Cov Khoom Siv Hluav Taws Xob rau Laser Diode Bars: Tus Choj tseem ceeb ntawm kev ua tau zoo thiab kev ntseeg tau

Nyob rau hauv kev tsim thiab tsim ntawm high-power semiconductor lasers, laser diode tuav ua lub core light-emitting units. Lawv cov kev ua tau zoo nyob ntawm tsis yog tsuas yog nyob rau hauv qhov zoo ntawm cov laser chips tab sis kuj hnyav heev ntawm cov txheej txheem ntim. Ntawm cov khoom sib txawv hauv kev ntim khoom, cov ntaub ntawv solder ua lub luag haujlwm tseem ceeb raws li thermal thiab hluav taws xob cuam tshuam ntawm cov nti thiab lub dab dej kub.

1. Lub luag haujlwm ntawm Solder hauv Laser Diode Bars

Laser diode tuav feem ntau ua ke nrog ntau lub emitters, uas ua rau muaj zog ceev ceev thiab kev tswj xyuas nruj heev. Yuav kom ua tiav cov cua kub kom zoo thiab kev ruaj ntseg, cov ntaub ntawv solder yuav tsum ua raws li cov hauv qab no:

① High thermal conductivity:

Ua kom muaj kev hloov pauv hluav taws xob zoo los ntawm laser nti.

② Zoo wettability:

Muab kev sib raug zoo ntawm cov nti thiab cov substrate.

③ Tsim nyog melting point:

Tiv thaiv kom tsis txhob rov qab los yog degradation thaum lub sijhawm ua haujlwm tom ntej lossis ua haujlwm.

④ Tau tshaj coefficient ntawm thermal expansion (CTE):

Minimizes thermal stress ntawm lub nti.

⑤ Kev qaug zog zoo heev:

Prolongs lub neej kev pab cuam ntawm lub cuab yeej.

2. Hom Solder rau Laser Bar Ntim

Cov hauv qab no yog peb yam tseem ceeb ntawm cov ntaub ntawv uas feem ntau siv rau hauv ntim ntawm laser diode tuav:

①Kub-Tin Alloy (AuSn)

Khoom:

Eutectic muaj pes tsawg leeg ntawm 80Au / 20Sn nrog lub melting point ntawm 280 ° C; siab thermal conductivity thiab mechanical zog.

Qhov zoo:

Zoo heev kub-kub stability, ntev thermal qaug zog lub neej, tsis muaj organic paug, muaj kev ntseeg siab

Daim ntawv thov:

Tub rog, aerospace, thiab high-end industrial laser tshuab.

②Pure Indium (hauv)

Khoom:

Melting point ntawm 157 ° C; soft thiab heev malleable.

Qhov zoo:

Superior thermal cycling kev ua tau zoo, tsis tshua muaj kev ntxhov siab ntawm cov nti, zoo tagnrho rau kev tiv thaiv cov qauv tsis yooj yim, tsim nyog rau kev sib khi qis

Kev txwv:

Yooj yim rau oxidation; yuav tsum tau inert cua thaum lub sij hawm ua, txo txhua yam zog; tsis zoo tagnrho rau high-load daim ntaub ntawv

③Composite Solder Systems (piv txwv li, AuSn + Hauv)

Qauv:

Feem ntau, AuSn yog siv hauv qab nti rau kev sib txuas ruaj khov, thaum Nyob rau hauv yog siv rau sab saum toj rau kev txhim kho thermal buffering.

Qhov zoo:

Ua ke muaj kev ntseeg siab nrog kev daws kev ntxhov siab, txhim kho tag nrho cov khoom ntim ruaj khov, yoog tau zoo rau ntau qhov chaw ua haujlwm

3. Kev cuam tshuam ntawm Solder Quality ntawm cov cuab yeej ua haujlwm

Kev xaiv cov khoom siv thiab cov txheej txheem tswj tau cuam tshuam rau kev ua haujlwm ntawm electro-optical thiab kev ruaj ntseg ntev ntawm cov khoom siv laser:

Nyob rau hauv lub zog ua haujlwm tsis tu ncua, txawm tias me me tsis xws luag hauv soldering tuaj yeem ua rau thermal buildup, ua rau kev ua haujlwm tsis zoo lossis cov cuab yeej tsis ua haujlwm. Yog li ntawd, xaiv cov khoom zoo thiab siv cov txheej txheem soldering yog qhov tseem ceeb rau kev ua tiav cov khoom siv laser muaj kev ntseeg siab.

4. Yav tom ntej Trends thiab Development

Raws li cov thev naus laus zis laser txuas ntxiv nkag mus rau hauv kev lag luam, kev phais kho mob, LiDAR, thiab lwm yam kev lag luam, cov khoom siv rau cov ntim laser tau hloov zuj zus raws li cov lus qhia hauv qab no:

①Tsawg-kub soldering:

Rau kev koom ua ke nrog cov khoom siv thermally rhiab heev

②Lead-free solder:

Ua kom tau raws li RoHS thiab lwm yam kev cai ib puag ncig

③High-performance thermal interface cov ntaub ntawv (TIM):

Txhawm rau txo qis thermal kuj

④Micro- soldering technologies:

Txhawb nqa miniaturization thiab high-density integration

5. Cov lus xaus

Txawm hais tias me me hauv ntim, cov ntaub ntawv solder yog cov khoom sib txuas tseem ceeb uas ua kom muaj kev ua tau zoo thiab kev ntseeg siab ntawm cov khoom siv laser siab. Nyob rau hauv lub ntim ntawm laser diode tuav, xaiv txoj cai solder thiab optimizing cov txheej txheem sib txuas yog qhov tseem ceeb rau kev ua tiav kev ua haujlwm ruaj khov mus ntev.

6. Txog Peb

Lumispot tau cog lus los muab cov neeg siv khoom nrog cov kws tshaj lij thiab txhim khu kev qha laser Cheebtsam thiab ntim cov kev daws teeb meem. Nrog kev paub ntau yam hauv kev xaiv cov khoom siv, kev tswj xyuas thermal, thiab kev ntsuam xyuas kev ntseeg siab, peb ntseeg tias txhua qhov kev kho kom zoo nkauj nthuav dav txoj hauv kev rau kev ua tau zoo. Yog xav paub ntxiv txog lub zog loj laser ntim tshuab, xav tiv tauj peb.