Muraayadaha Muraayadda ee Chalcogenide ee la qaabeeyey

Muraayadaha infrared-ka ee dhaqameed waa la shiiday, la safeeyey ama dheeman ayaa loo rogay si ay u sameeyaan dusha sare, si kale haddii loo dhigo: iyada oo loo marayo "soo-saarista qabow". In kasta oo muraayadda infrared-ka sidoo kale lagu samayn karo "soo-saarista kulaylka", halkan waxaan ku haynaa muraayadda infrared-ka ee la qaabeeyey oo laga sameeyay walxo galaas ah oo chalcogenide ah. Qaabaynta muraayadda ayaa si gaar ah ugu habboon wax soo saarka tiro badan sababtoo ah qiimaha wax soo saarka ee muraayadda kasta waxaa lagu xakamayn karaa heer aad u hooseeya. Muraayadaha la qaabeeyey waxay sidoo kale leeyihiin isku dheelitirnaan wanaagsan oo badeecadeed oo ku saabsan wax soo saarka tirada badan, taas oo hubinaysa isku halaynta wanaagsan ee nidaamyada infrared-ka.
Muraayadda Chalcogenide ma aha mid ka mid ah laakiin waa taxane galaas ah oo u eg walxo aan qaab lahayn oo ku dhex jira xarigga infrared-ka. Waxaan dooran karnaa oo keliya walxaha galaaska chalcogeni ee ku jira qaabaynta muraayadaha infrared-ka sababtoo ah dhibcahooda dhalaalka hooseeya marka la barbar dhigo walxaha kale ee infrared-ka.
Muraayadda Chalcogenide waxay leedahay heer gudbin wanaagsan (>60%) oo u dhexeeya 2-12 micron, tusmada refraction-ka hooseeya (2.4-2.8@11micron), isbeddel heerkul oo hooseeya oo ku yimaada tusmada refractive-ka iyo kala firdhinta hoose. Waxay leeyihiin sifooyin farsamo iyo muuqaal oo la mid ah germanium, taas oo ka dhigaysa inay si fiican ugu habboon yihiin isticmaalka infrared-ka, gaar ahaan sixitaanka midabka iyadoo la adeegsanayo muraayadda germanium ee nidaamka indhaha.
Si ka duwan germanium oo u baahan in la qodo oo aan lahayn sahay xaddidan, walxaha galaaska chalcogenide waa kuwo macmal ah. Qiimahoodu waa mid deggan oo la aqbali karo. Muraayadaha laga sameeyay galaaska chalcogenide waxay noqon karaan beddel wanaagsan oo muraayadda germanium ah oo ay door muhiim ah ka ciyaari lahaayeen nidaamyada cusub ee infrared-ka ee la naqshadeeyay.

Muraayadda Infrared-ka ee Wavelength waxay bixin kartaa muraayadda infrared-ka ee galaaska chalcogenide ee la qaabeeyey oo leh dusha sare ee aspheric iyo diffractive. Muraayadda galaaska ee Chalcogenide ayaa ugu caansan nidaamyada ka shaqeeya xarigga infrared-ka ee 3-5 micron ama 8-12 micron, gudbinta celcelis ahaan ka badan 97.5% oo leh dahaadh ka-hortagga milicsiga (dahaarka AR). Dahaarka kaarboon ee u eg dheeman (dahaarka DLC) ama dahaarka waara ee sare (dahaarka HD) ayaa sidoo kale lagu dabaqi karaa muraayadda infrared-ka galaaska chalcogenide si loo siiyo ilaalin dheeraad ah oo ka dhan ah xoqidda iyo saameynta.