Mabda'a shaqada ee laser semiconductor

Mabda'a shaqada eelaser semiconductor

Ugu horreyntii, shuruudaha halbeegga ee leysarka semiconductor ayaa la soo bandhigay, oo ay ku jiraan dhinacyada soo socda:
1. Waxqabadka sawir-qaadista: oo ay ku jiraan saamiga baabi'inta, xariiqda firfircoon iyo xuduudaha kale, xuduudahani waxay si toos ah u saameeyaan waxqabadka lasers semiconductor ee hababka isgaarsiinta.
2. Qiyaasaha qaabdhismeedka: sida cabbirka iftiinka iyo habaynta, qeexida dhamaadka soo saarista, cabbirka rakibida iyo cabbirka dulucda.
3. Wavelength: Mawjada dhererka ee laser semiconductor waa 650 ~ 1650nm, iyo saxnaanta waa sare.
4. Xaddiga hadda (Ith) iyo hadda shaqaynaysa (lop): Halbeegyadani waxay go'aamiyaan xaaladaha bilawga ah iyo xaaladda shaqada ee leysarka semiconductor.
5. Awoodda iyo danab: Iyadoo la cabbirayo awoodda, tamarta iyo hadda ee laser semiconductor ee shaqada, PV, PI iyo IV curves ayaa la sawiri karaa si loo fahmo sifooyinkooda shaqo.

Mabda'a shaqada
1. Shuruudaha kasbashada: Waxaa la sameeyay qaybinta roganta ee qaybinta kharash-qaadayaasha ee dhexdhexaadinta lasing (gobolka firfircoon) Semiconductor-ka, tamarta elektarooniga waxaa u taagan heerar tamar oo isdaba joog ah oo taxane ah. Sidaa darteed, tirada electrons ee hoose ee band conduction ee gobolka tamarta sare waa in ay aad uga badan tahay tirada godadka sare ee band valence ee gobolka tamarta hoose ee u dhexeeya labada gobol band tamarta si loo gaaro rogan lambarka qaybta. Tan waxaa lagu gaaraa iyada oo la adeegsanayo eex wanaagsan oo loo yaqaan 'homojunction' ama heterojunction oo lagu durayo sideyaasha lagama maarmaanka ah lakabka firfircoon si ay uga kiciso elektarooniga qaybta tamarta hoose ee tamarta tamarta sare. Marka tiro badan oo elektaroonik ah oo ku jira gobolka shacbi-rogmaday ay dib ula midoobaan godadka, qiiqa kiciyey ayaa dhaca.
2. Si dhab ahaantii loo helo shucaac kicin ah oo isku xidhan, shucaaca la kiciyay waa in lagu soo celiyaa dhowr jeer resonator-ka indhaha si uu u sameeyo oscillation laser, resonator laser waxaa sameeyay dusha sare ee dabiiciga ah ee kristal semiconductor sida muraayad, sida caadiga ah. oo lagu dhejiyay dhamaadka iftiinka oo leh filim dielectric multilayer milicsi sare leh, iyo dusha siman waxaa lagu dhejiyay filim muuqaal ah oo yaraaday. Daloolka Fp (Fabry-Perot cavity) laser semiconductor, godka FP si fudud ayaa loo dhisi karaa iyadoo la adeegsanayo diyaaradda jeexjeexa dabiiciga ah oo ku siman diyaaradda isku xirka pn ee crystal.
(3) Si loo sameeyo oscillation xasiloon, dhexdhexaadiyaha laysarka waa inuu awoodaa inuu bixiyo faa'iido weyn oo ku filan si uu u magdhabo khasaaraha indhaha ee uu keeno resonator-ka iyo khasaaraha ay sababto wax soo saarka laysarka ee ka soo baxa daloolka, oo si joogto ah u kordhiya beerta iftiinka ee godka. Tani waa in ay leedahay duritaan xoog leh oo hadda ku filan, taas oo ah, waxaa jira rogaal celin tiro qayb ku filan, heerka sare ee tirada qayb ka rogida, weynaanta faa'iidada, taas oo ah, looga baahan yahay waa in ay la kulmaan xaalad gaar ah hadda. Marka uu leysku gaaro marinka, iftiinka leh hirarka hirarka gaarka ah ayaa lagu dhawaaqi karaa godka oo la kordhiyo, ugu dambeyntiina wuxuu sameeyaa laysarka iyo soosaarka joogtada ah.

Shuruudaha waxqabadka
1. Beddelka bandwidth iyo heerka: leysarka semiconductor-ka iyo tignoolajiyada wax-ka-beddelka ah ayaa muhiim u ah isgaadhsiinta indhaha ee wireless-ka, iyo xajmiga xajmiga iyo qiyaasta waxay si toos ah u saameeyaan tayada isgaarsiinta. Laysarka gudaha lagu habeeyaylaser toos ah loo habeeyey) waxay ku habboon tahay qaybaha kala duwan ee isgaarsiinta fiber optic sababtoo ah gudbinta xawaaraha sare iyo qiimaha hoose.
2. Sifooyinka Spectral iyo sifooyinka wax-ka-beddelka: Semiconductor qaybiyay leysarka jawaab celinta (DFB laser) waxay noqdeen isha iftiinka muhiimka ah ee isgaarsiinta fiber optic-ga iyo isgaadhsiinta indhaha ee meel bannaan sababtoo ah sifooyinkooda muuqaal-muuqaaleed ee aad u wanaagsan iyo sifooyin beddelka.
3. Kharashka iyo wax-soo-saarka baaxadda: Laydhka Semiconductor waxay u baahan yihiin inay helaan faa'iidooyinka qiimaha jaban iyo wax soo saarka ballaaran si ay u daboolaan baahiyaha wax soo saarka iyo codsiyada baaxadda weyn.
4. Isticmaalka awoodda iyo isku halaynta: Xaaladaha codsiyada sida xarumaha xogta, lasers semiconductor waxay u baahan yihiin isticmaalka tamarta hoose iyo kalsoonida sare si loo hubiyo in hawlgalka xasilloon ee muddada dheer.