Laser Chip

Laser nti, tseem hu ua unmounted diode laser bar, yog ib leeg-emitter laser nti los yog ib leeg-bar laser nti, uas tsis yog mounted rau lub dab dej kub thiab tsis muaj ib tug sab nrauv ntim. Xaiv los ntawm GaAs, InP, thiab GaSb cov khoom siv semiconductor kom tau txais wavelength ntawm 450 nm txog 2 µm, uas xa cov kev ntseeg tau tshwj xeeb thiab kev ua tau zoo.

Lub laser nti yog ib tug me me nti uas integrates lasers thiab lwm yam optoelectronic Cheebtsam. Lub hauv paus tseem ceeb ntawm lub laser nti yog ib lub laser semiconductor, uas siv cov txheej txheem recombination ntawm electrons thiab qhov nyob rau hauv cov ntaub ntawv semiconductor los tsim lasers. Laser chips yog me me thiab sib zog dua li cov pa roj lasers lossis cov khoom siv hauv lub xeev lasers, ua rau lawv tsim nyog rau kev koom ua ke rau hauv ntau yam khoom siv portable thiab embedded.

Ib Leeg Emitter

Ib leeg Bar

VCSEL Chip

Ib leeg Emitter EEL Chip

Ib leeg Bar EEL Chip

Qhov sib txawv tseem ceeb ntawm ib leeg emitter laser nti thiab ib qho bar laser nti yog lawv cov qauv thiab daim ntawv thov. Ib leeg emitter laser nti feem ntau yog xa mus rau ib qho laser nti, thaum ib qho bar laser nti yog strip-puab cov qauv tsim los ntawm ntau lub laser chips.

Ib qho emitter laser nti yog tsim los ntawm ib qho laser nti thiab feem ntau muaj qhov me me thiab qis zog tso zis. Lawv feem ntau yog siv rau hauv cov ntawv thov uas xav tau kev tswj hwm ntawm cov nqaj, xws li kev sib txuas lus fiber ntau thiab laser pointers. Cov yam ntxwv ntawm ib qho emitter laser nti yog lawv cov kab teeb pom kev zoo thiab tsim nyog rau cov ntawv thov uas xav tau kev ncaj qha siab thiab siab ci.

Ib qho bar laser chip yog cov qauv zoo li cov kab nrib pleb uas tsim los ntawm ntau lub laser chips thiab feem ntau muaj qhov loj dua thiab cov zis ntau dua. Ib leeg bar laser nti yog tsim rau cov ntawv thov uas yuav tsum muaj lub zog tso zis ntau, xws li cov khoom siv, cov khoom siv kho mob, thiab cov cuab yeej tshawb fawb tshawb fawb. Cov yam ntxwv ntawm ib qho bar laser nti yog lawv lub zog tso zis siab thiab tsim nyog rau cov ntawv thov uas xav tau qhov chaw loj irradiation lossis siab zog.

Nyob rau hauv cov nqe lus ntawm kev paub meej thiab kev siv, ib leeg emitter laser nti thiab ib tug bar laser nti kuj txawv nyob rau hauv kev npaj thiab xaiv cov khoom. Ib leeg emitter laser nti feem ntau yog npaj siv hlau organic chemical vapor deposition technology thiab muaj cov nqaj zoo thiab efficiency. Ib leeg bar laser nti tsis txhob sab lasing los ntawm kev tsim ntawm epitaxial txheej thiab kev sib cais zawj, thiab txhim kho kev ntseeg tau thiab kav ntev ntawm lub cuab yeej.

Unmounted laser tuav tuaj yeem txiav rau hauv ib qho emitter laser chips, suav nrog cov kauj ruam hauv qab no:

Scribing: Ntawm txhua qhov tsis txuas laser bar yuav tsum tau cleaved, scribing yog ua ntawm ob daim ntawv nyob ib sab.

Zaj duab xis nthuav dav: Cov nplaum zaj duab xis nrog lub laser bar txuas yog xa mus rau lub tshuab nthuav dav zaj duab xis rau thawj zaj duab xis nthuav dav. Tom qab kev nthuav dav zaj duab xis tiav, cov nplaum zaj duab xis yog nyob rau hauv thawj lub xeev expansion thiab tseem nyob rau hauv lub xeev no.

