Ukuqonda uMjikelo woMsebenzi kwiLaser zeSemiconductor: Intsingiselo enkulu emva kweParameter encinci

Kwiteknoloji yanamhlanje ye-optoelectronic, ii-semiconductor lasers zihlukile ngesakhiwo sazo esincinci, ukusebenza kakuhle okuphezulu, kunye nokuphendula ngokukhawuleza. Zidlala indima ebalulekileyo kwiindawo ezifana nonxibelelwano, ukhathalelo lwempilo, ukucubungula imboni, kunye nokuva/ukuhlela. Nangona kunjalo, xa kuxoxwa ngokusebenza kwee-semiconductor lasers, ipharamitha enye ebonakala ilula kodwa ibaluleke kakhulu—umjikelo womsebenzi—idla ngokunganakwa. Eli nqaku lingena kwingcamango, ukubala, iziphumo, kunye nokubaluleka okusebenzayo komjikelo womsebenzi kwiinkqubo ze-semiconductor lasers.

1. Yintoni uMjikelo woMsebenzi?

Umjikelo womsebenzi yi-dimensionless ratio esetyenziselwa ukuchaza umlinganiselo wexesha i-laser ekulo kwimeko "yoku" ngaphakathi kwexesha elinye lesignali ephinda-phindayo. Ihlala ichazwa njengepesenti. Le fomula yile: Umjikelo woMsebenzi=(Ububanzi bePulse/Ixesha lokubetha kwentliziyo (100%) × 100%. Umzekelo, ukuba i-laser ikhupha i-pulse ye-1-microsecond rhoqo emva kwe-10 microseconds, umjikelo womsebenzi ngulo: (1 μs/10 μs)×100%=10%.

2. Kutheni uMjikelo woMsebenzi ubalulekile?

Nangona ingumlinganiselo nje, umjikelo womsebenzi uchaphazela ngokuthe ngqo ulawulo lobushushu lwelaser, ubomi bayo, amandla okukhupha, kunye noyilo lwenkqubo iyonke. Masihlalutye ukubaluleka kwayo:

① Ulawulo lobushushu kunye nobomi besixhobo

Kwimisebenzi ye-pulsed ephindaphindwayo, umjikelo womsebenzi ophantsi uthetha amaxesha amade "okungasebenzi" phakathi kwe-pulses, nto leyo enceda i-laser iphole. Oku kuluncedo ngakumbi kwizicelo zamandla aphezulu, apho ukulawula umjikelo womsebenzi kunokunciphisa uxinzelelo lobushushu kwaye kwandise ubomi besixhobo.

② Amandla okuphuma kunye noLawulo loBuchule bokuKhanya

Umjikelo womsebenzi ophezulu uphumela kwimveliso ephezulu ye-optical, ngelixa umjikelo womsebenzi ophantsi unciphisa amandla aphakathi. Ukulungisa umjikelo womsebenzi kuvumela ukulungiswa kakuhle kwamandla okukhupha ngaphandle kokutshintsha umbane we-peak drive.

③ Impendulo yeNkqubo kunye nokuguqulwa kweSignali

Kwiinkqubo zonxibelelwano lwe-optical kunye neenkqubo ze-LiDAR, umjikelo womsebenzi uchaphazela ngokuthe ngqo ixesha lokuphendula kunye nezicwangciso zokuguqulwa. Umzekelo, kwi-pulsed laser ranging, ukuseta umjikelo womsebenzi ofanelekileyo kuphucula ukubonwa kwesignali ye-echo, kuphucula ukuchaneka kokulinganisa kunye nokuphindaphinda.

3. Imizekelo yoSetyenziso loMjikelo woMsebenzi

① I-LiDAR (Ukufunyanwa kunye nokuHlela kweLaser)

Kwiimodyuli ze-laser ze-1535nm, ulungelelwaniso lwe-pulse olusebenza kancinci, olune-peak ephezulu ludla ngokusetyenziswa ukuqinisekisa ukubonwa komgama omde kunye nokhuseleko lwamehlo. Ii-duty cycles zihlala zilawulwa phakathi kwe-0.1% kunye ne-1%, zilungelelanisa amandla aphezulu kunye nokusebenza okukhuselekileyo nokupholileyo.

② IiLaser zezonyango

Kwizicelo ezifana nonyango lwesikhumba okanye utyando lwelaser, imijikelo eyahlukeneyo yomsebenzi ibangela iziphumo ezahlukeneyo zobushushu kunye neziphumo zonyango. Umjikelo ophezulu womsebenzi ubangela ubushushu obuhlala ixesha elide, ngelixa umjikelo ophantsi womsebenzi uxhasa ukususwa kwe-pulsed ngoko nangoko.

③ Ukucubungula Izinto Zemizi-mveliso

Kwi-laser marking kunye ne-welding, umjikelo womsebenzi uchaphazela indlela amandla afakwa ngayo kwizinto. Ukulungisa umjikelo womsebenzi kubalulekile ekulawuleni ubunzulu bokukrola kunye nokungena kwe-welding.

4. Ungayikhetha njani i-Duty Cycle echanekileyo?

Umjikelo womsebenzi ofanelekileyo uxhomekeke kwisicelo esithile kunye neempawu ze-laser:

①Umjikelo woMsebenzi oPhantsi (<10%)

Ilungele ukusetyenziswa kwe-high-peak, short-pulse apps ezifana ne-rankings okanye i-precision marking.

②Umjikelo woMsebenzi oPhakathi (10%–50%)

Ifanelekile kwiinkqubo zelaser eziphindaphindwayo kakhulu.

③Umjikelo woMsebenzi oPhezulu (>50%)

Isondela ekusebenzeni kwamaza aqhubekekayo (CW), esetyenziswa kwizicelo ezifana nokumpompa kwe-optical kunye nonxibelelwano.

Ezinye izinto ekufuneka ziqwalaselwe ziquka amandla okusasaza ubushushu, ukusebenza kwesekethe yomqhubi, kunye nokuzinza kobushushu belaser.

5. Isiphelo

Nangona incinci, umjikelo womsebenzi yiparameter ephambili yoyilo kwiinkqubo ze-laser ze-semiconductor. Ayichaphazeli kuphela imveliso yokusebenza kodwa ikwachaphazela uzinzo kunye nokuthembeka kwenkqubo ixesha elide. Kuphuhliso kunye nokusetyenziswa kwe-laser kwixesha elizayo, ulawulo oluchanekileyo kunye nokusetyenziswa okuguquguqukayo komjikelo womsebenzi kuya kuba yinto ebalulekileyo ekuphuculeni ukusebenza kakuhle kwenkqubo kunye nokwenza kube lula ukuvelisa izinto ezintsha.

Ukuba unemibuzo engaphezulu malunga noyilo lwepharamitha yelaser okanye usetyenziso, zive ukhululekile ukunxibelelana nathi okanye ushiye uluvo. Silapha ukukunceda!