Isalathiso sokukhethaI-laser ye-fiber yemodi enye
Kwizicelo ezisebenzayo, ukukhetha imowudi enye efanelekileyoifayibha laserifuna ukuveyishwa okucwangcisiweyo kweeparamitha ezahlukeneyo ukuqinisekisa ukuba ukusebenza kwayo kuhambelana neemfuno zesicelo esithile, indawo yokusebenza kunye nemiqobo yohlahlo lwabiwo-mali. Eli candelo liya kubonelela ngeendlela zokhetho ezisebenzayo ezisekelwe kwiimfuno.
Isicwangciso sokukhetha esisekelwe kwimiba yesicelo
Iimfuno zokusebenza zeiilaserziyahluka kakhulu kwiimeko ezahlukeneyo zosetyenziso. Inyathelo lokuqala ekukhetheni kukucacisa iimfuno ezingundoqo zesicelo.
Ukulungiswa kwezinto ezichanekileyo kunye nokuveliswa kwe-nano-nano: Ezo zicelo ziquka ukusika okulungileyo, ukugrumba, i-semiconductor wafer dicing, i-micron-level marking kunye noshicilelo lwe-3D, njl.njl. Zineemfuno eziphezulu kakhulu zomgangatho we-beam kunye nobukhulu bendawo egxininisekileyo. Ilaser ene-M² factor ekufutshane kangangoko kunokwenzeka kwi-1 (efana <1.1) kufuneka ikhethwe. Amandla emveliso kufuneka amiselwe ngokusekelwe kubukhulu bezinto eziphathekayo kunye nesantya sokucubungula. Ngokubanzi, amandla asusela kumashumi ukuya kumakhulu eewatts anokuhlangabezana neemfuno zokwenziwa kwezinto ezincinci. Ngokubhekiselele kwi-wavelength, i-1064nm lolona khetho lukhethwayo kuninzi lokulungiswa kwemathiriyeli yesinyithi ngenxa yezinga eliphezulu lokufunxa kunye nexabiso eliphantsi nge-watt nganye yamandla e-laser.
Uphando lwezeNzululwazi kunye nemilinganiselo ephezulu: Iimeko zokusetyenziswa ziquka i-tweezers optical, i-fiziksi ye-athomu ebandayo, i-spectroscopy ephezulu kunye ne-interferometry. Ezi nkalo zihlala zinosukelo olugqithisileyo lwe-monochromaticity, uzinzo rhoqo kunye nokusebenza kwengxolo yee-lasers. Iimodeli ezinobubanzi obumxinwa (nokuba yi-frequency enye) kunye nengxolo ephantsi kufuneka inikwe kuqala. I-wavelength kufuneka ikhethwe ngokusekelwe kumgca we-resonance ye-athomu ethile okanye i-molecule (umzekelo, i-780nm isetyenziswa ngokuqhelekileyo ukupholisa i-athomu ye-rubidium). Isiphumo sokugcinwa kwe-bias sihlala siyimfuneko kwimifuniselo yokuphazamiseka. Imfuno yamandla ayiqhelekanga, kwaye amakhulu aliqela e-milliwatts ukuya kwiiwatts ezininzi ahlala anele.
Ubuchwephesha bezonyango kunye nebhayoloji: Usetyenziso lubandakanya utyando lwamehlo, unyango lwesikhumba kunye ne-fluorescence microscopy imaging. Ukhuseleko lwamehlo lolona qwalaselo luphambili, ngoko ke iilaser ezinobude obuyi-1550nm okanye i-2μm, ezikwibhendi yokhuseleko lwamehlo, zihlala zikhethwa. Kwizicelo zokuxilonga, ingqwalasela kufuneka ihlawulwe kuzinzo lwamandla; Kwizicelo zonyango, amandla afanelekileyo kufuneka akhethwe ngokusekelwe kubunzulu bonyango kunye neemfuno zamandla. Ukuguquguquka kokuhanjiswa kwe-optical kuyinzuzo enkulu kwizicelo ezinjalo.