Splitting: Cov nplaum zaj duab xis nyob rau hauv thawj lub xeev expansion yog pauv mus rau lub tshuab splitting, thiab lub laser bar yog phua raws txoj kab scribing cais cov chips ntawm lub laser bar ntawm ib leeg. Los ntawm nthuav cov nplaum zaj duab xis txuas nrog lub laser bar ua ntej kev sib cais, prestress yog muab rau cov chips ntawm ob sab ntawm txoj kab scribing, kom cov chips tuaj yeem raug cais kom huv si raws li cov lus qhia thaum sib cais, zam cov chips los ntawm kev sib tsoo nrog txhua tus. lwm yam thaum sib cais thiab puas.

Tus yuam sij rau txoj kev no yog muab prestress los ntawm cov yeeb yaj kiab nthuav dav kom ntseeg tau tias cov chips tuaj yeem raug cais raws li cov lus qhia thaum sib cais, yog li txhim kho cov txiaj ntsig thiab zoo ntawm cov chips.

Qhov sib nrug ntawm cov emitters ntawm lub unmounted laser bar muaj qhov cuam tshuam loj rau kev ua haujlwm. Uniform emitter spacing tuaj yeem ua kom zoo dua cov cua sov dissipation ntawm lub laser bar uas tsis muaj teeb meem, yog li txhim kho lub neej thiab kev ruaj ntseg ntawm lub tshuab tsis siv neeg laser.

Qhov kev ncua deb ntawm cov emitters ntawm lub unmounted laser bar yuav cuam tshuam rau lub tshav kub dissipation nyhuv. Yog tias qhov sib nrug ntawm cov emitters tsis sib npaug, nws yuav ua rau qhov kub ntawm qee cov emitters siab dhau, yog li cuam tshuam rau kev ua haujlwm thiab lub neej ntawm laser. Los ntawm kev kho qhov dav ntawm txhua lub emitter ntawm lub bar, lub tshav kub dissipation ntawm tag nrho cov bar tuaj yeem ua kom zoo dua qub, thiab qhov kub ntawm qhov nruab nrab emitter tuaj yeem raug zam kom siab tshaj qhov kub ntawm ntug emitter, yog li txo cov teeb meem. ntawm wavelength hloov thiab mem tes dav txo.

Qhov sib nrug ntawm cov emitters kuj cuam tshuam qhov ci ntawm lub laser bar uas tsis muaj teeb meem. Yog tias qhov kev ncua deb ntawm cov emitters loj dhau lawm, nws yuav ua rau lub teeb ci tsis sib xws thiab cuam tshuam rau cov duab pom. Qhov tsim nyog qhov sib nrug ntawm cov emitters tuaj yeem ua kom pom cov txiaj ntsig thiab kev ua haujlwm ntawm lub laser bar uas tsis muaj teeb meem hauv cov ntawv thov sib txawv.

Muaj ntau yam kev xav tau rau cov dab dej kub uas siv rau hauv ntim laser chips, feem ntau suav nrog thermal conductivity, thermal expansion coefficient txuam, thermal stress tso peev xwm thiab kev kho deg. cov

Ua ntej, thermal conductivity yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob. Laser chips ua kom muaj cua sov ntau thaum ua haujlwm. Yog tias cov cua sov tsis tuaj yeem tawg rau lub sijhawm, nws yuav cuam tshuam rau kev ua haujlwm thiab lub neej ntawm laser. Yog li ntawd, cov khoom siv hluav taws xob yuav tsum muaj cov thermal conductivity siab kom thiaj li ua tau cov cua sov kom zoo. Cov khoom siv hluav taws xob ntau xws li txhuas nitride, silicon carbide, pob zeb diamond, thiab lwm yam muaj cov thermal conductivity siab.

Thib ob, thermal expansion coefficient txuam kuj tseem ceeb heev. Cov thermal expansion coefficients ntawm laser chips thiab cov khoom siv hauv lub dab dej kub yuav tsum sib phim kom txo tau kev ntxhov siab los ntawm kev hloov kub thiab tiv thaiv cov kab nrib pleb lossis deformation ntawm cov ntaub ntawv. Piv txwv li, lub thermal expansion coefficient ntawm txhuas nitride yog 4.6 × 10 ^ -6 / K, uas yog ze rau lub thermal expansion coefficient ntawm laser chips, yog li nws yog feem ntau siv raws li ib tug hloov tshav kub dab dej.

Tsis tas li ntawd, thermal kev ntxhov siab tso tawm muaj peev xwm kuj yog qhov tseem ceeb. Lub tshav kub tsim los ntawm lub laser thaum lub sijhawm ua haujlwm yuav ua rau thermal stress ntawm lub nti thiab lub dab dej kub. Yog tias cov khoom siv hauv lub dab dej kub tsis tuaj yeem tso tawm cov kev ntxhov siab no, nws yuav ua rau lub laser kev ua haujlwm tsis zoo los yog ua tsis tiav. Yog li ntawd, cov khoom siv hauv lub dab dej kub yuav tsum muaj peev xwm ua kom muaj kev ntxhov siab zoo.

