Ukuqonda Umjikelezo Womsebenzi Ku-Lasers Semiconductor: Incazelo Enkulu Ngemva Kwepharamitha Encane

Kubuchwepheshe besimanje be-optoelectronic, ama-lasemiconductor lasers agqama ngesakhiwo sawo esihlangene, ukusebenza kahle okuphezulu, nokuphendula okusheshayo. Badlala indima ebalulekile emikhakheni efana nezokuxhumana, ukunakekelwa kwezempilo, ukucutshungulwa kwezimboni, kanye nokuzwa/ukubona. Kodwa-ke, lapho kuxoxwa ngokusebenza kwama-lases we-semiconductor, ipharamitha eyodwa ebonakala ilula kodwa ebaluleke kakhulu—umjikelezo womsebenzi—ivame ukunganakwa. Le ndatshana ingena emcabangweni, ekubalweni, emithethweni, kanye nokubaluleka okungokoqobo komjikelezo wemisebenzi kumasistimu we-semiconductor laser.

1. Uyini Umjikelezo Wemisebenzi?

Umjikelezo womsebenzi isilinganiso esingena-Dimensionless esisetshenziselwa ukuchaza ingxenye yesikhathi i-laser esesimweni "sokuvuliwe" phakathi nenkathi eyodwa yesiginali ephindayo. Ngokuvamile kuvezwa njengephesenti. Ifomula ithi: Duty Cycle=(Pulse Width/Isikhathi Sokushaya)×100%. Isibonelo, uma i-laser ikhipha i-1-microsecond pulse njalo kuma-microseconds ayi-10, umjikelezo wemfanelo uthi: (1 μs/10 μs)×100%=10%.

2. Kungani Umjikelezo Womsebenzi Ubalulekile?

Nakuba kuyisilinganiso nje, umjikelezo wemisebenzi uthinta ngokuqondile ukuphathwa kwe-laser okushisayo, ubude besikhathi sokuphila, amandla okukhiphayo, kanye nokwakheka kohlelo lonke. Ake sihlukanise ukubaluleka kwayo:

① Ukuphathwa Kokushisa kanye Nokuphila Kwedivayisi

Emisebenzini ye-high-frequency pulsed, umjikelezo wemisebenzi ephansi usho izikhathi "ezinde" phakathi kwama-pulses, okusiza i-laser iphole. Lokhu kunenzuzo ikakhulukazi ezinhlelweni zokusebenza zamandla aphezulu, lapho ukulawula umjikelezo wemisebenzi kunganciphisa ukucindezelwa okushisayo futhi kunwebe impilo yedivayisi.

② Amandla Okukhiphayo Nokulawula Ukuqina Kwe-Optical

Umjikelezo womsebenzi ophezulu uphumela ekuphumeni okukhulu okumaphakathi okumaphakathi, kuyilapho umjikelezo womsebenzi ophansi wehlisa amandla amaphakathi. Ukulungisa umjikelezo womsebenzi kuvumela ukucushwa kahle kwamandla okukhiphayo ngaphandle kokushintsha idrayivu ephezulu yamanje.

③ Impendulo Yesistimu Nokuguqulwa Kwesiginali

Ekuxhumaneni kwe-optical kanye nezinhlelo ze-LiDAR, umjikelezo womsebenzi uthonya ngokuqondile isikhathi sokuphendula kanye nezinhlelo zokuguquguquka. Isibonelo, ku-pulsed laser range, ukusetha umjikelezo womsebenzi olungile kuthuthukisa ukutholwa kwesignali ye-echo, kuthuthukisa kokubili ukunemba kokulinganisa kanye nobuningi.

3. Izibonelo Zokusebenza Zomjikelezo Wemisebenzi

① I-LiDAR (Ukutholwa kwe-Laser nokushintshashintsha)

Kumamojula ahluka nge-laser angu-1535nm, umjikelezo we-low-duty-cycle, ukumiswa kwe-high-peak pulse ngokuvamile kusetshenziselwa ukuqinisekisa kokubili ukutholwa kwebanga elide nokuphepha kwamehlo. Imijikelezo yomsebenzi ivamise ukulawulwa phakathi kuka-0.1% no-1%, kulinganisa amandla aphezulu aphezulu nokusebenza okuphephile, okupholile.

② Ama-Laser wezokwelapha

Kuzinhlelo zokusebenza ezifana nokwelashwa kwesikhumba noma ukuhlinzwa nge-laser, imijikelezo yemisebenzi ehlukene iphumela emiphumeleni ehlukahlukene yokushisa kanye nemiphumela yokwelapha. Umjikelezo womsebenzi ophezulu udala ukushisa okuqhubekayo, kuyilapho umjikelezo wemisebenzi ephansi usekela ukuphuma kwe-pulsed ngokushesha.

③ I-Industrial Material Processing

Ekumaka nge-laser nokushisela, umjikelezo wemisebenzi uthinta indlela amandla afakwa ngayo ezintweni. Ukulungisa umjikelezo wemisebenzi kuyisihluthulelo sokulawula ukujula kokuqoshwa nokungena kokushisela.

4. Ungawukhetha Kanjani Umjikelezo Womsebenzi Ofanele?

Umjikelezo womsebenzi ofanele uncike ekusetshenzisweni okukhethekile kanye nezici ze-laser:

①Umjikelezo Womsebenzi Ophansi (<10%)

Ilungele izinhlelo zokusebenza eziphakeme kakhulu, ze-short-pulse njengokulinganisa noma ukumaka ukunemba.

②Umjikelezo Wemisebenzi Emaphakathi (10%–50%)

Ifanele amasistimu e-laser aphindaphindayo aphezulu.

③Umjikelezo Wemisebenzi Ephakeme (>50%)

Ukusebenza kwe-approach continuous wave (CW), esetshenziswa ezinhlelweni ezifana nokumpompa okubonakalayo nokuxhumana.

Ezinye izici okufanele zicatshangelwe zifaka amandla okuhlakazeka kwe-thermal, ukusebenza kwesekethe yomshayeli, nokuzinza kwe-thermal ye-laser.

5. Isiphetho

Nakuba mncane, umjikelezo womsebenzi uyipharamitha yokuklama eyinhloko ezinhlelweni ze-semiconductor laser. Akuthinti kuphela okukhiphayo kokusebenza kodwa futhi nokuzinza kwesikhathi eside nokuthembeka kwesistimu. Ekuthuthukisweni nasekusetshenzisweni kwe-laser esikhathini esizayo, ukulawula okunembayo kanye nokusetshenziswa okuguquguqukayo komjikelezo wemisebenzi kuzobaluleka ekuthuthukiseni ukusebenza kahle kohlelo kanye nokwenza izinto ezintsha zikwazi.

Uma uneminye imibuzo mayelana ne-laser parameter design noma izinhlelo zokusebenza, zizwe ukhululekile ukufinyelela noma ukushiya amazwana. Silapha ukusiza!