Unxibelelwano kunye nokuVavanya: I-Fiber optic sensing, i-liDAR kunye nonxibelelwano lwe-space optical zizicelo eziqhelekileyo. Ezi meko zifunalaserukuba nokuthembeka okuphezulu, ukuguquguquka kokusingqongileyo kunye nokuzinza kwexesha elide. Ibhendi ye-1550nm iye yaba yinto ekhethwayo ngenxa yokulahleka kwayo okuphantsi kokuhanjiswa kwiifibers optical. Kwiinkqubo zokubona ezihambelanayo (ezifana ne-lidar ehambelanayo), i-laser ye-linearly polarized line-linewidth emxinwa kakhulu iyafuneka njenge-oscillator yendawo.
2. Ukuhlela ngokuphambili iiparamitha eziphambili
Xa ujongene neeparamitha ezininzi, izigqibo zinokwenziwa ngokusekwe kwezi zinto ziphambili ngokubaluleka:
Iiparamitha eziqinisekileyo: Okokuqala, misela ubude be-waveleng kunye nomgangatho we-beam. Ubude be-wavelength buchongwa ziimfuno ezibalulekileyo zesicelo (iimpawu zokufunxa izinto eziphathekayo, imigangatho yokhuseleko, imigca ye-atomic resonance), kwaye ngokuqhelekileyo akukho ndawo yokulala. Umgangatho we-beam umisela ngokuthe ngqo ukunokwenzeka okusisiseko kwesicelo. Umzekelo, ukuchaneka komatshini akukwazi ukwamkela iilaser ezinoM² ophezulu ngokugqithisileyo.
Iiparamitha zokusebenza: Okwesibini, nikela ingqalelo kumandla ophumayo kunye nobubanzi bomgca / i-polarization. Amandla kufuneka ahlangabezane nomda wamandla okanye iimfuno ezifanelekileyo zesicelo. Ububanzi bomgca kunye neempawu zepolarization zimiselwa ngokusekelwe kwindlela ethile yobugcisa yesicelo (efana nokuba ukuphazamisa okanye ukuphindaphinda kabini kuyabandakanyeka). Iiparameters ezisebenzayo: Ekugqibeleni, qwalasela ukuzinza (njengokuzinza kwamandla okuphuma kwexesha elide), ukuthembeka (ixesha lokusebenza elingenasiphako), ukusetyenziswa kwamandla omthamo, ukuhambelana kwe-interface kunye neendleko. Ezi parameters zichaphazela ubunzima bokudibanisa kunye neendleko ezipheleleyo zobunini be-laser kwindawo yokusebenza yangempela.
3. Ukukhetha kunye nokugweba phakathi kwemowudi enye kunye nemodi eninzi
Nangona eli nqaku ligxile kwimowudi enyei-fiber lasers, kubalulekile ukuqonda ngokucacileyo imfuneko yokukhetha indlela enye kukhetho lokwenene. Xa iimfuno ezingundoqo zesicelo zezona zichanekileyo zokucubungula, eyona ndawo incinci echaphazelekayo kubushushu, ikhono lokugxila ekugqibeleni okanye umgama omde wokuhambisa, i-fiber ye-fiber laser yindlela echanekileyo kuphela. Kwelinye icala, ukuba usetyenziso lubandakanya ukuwelda kwepleyiti eshinyeneyo, unyango lomphezulu wendawo enkulu okanye ukuhanjiswa kwamandla aphezulu kumgama omfutshane, kwaye imfuno yokuchaneka ngokupheleleyo ayiphezulu, ke iilaser zefiber yemultimode zinokuba lukhetho olunoqoqosho ngakumbi nolusebenzayo ngenxa yamandla azo aphezulu kunye neendleko eziphantsi.
Ixesha lokuposa: Nov-12-2025