Thaum kawg, kev kho saum npoo kuj cuam tshuam rau kev ua haujlwm ntawm lub dab dej kub. Kev kho saum npoo ntawm cov khoom siv cua sov yuav tsum tau ua kom tau raws li qee qhov tsos thiab lub cev thiab tshuaj ntsuam xyuas kom ntseeg tau tias nws muaj kev ntseeg siab thiab ua haujlwm ntev hauv kev siv tswv yim.

Nyob rau hauv cov ntsiab lus, lub dab dej kub siv rau ntim cov laser chips yuav tsum muaj cov thermal conductivity, phim cov nti thermal expansion coefficient, zoo thermal stress tso peev xwm thiab tsim nyog kev kho mob saum npoo los xyuas kom meej stability thiab ntev kev cia siab ntawm lub laser.

Cov kauj ruam tseem ceeb ntawm kev ntim cov tshuab tsis siv lub tshuab laser chips suav nrog: xaiv cov khoom ntim tsim nyog, tsim cov qauv ntim, ua qhov vuam thiab sib txuas, thiab txhim kho kev tswj xyuas thermal.

Ua ntej tshaj plaws, xaiv cov khoom ntim khoom tsim nyog yog tus yuam sij kom ntseeg tau qhov kev ua tau zoo ntawm lub tshuab tsis siv lub tshuab laser. Piv txwv li, kub-tin nyuaj solder tuaj yeem siv los ntim cov khoom siv hluav taws xob siab siab gallium nitride (GaN) xiav semiconductor laser tuav, thiab tooj liab-tungsten hloov hluav taws xob tuaj yeem siv los ua cov txheej txheem tsis pub ntim cov khoom seem. Tsis tas li ntawd, InGaAs / AlGaAs epitaxial cov khoom siv kuj tuaj yeem siv los tsim lub zog siab tapered semiconductor laser bar arrays.

Qhov thib ob, cov qauv ntim khoom tsim tau zoo yog qhov tseem ceeb rau kev txhim kho kev ua haujlwm ntawm cov khoom siv tsis siv neeg laser nti. Piv txwv li, cov qauv pob tuaj yeem tsim tau siv cov khoom xws li microchannel cua sov dab dej, insulating films, thiab tooj liab tapes kom ua tau zoo thermal tswj thiab tam sim no tis.

Tom ntej no yog cov txheej txheem soldering thiab bonding. Lub tshuab ua haujlwm siab yog siv los ua eutectic-bond lub nti rau cov tooj liab-tungsten hloov pauv kub dab dej, thiab vuam kub, siab thiab lub sij hawm raug tswj nruj me ntsis kom ntseeg tau tias vuam zoo. Cov kev sim qhia tau hais tias qhov tsim nyog vuam tsis tuaj yeem txo qhov thermal tsis kam thiab qhov pib tam sim no, yog li txhim kho cov khoom siv hluav taws xob kho qhov muag thiab photoelectric hloov dua siab tshiab.

Thaum kawg, optimizing thermal tswj yog ib qho tseem ceeb ntsuas los xyuas kom meej lub sij hawm ntev kev ruaj ntseg ntawm unmounted laser chip tuav. Los ntawm kev tsim qauv tsim lub dab dej kub thiab xaiv cov ntaub ntawv tsim nyog, cov thermal kuj tuaj yeem txo tau zoo, qhov ua kom sov dissipation tuaj yeem txhim kho, thiab kev pabcuam lub neej ntawm cov khoom siv tsis siv neeg laser nti tuaj yeem txuas ntxiv.

1. Tiv thaiv kom tsis txhob muaj kab mob: Lub tshuab laser tsis tuaj yeem yuav tsum tau ntim rau hauv qhov chaw tsis muaj plua plav thiab tsis muaj menyuam kom tiv thaiv kev nkag mus ntawm cov khoom thiab cov kab mob. Cov kab mob no tuaj yeem cuam tshuam rau kev ua haujlwm thiab lub neej ntawm lub laser bar uas tsis tau txuas, thiab txawm tias ua rau ntim tsis ua haujlwm.

