Rau ib lub laser nti nrog ib qhov tso zis optical zog ntawm ntau tshaj 500mW, nws twb yog ib tug high-power laser nti. Lub conversion efficiency txawv raws li cov khoom. Piv txwv li, tam sim no lub zog siab ntawm lub teeb liab tuaj yeem ncav cuag 50%, thiab cov hluav taws xob hluav taws xob ntxiv tau hloov mus rau hauv lub zog hluav taws xob.
Rau cov tsis muaj zog LDs, xws li qib mW siv hauv kev sib txuas lus kho qhov muag, kab noj hniav ntog kev puas tsuaj feem ntau tsis tshua xav txog. High-power laser chips yog feem ntau ua rau kab noj hniav nto kev puas tsuaj Catastrophic optical puas, COD. Kev puas tsuaj kho qhov muag pom kev puas tsuaj, tseem hu ua kev puas tsuaj kho qhov muag iav puas tsuaj (COMD), yog hom tsis ua haujlwm ntawm lub zog lasers.
Feem ntau peb xav tias COD yog tshwm sim los ntawm lub semiconductor PN hlws ris yog overloaded vim muaj ntau tshaj lub zog ceev thiab absorbing ntau lub teeb lub zog generated los ntawm qhov nce, uas nws thiaj li ua rau melting thiab recrystallization ntawm kab noj hniav cheeb tsam, thiab cov cheeb tsam cuam tshuam yuav tsim. ib tug loj tus naj npawb ntawm cov lattice defects, uas yuav ua kom puas cov kev ua tau zoo ntawm cov cuab yeej. Thaum lub cheeb tsam cuam tshuam loj txaus, peb yuav hu rau cov kab noj hniav saum npoo blackening, kab nrib pleb, zawj thiab lwm yam phenomena pom nyob rau hauv ib tug optical microscope li "sab nraud COD mechanism".
Kev txhim kho lub teeb liab nti lub peev xwm los tiv thaiv COD (kev puas tsuaj rau daim iav qhov muag pom kev puas tsuaj) tuaj yeem ua tiav los ntawm ntau txoj hauv kev, feem ntau suav nrog kev xaiv cov khoom siv, cov tshuab tsis nqus qhov rais thiab nti tsim optimization.
Kev xaiv cov khoom siv:
Kev siv cov ntaub ntawv zoo yog lub hauv paus rau kev txhim kho COD tsis kam. Piv txwv li, cov khoom siv AlGaInP qhia tau hais tias kev ua tau zoo hauv cov xim liab thiab tuaj yeem siv los npaj cov LEDs liab ua haujlwm siab.
Hauv Micro LED chips, kev siv cov khoom siv indium gallium nitride (InGaN), ua ke nrog V-shaped pit technology, tuaj yeem txo qhov kev sib cais ntawm siab hauv cov khoom, yog li txhim kho tag nrho kev ua haujlwm ntawm cov nti.
Tsis-absorptive qhov rais technology:
Tsis yog-absorptive qhov rais tshuab yog ib txoj kev zoo uas yuav txo tau lub teeb nqus ntawm laser chips, yog li suppressing tiam ntawm COD. Piv txwv li, siv cov thev naus laus zis ntawm Zn diffusion los tsim lub qhov rais uas tsis yog-absorbing, lub zog siab 660nm semiconductor laser tuaj yeem npaj tau, uas nws qhov kawg lub ntsej muag nqus nqus tau txo, pab txo qis COD.

Chip tsim optimization:
Thaum lub sij hawm lub nti tsim theem, COD kuj tuaj yeem txhim kho los ntawm kev ua kom zoo dua cov qauv thiab cov kev txwv. Piv txwv li, los ntawm kev tswj lub localization ntawm cov neeg nqa khoom, qhov cuam tshuam ntawm qhov chaw uas tsis yog-radiative recombination nyob rau hauv quantum efficiency yuav txo tau heev, yog li txhim kho tag nrho cov kev ua tau zoo ntawm lub nti.
Nyob rau hauv cov ntaub ntawv epitaxy theem, optimization kuj yuav ua tau los xyuas kom meej lub uniformity thiab stability ntawm cov khoom, yog li txhim kho cov COD kuj ntawm cov nti.
Lwm yam kev txhais tau tias:
Kev txhim kho kev hloov dua siab tshiab ntawm laser chips kuj yog ib qho kev taw qhia tseem ceeb. Rau ib lub laser chips nrog ib tug output optical hwj chim ntawm ntau tshaj 500mW, lub conversion efficiency yuav ncav cuag 50%, thiab cov hluav taws xob seem yog hloov dua siab tshiab rau hauv lub tshav kub zog, uas yuav pab txo qhov kub ntawm lub nti thiab yog li txhim kho nws COD kuj.

