Semiconductor keebkii: nooc oo qalab, mabda'a qalliinka, isticmaalka

laser Semiconductor waa matoorrada galmada Semiconductor ku salaysan dhexdhexaad firfircoon, Gudaheedana waxaa codbaahiyaha si indhaha by hawada u shidan loo abuuray ee kala guurka ah inta u dhaxaysa heerarka tamarta galmada at uruuray sare ee sidayaal lacag oo lacag la'aan ah aagga.

laser Semiconductor: mabda'a hawlgalka

Sida caadiga ah, inta badan ee electrons yaal heerka valency ah. Inta lagu guda jiro tamarta photon hab aad iyo aad u farqiga band tamarta, Semiconductor ah, electrons soo galay gobolka excitation, oo intuu kala jejebiyey aagga Reebay, guurayso zone ah oo lacag la'aan ah, xoogga ay ku laayeen hoose. Isla, god sameeyay heerka valence ahaa, anigoo in ay xadka sare. electrons ee aagga free recombine rito, radiating tamarta loo siman yahay si tamarta ee aaga dillaac ah, oo ah qaab photons. Recombination la sii hagaajin karaa by photons heerka tamarta ku filan. description tiro u dhiganta shaqada Fermi qaybinta.

qalab

qalab laser Semiconductor waa diode laser gareeyeen electrons tamarta iyo godad ee degaanka p-n-guurka - dhibcood ee xiriir la p- ee Semiconductor tabinta iyo nooca n-. Intaas waxaa sii dheer, waxaa jira laser Semiconductor talooyin tamarta indhaha kaas oo ku jirase aad waxaa la aasaasay by nuugista ee photons of laser Cascade iftiinka iyo galmada, kaas oo ku salaysan yihiin ay ka zones gudahood.

Qaab-dhismeedka

xeryahooda caadiga ah loo isticmaalo in laser Semiconductor iyo aaladaha kale ee optoelectronic, sida soo socota:

• arsenide gallium;
• phosphide gallium;
• nitride gallium;
• phosphide indium;
• arsenide gallium indium;
• gallium arsenide aluminium;
• nitride gallium-indium-gallium;
• phosphide, gallium-indium.

Milanello

xeryahooda Kuwani - semiconductors toos-farqiga. Indirect- (Silicon) ma iftiin xoog iyo hufnaan ku filan ma dhaadheer. Milanello ee shucaaca ah ee laser diode ku xiran tahay tamarta ee tamarta photon ku dhowaado farqiga band ee xarunta gaar ah. The gap band tamarta xeryahooda Semiconductor 3- iyo 4-qayb laga yaabaa in si joogto ah kala duwan ka badan ballaaran oo kala duwan. At AlGaAs = Al _x Ga _1-x Sida, tusaale ahaan, sii kordhaya content aluminium (kordhay x) ayaa saamaynta korodhka in farqiga band tamarta.

Inkastoo laser Semiconductor ugu badan ee ka shaqeeya qaybta u dhow infrared of spectrum ah, qaar ka mid ah dhaadheer cas (gallium phosphide indium), buluug ama guduud (nitride gallium) midabo. Celceliska laser infrared Semiconductor (selenide hogaanka) iyo laser Cascade galmada.

semiconductors organic

Ka sokow xeryahooda ka imanba kor ku xusan waxaa loo isticmaali karaa iyo organic. technology Haboon weli ka yar yahay horumarinta, laakiin horumarka uu ballan qaaday in si weyn u la yareeyo kharashka wax soo saarka ee laser. Ilaa hadda, oo kaliya horumariyo laser organic talooyin tamarta indhaha iyo bamka korontada-waxqabadka sare oo aan weli la gaaray.

noocyada

By hannaanka ah laser Semiconductor la koobin kala duwan iyo qiimaha codsiga.

dioska- laser Small soo saari dogob ah oo tayo sare leh shucaaca si farsamaysan kuwaas oo awood safafka ka dhowr boqol oo shan boqol oo milliwatts. chip diode laser waa waslad khafiifa qaab, oo u adeegta sida waveguide ah, tan iyo shucaaca ku koobnayn meel yar. Crystal doped iyadoo labada dhinac si ay u abuuraan a pn-guurka ah aag aad u ballaaran. Darafyadiisa safeeyey abuuro resonator ah indhaha of a Fabry - interferometer Perot. Photon marayay saabka in ay keeni shucaaca recombination badin doonaa, oo bilaaban doona jiilka. Waxay waxaa loo isticmaalaa in pointer laser, CD- iyo DVD-ciyaartoy, iyo sidoo kale fiber optic.

laser awood Low iyo laser adag la saabka dibadda ah u dhalin karsado gaaban waafajinta laga yaabaa in dhacdooyinka.

laser Semiconductor la saabka dibadda ka kooban diode laser ah, kuwaas oo kaalin ku kooban of faa'iido u sii laser-resonator dhexdhexaad ah. Awood u wavelengths beddelo oo ay leeyihiin Koox warshadu hawada cidhiidhi ah.

laser duro waa gobolka Semiconductor ee shucaaca ee band ballaaran, ay abuuri karaan awood dogob tayo hooseeyo dhowr Watts. Waxay ka kooban tahay lakab khafiif ah oo firfircoon ee ikhtiyaarkooda u dhexeeya p- iyo n-lakabka, la xirrira heterojunction a double. farsamo ee gabbasho iftiinka jihada lateral waa la waayay, taas oo keenta in ellipticity dogob sare iyo hadda marinka la aqbali karin sare.

