Raws li cov ntawv thov laser muaj zog txuas ntxiv nthuav dav, laser diode tuav tau dhau los ua qhov tseem ceeb hauv thaj chaw xws li laser siv, kev lag luam, khoom siv kho mob, thiab kev tshawb fawb tshawb fawb. Nrog lawv cov hwj huam zoo heev, kev hloov pauv hloov tau, thiab kev ua haujlwm siab electro-optical, cov cuab yeej no yog lub hauv paus ntawm ntau lub tshuab laser niaj hnub. Txawm li cas los xij ntawm ntau qhov kev ua tau zoo ntawm lub laser diode bar, ib qho kev ntsuas feem ntau tsis saib xyuas tab sis tseem ceeb heev: lub divergence lub kaum sab xis. Kab lus no tshawb txog cov yam ntxwv, lub hauv paus chiv keeb ntawm lub cev, thiab qhov cuam tshuam ntawm lub divergence lub kaum sab xis hauv laser diode tuav - thiab qhov kev tsim kho qhov muag tuaj yeem tswj tau zoo li cas.
1. Dab tsi yog Divergence Angle?
Lub divergence lub kaum sab xis piav qhia yuav ua li cas lub laser beam kis tau raws li nws propagates nyob rau hauv qhov chaw dawb. Nws qhia txog qhov twg lub beam nthuav tawm ntawm lub emission facet. Nyob rau hauv laser diode tuav, lub divergence lub kaum sab xis muaj zog asymmetry nyob rau hauv ob lub ntsiab lus qhia:
Fast Axis: Perpendicular rau qhov bar nto. Lub cheeb tsam emission yog qhov nqaim heev (feem ntau 1-2 µm), ua rau muaj qhov sib txawv loj, feem ntau 30 ° - 45 ° lossis ntau dua.
Slow Axis: Parallel mus rau qhov ntev ntawm qhov bar. Lub cheeb tsam emission yog dav dua (ntau pua ntawm microns), ua rau me me divergence kaum, feem ntau nyob ib ncig ntawm 5 ° - 15 °.
Qhov no asymmetric divergence yog ib qho kev sib tw tsim loj rau kev sib koom ua ke nrog laser diode tuav.
2. Lub hauv paus chiv keeb ntawm Divergence
Lub divergence lub kaum sab xis yog feem ntau txiav txim los ntawm lub waveguide qauv thiab lub emission facet loj:
Nyob rau hauv lub ceev axis, lub emission cheeb tsam yog heev me me. Raws li txoj kev xav diffraction, me me apertures ua rau loj dua divergence.
Nyob rau hauv lub axis qeeb, lub nqaj nthuav dav raws qhov ntev ntawm lub bar hla ntau lub emitters, uas ua rau muaj qhov sib txawv me me.
Raws li qhov tshwm sim, laser diode tuav inherently pom muaj qhov sib txawv siab hauv qhov nrawm nrawm thiab qis divergence nyob rau hauv qeeb axis.
3. Yuav ua li cas Divergence Angle cuam tshuam rau kev tsim qauv
① Tus nqi siab ntawm Collimation thiab Beam Shaping
Vim lub siab asymmetry ntawm cov nqaj raw khoom, FAC (Fast Axis Collimation) thiab SAC (Slow Axis Collimation) optics yuav tsum tau siv. Qhov no tsub kom qhov system complexity thiab xav tau siab installation precision thiab thermal stability.
② Txwv Fiber Coupling Efficiency
Thaum coupling laser bars rau hauv multimode fibers, optical systems, los yog aspheric lo ntsiab muag, qhov loj ceev-axis divergence yuav ua rau beam "spillover," txo coupling efficiency. Divergence yog qhov tseem ceeb ntawm optical poob.
③ Beam Zoo hauv Module Stacking
Nyob rau hauv multi-bar stacked modules, kev tswj tsis zoo sib txawv tuaj yeem ua rau tsis sib xws ntawm kab sib tshooj lossis kev sib txawv deb, cuam tshuam rau kev tsom xam precision thiab thermal faib.
4. Yuav ua li cas tswj thiab optimize Divergence nyob rau hauv Laser Diode Bars
Txawm hais tias kev sib txawv feem ntau txhais los ntawm cov qauv ntaus ntawv, ob peb lub tswv yim ntawm cov txheej txheem tuaj yeem siv rau kev ua kom zoo dua:
①Kev siv FAC Lenses
Tso lub lens ceev-axis collimation ze rau ntawm lub ntsej muag emitting compresses lub nqaj thiab txo qhov sib txawv ntawm qhov ceev axis - qhov no yog qhov tseem ceeb hauv feem ntau cov qauv.
②SAC Lenses rau Ntxiv Shaping
Txawm hais tias qhov qeeb-axis divergence yog me me, shaping tseem yuav tsum tau nyob rau hauv arrays los yog kab-teeb qhov chaw kom ua tau ib tug uniform tso zis.
③Beam Combining thiab Optical Shaping Design
Siv cov micro-lens arrays, cylindrical lo ntsiab muag, los yog cov qauv kho qhov muag tuaj yeem pab tsim ntau cov kab teeb laser rau hauv lub teeb ci siab, cov khoom tsim tawm.
④Ntaus-Level Waveguide Optimization
Kho cov txheej txheej txheej tuab, tsim qauv waveguide, thiab cov qauv grating tuaj yeem ua kom zoo dua qhov nrawm-axis divergence los ntawm qib nti.
5. Divergence Control nyob rau hauv tiag-lub ntiaj teb daim ntawv thov
①Laser Pump Sources
Nyob rau hauv high-power solid-state los yog fiber ntau laser tshuab, laser diode tuav ua hauj lwm twj tso kua mis. Tswj kev sib txawv-tshwj xeeb tshaj yog nyob rau hauv lub nrawm axis-txhim kho kev sib txuas ua haujlwm thiab kev tsom teeb pom kev zoo.
②Cov cuab yeej kho mob
Rau cov tshuab xws li laser kho thiab tshem tawm cov plaub hau, tswj kev sib txawv kom ntseeg tau tias muaj zog ntau dua thiab muaj kev nyab xeeb, kev kho mob zoo dua.
③Cov khoom siv ua haujlwm
Nyob rau hauv laser welding thiab txiav, optimized divergence pab txhawb lub zog ntau dua, ua kom pom tseeb zoo dua, thiab ntau meej, ua haujlwm tau zoo.
6. Cov lus xaus
Lub divergence lub kaum sab xis ntawm lub laser diode bar yog qhov kev hloov pauv tseem ceeb - los ntawm micro-scale nti physics mus rau macro-scale optical systems.
Nws ua hauj lwm raws li ob qho tib si beam zoo qhia thiab ib tug tsim ciam rau kev koom ua ke. Raws li daim ntawv thov xav tau thiab cov txheej txheem nyuaj txuas ntxiv nce ntxiv, kev nkag siab thiab tswj kev sib txawv dhau los ua lub peev xwm tseem ceeb rau cov tuam txhab laser thiab cov koom ua ke ib yam nkaus - tshwj xeeb tshaj yog rau kev nce mus rau lub zog siab dua, ci ntsa iab, thiab kev ntseeg tau.
Post lub sij hawm: Lub Xya hli ntuj-14-2025