2. Txhim kho kev ntim khoom zoo: Kev tswj ib puag ncig hauv chav huv huv tuaj yeem ua kom ntseeg tau tias qhov kub, av noo thiab huab cua ntws thaum lub sijhawm ntim khoom yog nyob rau hauv lub xeev zoo tshaj plaws, yog li txhim kho cov ntim khoom zoo thiab sib xws. Qhov no yuav pab txo cov ntim khoom tsis xws luag thiab txhim kho tus nqi tsim nyog ntawm cov khoom.

3. Txhim kho lub neej kev pab cuam: ntim rau hauv ib puag ncig huv si tuaj yeem txo qhov kev puas tsuaj rau lub tshuab laser tsis siv neeg los ntawm lwm yam, yog li txuas nws lub neej kev pab cuam. Cov chav huv huv yuav txo tau cov teeb meem muaj kuab paug uas tuaj yeem ntsib thaum lub sijhawm ntim khoom los ntawm kev tswj hwm cov xwm txheej ib puag ncig, thiab tiv thaiv kev ruaj ntseg thiab kev ntseeg siab ntawm lub laser bar uas tsis muaj teeb meem.

4. Txhim kho kev ua haujlwm zoo: Lub tshuab lim dej zoo thiab kev tswj hwm ib puag ncig ntawm cov chav huv huv tuaj yeem txo cov kev cuam tshuam ntawm kev tsim khoom thiab rov ua haujlwm los ntawm kev ua qias tuaj, yog li txhim kho tag nrho cov khoom lag luam. Tsis tas li ntawd, chav huv huv kuj tuaj yeem ua kom muaj kev ruaj khov thiab ruaj khov ntawm cov txheej txheem tsim khoom, ntxiv kev txhim kho ntau lawm.

Cov qauv sib txawv:

EEL (Edge Emitting Laser): EEL siv hluav taws xob emission raws li cov kev taw qhia axis, uas yog, lub teeb raug tso tawm raws lub dav hlau kev taw qhia ntawm lub cuab yeej, feem ntau nrog ib tug cylindrical qauv, thiab lub teeb emissions laser beam los ntawm sab.

VCSEL (Vertical Cavity Surface Emitting Laser): Cov qauv ntawm VCSEL yog ntsug, uas yog, lub teeb yog perpendicular rau lub cuab yeej, thiab lub teeb feem ntau yog tawm los ntawm sab saum toj, ua ib qho chaw ncig.

Emission hom:

EEL: Lub teeb laser yog tawm ntawm sab los ntawm cov qauv cylindrical.

VCSEL: Nto emitting laser, lub teeb tsuas yog tawm ntawm sab saum toj.

Spot puab:

EEL: Qhov chaw tso tawm yog elliptical.

VCSEL: Qhov chaw tso tawm yog ncig.

Kev ua tau zoo sib txawv:

EEL: Nws muaj lub zog tso zis ntau dua thiab lub zog ntawm ib lub laser, haum rau cov ntawv thov uas xav tau lub zog siab.

VCSEL: Nws muaj kev ua haujlwm siab hauv quantum thiab zoo dua thermal stability, thiab tuaj yeem ua tiav kev kub ceev, qis zog noj thiab ntau qhov kub thiab txias.

Cov cheeb tsam thov:

EEL: Nws feem ntau yog siv rau kev sib txuas lus ceev, xws li kev sib txuas lus fiber ntau, laser luam ntawv, kho qhov muag discs, thiab ntsuas qhov muag thiab kuaj pom.

VCSEL: Nws yog feem ntau siv nyob rau hauv cov ntaub ntawv chaw kho qhov muag kev sib txuas, lidar, kev paub lub ntsej muag, 3D scanning thiab lwm yam kev siv.

Hauv cov ntsiab lus, EEL thiab VCSEL muaj qhov sib txawv tseem ceeb hauv cov qauv, emission hom, qhov chaw zoo, kev ua tau zoo, thiab thaj chaw siv. Cov neeg siv tuaj yeem xaiv qhov tsim nyog laser nti raws li cov kev xav tau tshwj xeeb.

Kev ua haujlwm ntawm EEL Edge Emitting Laser nti feem ntau suav nrog cov kauj ruam hauv qab no:

1. Kev txhaj tshuaj tiv thaiv kab mob: Los ntawm kev siv qhov kev tsis ncaj ncees rau pem hauv ntej, cov khoom siv hluav taws xob raug txhaj los ntawm N-hom cheeb tsam mus rau hauv cov txheej txheem nquag, thiab qhov yog txhaj los ntawm thaj tsam P-hom mus rau hauv cov txheej txheem nquag. Nyob rau hauv lub active txheej, electrons thiab qhov recombine los tsim photons. Cov txheej txheem no zoo ib yam li lub teeb-emitting diode (LED), tab sis EEL yog ua kom tiav lasers es tsis txhob ntawm lub teeb zoo tib yam.

