doona;iyadoo la marinayo daahan AR dhinaca dambe ee alwaaxyada, boqolleydan waxaa la dhimay celcelis ahaan wax ka yar 0.5% mawjadda dhererka naqshadeynta ee daahan.Sifadan ka sokow, dusha dambe ee dhammaan alwaaxyada saxannada wareegsan waxay leeyihiin 30 arcmin wedge, sidaa darteed, jajabka iftiinka ee ka muuqda dusha sare ee AR-dahaarka ayaa kala duwanaan doona.
Paralight Optics waxay soo bandhigtaa alwaaxyo saxan ah oo la heli karo labadaba moodooyinka polarizing iyo non-polarizing.Jadwalka caadiga ah ee alwaaxyada saxanada aan dabaylaha ahayn waxay u kala qaybiyaan iftiinka dhacdada iyadoo loo eegayo saami la cayimay oo ka madax banaan hirarka iftiinka iftiinka, halka alwaaxyada saxanada polarizing loo qorsheeyay inay si kala duwan ula dhaqmaan gobolada S iyo P polarization.
Saxankeena aan polarizing ahaynbeamsplitterswaxaa sameeyay N-BK7, Fused Silica, Calcium Fluoride iyo Zinc Selenide oo daboolaya UV ilaa MIR dhererka hirarka.Waxaan sidoo kale bixinnaaalwaaxyada loo isticmaalo Nd:YAG mowjadaha dhererka (1064 nm iyo 532 nm).Wixii macluumaad ah ee ku saabsan dahaarka alwaaxyada N-BK7, fadlan ka eeg jaantusyada soo socda tixraacyadaada.
Astaamaha:
Agabka substrate:
N-BK7, RoHS waafaqsan
Xulashada dahaarka:
Dhammaan Dahaarka Dielectric
Waxqabadka indhaha:
Kala Qaybsanaanta Xasaasiyadda u leh Kala-duwanaanshaha Farshaxanka Dhacdada
Ikhtiyaarada Nakhshadda:
Naqshadaynta Gaarka ah ee la heli karo
Tilmaamaha Guud:
Tixraaca Sawirka
Aan-Polarizing Plate Beamsplitter
Biamsplitters saxan ka kooban yahay dhuuban, saxan galaas fidsan oo lagu dahaarkay dusha hore ee substrate-ka.Inta badan alwaaxyada saxanka ah waxay ka kooban yihiin daahan ka-hortagga milicsiga oogada labaad si ay meesha uga saaraan milicsiga Fresnel ee aan la rabin.Biamsplitters saxan ah ayaa inta badan loogu talagalay 45° AOI.Substrate-yada leh 1.5 index of refraction iyo 45° AOI, fogaanta shift ee laydhka (d) waa la qiyaasi karaa iyadoo la isticmaalayo isla'egta sawirka bidix.
Halbeegyada
Heerarka & Dulqaadyada
-
Nooca
Qoryaha saxanka ah ee aan polarizing ahayn
-
Dulqaadka cabbirka
+0.00/-0.20 mm
-
Dulqaadashada Dhumucda
+/- 0.20 mm
-
Tayada dusha sare (xoq-qod)
Caadi ahaan: 60-40 |Saxnimada: 40-20
-
Dhulka Dusha sare (Dhinaca Plano)
<λ/4 @ 632.8 nm halkii 25mm
-
Isbarbar yaac
< 1 arcmin
-
Chamfer
La ilaaliyo<0.5mm X 45°
-
Saamiga Kala-baxa (R/T) Dulqaadka
±5%, T=(Ts+Tp)/2, R=(Rs+Rp)/2
-
Nadiifi Aperture
> 90%
-
Dahaarka (AOI=45°)
Dahaar qayb ahaan milicsanaya oogada hore (hore), dahaarka AR ee dusha labaad (dhabarka).
-
Xadka Burburka
>5 J/cm2, 20ns, 20Hz, @1064nm
Garaafyada
Macluumaad dheeraad ah oo ku saabsan noocyada kale ee alwaaxyada saxannada ah sida alwaaxyada saxan jeexjeexan (5° xagal wedge si ay u kala soocaan milicsiga badan), alwaaxyada saxanka dichroic (muujinaya guryaha laydhka ee ku tiirsan mawjadaha dhererka, oo ay ku jiraan marin dheer, gaaban gaaban, kooxo badan, iwm.), alwaaxyada saxan-dabiiciga ah, pellicle (iyada oo aan lahayn aberration chromatic & sawirada rooxaanta, bixinta guryaha gudbinta wavefront oo aad u fiican iyo inay yihiin kuwa ugu faa'iidada badan codsiyada interferometric) ama alwaaxyada dhibcaha polka (waxqabadkoodu kuma tiirsana xagal) labadaba kuwaas oo dabooli kara kala duwanaanshaha hirarka dhererka ballaaran, fadlan la xiriir anaga wixii faahfaahin ah.
50:50 Aan-Polarizing Plate Beamsplitter @450-650nm at 45° AOI
50:50 Aan-Polarizing Plate Beamsplitter @ 650-900nm at 45° AOI