Hauv cov ntsiab lus, los ntawm kev siv cov ntaub ntawv zoo, tsis siv lub qhov rais siv tshuab, nti tsim optimization thiab lwm yam kev qhia, COD kuj ntawm lub teeb liab chips tuaj yeem txhim kho tau zoo, yog li txhim kho lawv cov kev ua tau zoo thiab kev ntseeg tau.
Thaum COD tshwm sim, cov nti yuav raug puas ntsoog, feem ntau nrog kev poob qis hauv lub zog kho qhov muag ntau dua 50%, lossis txawm tias tsis muaj lub teeb. Yuav ua li cas txhim kho lub nti lub peev xwm tiv taus COD? Peb tuaj yeem siv zog rau hauv cov khoom siv epitaxy theem, nti tsim theem, nti txheej txheem theem, thiab nti kawg lub ntsej muag kab noj hniav nto kho.
Muaj ntau txoj hauv kev los txhim kho nti tsis kam rau COD:
1 Strain quantum well technology
Raws li qhov dav tshaj plaws cov cheeb tsam ntawm semiconductor lasers, Quantized cov khoom siv hauv qab, uas yuav ua kom nruj dua ntawm qhov chaw ua haujlwm tam sim no thiab qhov kub thiab txias ntawm lub laser; los ntawm kev hloov lub peev xwm dav dav thiab qhov siab barrier, Nws tuaj yeem hloov pauv lub zog ntawm lub sijhawm thiab paub txog cov yam ntxwv tunable ntawm lub laser. Piv nrog rau cov tsoos ob npaug heterojunction semiconductor laser, nws tuaj yeem txo qhov pib tam sim no ntawm lub laser thiab txhim kho quantum efficiency thiab sib txawv nce. Kev taw qhia txog kev lim dej rau hauv quantum zoo yuav hloov pauv nws tus kheej lub zog band qauv. Los ntawm kev kho cov hauj lwm ntawm qhov hnyav thiab lub teeb lub qhov bands nyob rau hauv lub valence band, tus tsim tsis thiab degree ntawm kev ywj pheej ntawm lub nti epitaxial qauv yuav nce. Feem ntau hais lus, Qhia txog compressive strain rau hauv quantum zoo epitaxial qauv tsim los ntawm III-V ternary thiab quaternary cov ntaub ntawv yuav ua rau cov kev hloov ntawm lub zog band muaj nuj nqi, yog li txo qhov pib tam sim no ntawm lub laser; thaum qhia tensile hom, nws yuav flatten lub zog band muaj nuj nqi. Rau qee qhov, qhov nce ntawm cov khoom siv thaum ua haujlwm ntawm lub zog siab yog txhim kho. Qhov tshwm sim ntawm strained quantum qhov dej ua rau nws muaj peev xwm kom tau txais cov qauv siv hluav taws xob uas yuav tsum tau ua thiab nce qhov nce los ntawm kev kho cov kab mob, ua rau lub zog loj hauv kev ua haujlwm ntawm semiconductor lasers.
2 Aluminium-free quantum well technology
Aluminium-dawb lasers muaj qhov zoo tshaj plaws ntawm aluminium-muaj lasers:
1) Cov ntaub ntawv tsis muaj txhuas muaj zog COMD siab dua li cov ntaub ntawv uas muaj txhuas. Txhuas nyob rau hauv lub active cheeb tsam yog yooj yim oxidized thiab ua rau tsaus kab tsis xws luag, uas yuav txo tau lub zog ceev thaum COMD tshwm sim thiab ua rau nws yooj yim mus tsim COMD, yog li txwv lub zog thiab lub neej ntawm lub laser.
2) Nyob rau tib lub sijhawm, piv nrog aluminium-muaj quantum qhov dej, aluminium-free quantum wells muaj qis dua thiab thermal conductivity ntau dua, yog li qhov decombination tus nqi qis, qhov kub thiab txias ntawm qhov siab yog qis, cov kab noj hniav degradation qeeb. , qhov nce ntawm cov kab tsaus nti tsis xws luag yog inhibited, thiab cov degradation sab hauv ntawm cov khoom yog qeeb.
3. Chip ntim qauv thiab txoj kev: Los ntawm kev xaav ntawm cov khoom ntim cov qauv tsim, xaiv cov ntaub ntawv nrog thermal expansion coefficient thiab thermal conductivity zoo dua, tsim cov thermal expansion coefficient thiab thermal conductivity ntawm cov khoom siv hluav taws xob los ntawm cheeb tsam, qhia txog kev ntim kev ntxhov siab ntawm ntau qhov sib txawv thiab hom, nce qhov sib txawv band dav, thiab yog li txhim kho COD kuj ntawm cov nti.
Peb qhov chaw nyob
B-1507 Ruiding Mansion, No.200 Zhenhua Rd, Xihu District 310030 Hangzhou Zhejiang Tuam Tshoj
Xov tooj
0086 181 5840 0345
info@brandnew-china.com