2. Stimulated radiation thiab light amplification: Photons generated in the active layer interact with other excited electrons, ua rau cov electrons hloov mus rau lub xeev tsis muaj zog thiab emit ntau photons nrog tib theem, zaus thiab kev taw qhia raws li thawj photons. Qhov no yog stimuled hluav taws xob. Thaum photons xav rov qab thiab tawm ntawm cov iav no, ntau cov hluav taws xob hluav taws xob photons tau tsim nyob rau hauv cov txheej txheem nquag, tsim lub teeb pom kev zoo hauv cov kab noj hniav resonant.

3. Resonant kab noj hniav thiab lub teeb amplification: Txij li thaum lub active txheej ntawm EEL yog embedded ntawm ob parallel daim iav (kawg ntsej muag), cov iav no yuav muaj kev cuam tshuam ib co photons rov qab mus rau lub active txheej. Thaum photons xav rov qab thiab tawm ntawm ob daim iav, ntau cov hluav taws xob hluav taws xob photons raug tsim tawm hauv cov txheej txheem nquag. Qhov kev rov ua kom lub teeb pom kev zoo no ua rau lub teeb amplification mechanism hauv lub resonant kab noj hniav.

4. Laser tso zis: Thaum tus naj npawb ntawm photons nyob rau hauv lub resonant kab noj hniav mus txog ib tug tej yam uas yuav pib, ib co photons yuav emissions los ntawm lub kawg lub ntsej muag nrog qis reflectivity los tsim laser tso zis. Cov kev taw qhia ntawm lub laser beam ntawm EEL yog thaum uas tig mus rau saum npoo ntawm nti, yog li nws yog hu ua ib tug ntug-emitting laser.

Plaub txoj kev ua kom txias

Natural convection heat sink cooling : Txoj kev no siv cov ntaub ntawv nrog cov thermal conductivity kom tshem tawm cov cua sov uas tsim los thiab dissipate cua sov los ntawm ntuj convection. Tsis tas li ntawd, fins kuj tseem tuaj yeem pab kom cov cua sov dissipate thiab txhim kho cov cua sov hloov ntawm cov cua txias.

Cov ntaub ntawv thermal conductivity: Siv cov ntaub ntawv nrog cov thermal conductivity kom txo qhov kub ntawm lub laser. Cov ntaub ntawv no tuaj yeem ua kom sov tau zoo, yog li tswj kev ua haujlwm ruaj khov ntawm lub laser.

Raws li kev lag luam-kev siv tshuab semiconductor, BrandNew muab ntau hom laser nti xaiv. Qee qhov kev xaiv no suav nrog wavelengths xws li 450nm mus txog 2100nm, ib leeg-emitter laser nti nrog txog 20W tso zis zog thiab ib leeg-bar laser nti nrog txog 600W tso zis zog, thiab nruam nthwv dej (CW) thiab quasi-nruam nthwv dej (QCW) ) kev xaiv. Laser nti thiab bar muaj nyob rau hauv ntau yam sau, stripe widths, bar widths, thiab kab noj hniav lengths, thiab customized xaiv yuav tsum tau tsim kom tau raws li koj cov kev cai tshwj xeeb.

Laser chips yog tsim nyob rau hauv cov kev tswj nruj tshaj plaws. Peb tsuas yog ua haujlwm nrog lub xeev-of-the-art epitaxy, ua, thiab facet txheej tshuab. Cov txheej txheem soldering yog siv rau kev sib sau ua ke laser nti. Cov khoom txhawb nqa ob qho tib si muag muag (indium) thiab tawv tawv (kub / tin). Tus qauv teeb tsa ntawm lub laser nti yog ib qho qauv emitter sib cais ntawm p-sab. Raws li kev thov, laser chips muaj nyob nrog kev txuas ntxiv p-sab metallization thiab hloov kho facet coatings, siv cov AR txheej qis rau kev sib dhos ntawm cov khoom siv sab nraud.

Brandnew Technology, ib qho ntawm diode laser manufacturers thiab lwm tus neeg nyob hauv Suav teb, muaj lub Hoobkas tshaj lij uas cov tuam txhab zoo laser chips thiab muag ntawm tus nqi sib tw. Txais tos rau wholesale peb cov khoom ua nyob rau hauv Suav teb.