Raws li lub zog hluav taws xob laser tshuab txuas ntxiv mus sai, Laser Diode Bars (LDBs) tau dhau los siv dav hauv kev lag luam, kev phais kho mob, LiDAR, thiab kev tshawb fawb tshawb fawb vim lawv lub zog siab ceev thiab cov khoom siv hluav taws xob siab. Txawm li cas los xij, nrog rau kev sib koom ua ke thiab kev ua haujlwm tam sim no ntawm laser chips, thermal tswj kev sib tw tau dhau los ua qhov tseem ceeb - cuam tshuam ncaj qha rau kev ua haujlwm ruaj khov thiab lub neej ntawm laser.
Ntawm ntau cov tswv yim tswj kev thermal, Kev Sib cuag Conduction Txias yog ib qho tseem ceeb tshaj plaws thiab siv dav siv hauv laser diode bar ntim, ua tsaug rau nws cov qauv yooj yim thiab thermal conductivity. Kab lus no tshawb txog cov hauv paus ntsiab lus, kev xav txog kev tsim qauv, kev xaiv cov khoom siv, thiab cov qauv yav tom ntej ntawm "txoj kev ntsiag to" rau kev tswj xyuas thermal.
1. Cov ntsiab lus ntawm kev sib cuag Conduction Txias
Raws li lub npe qhia, kev sib cuag conduction txias ua haujlwm los ntawm kev tsim kev sib cuag ncaj qha ntawm lub laser nti thiab lub dab dej kub, ua kom muaj cua sov hloov mus los ntawm cov khoom siv thermal conductivity thiab sai sai rau qhov chaw sab nraud.
①The HnojPath:
Nyob rau hauv ib tug raug laser diode bar, txoj kev tshav kub yog raws li nram no:
Chip → Solder Layer → Submount (piv txwv li, tooj liab lossis ceramic) → TEC (Thermoelectric Cooler) lossis Kub Sink → Ambient Ib puag ncig
②Nta:
Txoj kev ua kom txias no nta:
Concentrated tshav kub txaus thiab luv thermal txoj kev, zoo txo hlws ris kub; Compact tsim, haum rau ntim miniaturized; Passive conduction, yuav tsum tsis muaj complex active txias loops.
2. Kev txiav txim siab tsim qauv tseem ceeb rau kev ua haujlwm thermal
Txhawm rau kom muaj txiaj ntsig zoo ntawm kev sib cuag txias, cov hauv qab no yuav tsum tau ua tib zoo hais thaum lub sijhawm tsim khoom:
① Thermal Resistance ntawm Solder Interface
Lub thermal conductivity ntawm cov txheej solder plays lub luag hauj lwm tseem ceeb nyob rau hauv tag nrho cov thermal kuj. High-conductivity hlau xws li AuSn alloy los yog ntshiab indium yuav tsum tau siv, thiab solder txheej thickness thiab uniformity yuav tsum tau tswj kom txo tau thermal barriers.
② Submount Khoom Xaiv
Common submount cov ntaub ntawv muaj xws li:
Copper (Cu): Siab thermal conductivity, nqi-zoo;
Tungsten Copper (WCu) / Molybdenum Copper (MoCu): Zoo dua CTE match nrog chips, muab ob qho tib si lub zog thiab conductivity;
Aluminium Nitride (AlN): Cov rwb thaiv tsev hluav taws xob zoo heev, haum rau kev siv hluav taws xob ntau.
③ Surface Contact Quality
Nto roughness, flatness, thiab wettability ncaj qha cuam tshuam rau kev hloov hluav taws xob. Polishing thiab kub plating feem ntau yog siv los txhim kho kev sib cuag thermal.
④ Txo Thermal Path
Tus qauv tsim yuav tsum ua kom luv luv ntawm txoj kev thermal ntawm cov nti thiab lub dab dej kub. Tsis txhob cuam tshuam cov txheej txheem nruab nrab ntawm cov khoom siv los txhim kho kev ua kom sov tag nrho.
3. Cov lus qhia txog kev txhim kho yav tom ntej
Nrog rau qhov tsis tu ncua mus rau miniaturization thiab siab zog ceev, kev sib cuag conduction txias tshuab yog hloov zuj zus nyob rau hauv cov lus qhia nram qab no:
① Multi-layer Composite TIMs
Kev sib xyaw ua ke ntawm cov xim hlau thermal conduction nrog saj zawg zog buffering los txo qhov cuam tshuam kev cuam tshuam thiab txhim kho thermal cycling durability.
② Integrated Heat Sink Ntim
Tsim cov submounts thiab cov dab dej kub ua ib qho kev sib koom ua ke kom txo tau cov kev sib txuas lus sib txuas thiab ua kom cov txheej txheem-theem hluav taws xob hloov pauv tau zoo.
③ Bionic Structure Optimization
Siv cov txheej txheem microstructured uas ua raws li cov txheej txheem thermal dissipation-xws li "zoo li tsob ntoo" lossis "cov qauv zoo li nplai" - txhawm rau txhim kho kev ua haujlwm thermal.
④ Intelligent Thermal Control
Incorporating kub sensors thiab dynamic hwj chim tswj rau adaptive thermal tswj, ncua lub neej ua hauj lwm ntawm lub cuab yeej.
4. Cov lus xaus
Rau high-power laser diode tuav, thermal tswj tsis yog ib qho kev sib tw - nws yog lub hauv paus tseem ceeb rau kev ntseeg tau. Hu rau kev ua kom txias, nrog nws cov txiaj ntsig zoo, paub tab, thiab tus nqi tsim nyog, tseem yog ib qho ntawm cov kev daws teeb meem tseem ceeb rau kev ua kom sov sov hnub no.
5. Txog Peb
Ntawm Lumispot, peb coj cov kws tshaj lij hauv kev ntim khoom laser diode, kev ntsuam xyuas thermal tswj, thiab xaiv cov khoom siv. Peb lub hom phiaj yog los muab kev ua haujlwm siab, lub neej ntev laser kev daws teeb meem raws li koj daim ntawv thov xav tau. Yog tias koj xav paub ntau ntxiv, peb zoo siab tos txais koj tuaj ntsib peb pab neeg.
Post lub sij hawm: Jun-23-2025