Arrays diode awood leh, oo ka kooban diyaariyeen ah ee dioska-, broadband, oo awood u leh soo saarista dogob awoodda tayo xumo ee tobanaan watts.

Xoogbadane Arrays laba dhinac-cabbir ah dioska- abuuri karaan awood ah boqolaal kun oo watts.

Oogada-emitting laser (VCSEL) emitting tayada dogob saarka iftiin dhowr milliwatts dadab iyo in ay saxanka. On dusha shucaaca muraayada resonator ah waxaa laga codsadaa foomka of layers in dynes ¼ ruxruxo la kala duwan indices Refractive. On hal qori oo ah waxaa la samayn karaa dhowr boqol oo laser, taas oo kor u furmay suurtagalnimada ee wax soo saarka mass.

C VECSEL laser aqbasho tamarta indhaha iyo resonator dibadda ah oo awood u leh guud ahaan dogob awoodda tayo fiican leh dhowr watts ee quful hab a.

Work laser Semiconductor nooca Cascade galmada ku salaysan gudubka guutooyin gudahood (in la barbardhigo interband ah). qalabka dhaadheer ee gobolka dhexe ee spectrum ee infrared, mararka qaar kala duwan terahertz ah. Waxay waxaa loo isticmaalaa, tusaale ahaan, sida analyzers gaaska.

Semiconductor laser: codsiga iyo dhinacyada ugu muhiimsan ee

laser diode High-awood leh aadka koronto gareeyeen at voltages dhexdhexaad ah waxaa loo isticmaalaa sida hab aadka wax ku ool ah qeybinayay tamarta laser adke.

laser Semiconductor shaqeyn karaan in tiro balaadhan oo ah mawjadaha in ka mid ah la arki karo, ka qeyb infrared iyo dhexe ee u dhow infrared of spectrum ah. qalabka abuuray in sidoo kale la beddelo inta jeer izducheniya.

dioska- Laser degdeg ah u wareegi kartaa oo modulate xoogga indhaha oo loo isticmaalo in fiber optic khadadka isgaarsiinta laliska.

astaamaha waxay ku dhigay laser Semiconductor teknoolajiyada waa nooca ugu muhiimsan ee maser. Waxay waxaa loo isticmaalaa:

• a dareemayaal telemetry, pyrometers, altimeter indhaha, rangefinders, indhaha, holography;
• in fiber nidaamka gudbinta indhaha iyo kaydinta xogta, hababka isgaarsiinta isku xidhan;
• madbacadaha laser, projectors video, tilmaamo, scanner code bar, image scanner, CD-ciyaartoy (DVD, CD, Blu-Ray);
• in nidaamka ammaanka, cryptography galmada, qalabaynta, tusayaasha;
• in METROLOGY indhaha iyo spectroscopy;
• in qaliin, ilkaha, Qurxin, therapy,
• biyaha lagu nadiifiyo, maaraynta waxyaabaha, bam of laser adke, control of falgalka kiimikada ee kala soocidda warshadaha, mishiinada warshadaha, nidaamyada ka suuroggalaan, iyo nidaamka difaaca hawada.

saarka garaaca wadnaha

Inta badan laser Semiconductor abuuraa ku jirase aad joogto ah. Sababo la xiriira waqtiga joogitaanka gaaban electrons in heerka tabinta ay ma yihiin kuwo aad u haboon guud ahaan ah la karsado Q-wareegay, laakiin hab magaabo-joogto ah hawlgalka si weyn u kordhin kartaa awoodda matoor galmada. Intaa waxaa dheer, laser Semiconductor loo isticmaali karaa qarniga hab-qufulan garaaca wadnaha ultrashort ama Beddelashada of faa'iido ah. awood Celceliska karsado gaaban, sida caadiga ah ku koobnayn a milliwatts yar mooyee laser VECSEL-optically gareeyeen, oo ereeya saarka qiyaasay karsado picosecond la soo noqnoqoshada ah tobanaan gigahertz.

Isbedbeddelka iyo xasilinta

Faa'iidada of electron joogitaanka gaaban ee band tabinta of laser Semiconductor waa awood u leh inay modulate soo noqnoqoshada sare ka VCSEL-laser ka badan 10 GHz. Waxaa la isticmaalaa in gudbinta xogta indhaha, spectroscopy, xasilinta laser.