Isalathiso sokukhetha i-laser yefayibha yemowudi enye

Isalathiso sokukhethai-laser yefayibha yemowudi enye
Kwizicelo ezisebenzayo, ukukhetha imowudi enye efanelekileyoi-laser yefayibhaifuna ukulinganiswa okucwangcisiweyo kweeparameter ezahlukeneyo ukuqinisekisa ukuba ukusebenza kwayo kuyahambelana neemfuno ezithile zesicelo, imeko yokusebenza kunye nemida yohlahlo-lwabiwo mali. Eli candelo liza kubonelela ngendlela yokukhetha esebenzayo ngokusekelwe kwiimfuno.
Icebo lokukhetha elisekelwe kwiimeko zesicelo
Iimfuno zokusebenza zeiileyizazahluka kakhulu kwiimeko ezahlukeneyo zokusetyenziswa. Inyathelo lokuqala ekukhetheni kukucacisa iimfuno eziphambili zesicelo.
Ukucubungula izinto ngokuchanekileyo kunye nokuveliswa kwe-micro-nano: Ezi zicelo ziquka ukusika okucolekileyo, ukubhola, ukucofa i-semiconductor wafer, ukumakisha kwinqanaba le-micron kunye nokuprinta kwe-3D, njl. Zineemfuno eziphezulu kakhulu zomgangatho we-beam kunye nobukhulu bendawo egxile kuyo. I-laser ene-M² factor esondele kangangoko kwi-1 (efana ne-<1.1) kufuneka ikhethwe. Amandla okukhupha kufuneka amiselwe ngokusekelwe kubukhulu bezinto kunye nesantya sokucubungula. Ngokubanzi, amandla aqala kumashumi ukuya kumakhulu ee-watts anokuhlangabezana neemfuno zobuninzi be-micro-processing. Ngokuphathelele ubude be-wavelength, i-1064nm lolona khetho lukhethwayo kuninzi lwe-metal material processing ngenxa yesantya sayo esiphezulu sokufunxa kunye nexabiso eliphantsi nge-watt nganye yamandla e-laser.
Uphando lwezenzululwazi kunye nokulinganisa okuphezulu: Iimeko zokusetyenziswa ziquka ii-optical tweezers, i-cold atom physics, i-high-resolution spectroscopy kunye ne-interferometry. Ezi ndawo zihlala zifuna kakhulu i-monochromaticity, uzinzo lwe-frequency kunye nokusebenza kwengxolo ye-laser. Iimodeli ezine-linewidth encinci (nokuba yi-single frequency) kunye nengxolo ephantsi kufuneka zinikwe kuqala. Ububanzi be-wavelength kufuneka bukhethwe ngokusekelwe kumgca we-resonance we-atom okanye i-molecule ethile (umzekelo, i-780nm isetyenziswa rhoqo ekupholiseni ii-athomu ze-rubidium). Imveliso yokugcinwa kwe-Bias idla ngokuba yimfuneko kwiimvavanyo zokuphazamiseka. Imfuneko yamandla ngokubanzi ayiphezulu, kwaye amakhulu aliqela ee-milliwatts ukuya kwii-watts ezininzi ahlala anele.
Unyango kunye ne-biotechnology: Usetyenziso luquka utyando lwamehlo, unyango lolusu kunye nemifanekiso ye-fluorescence microscopy. Ukhuseleko lwamehlo yeyona nto iphambili ekufuneka iqwalaselwe, ngoko ke ii-laser ezinamaza obude obuyi-1550nm okanye i-2μm, ezikwibhendi yokhuseleko lwamehlo, zihlala zikhethwa. Usetyenziso lokuxilonga, kufuneka kuqwalaselwe uzinzo lwamandla; Usetyenziso lonyango, amandla afanelekileyo kufuneka akhethwe ngokusekelwe kubunzulu bonyango kunye neemfuno zamandla. Ukuguquguquka kokudluliselwa kwe-optical yinzuzo enkulu kwiinkqubo ezinjalo.
Unxibelelwano kunye nokuVavanya: Ukubona i-fiber optic, i-liDAR kunye nonxibelelwano lwe-space optical zizicelo eziqhelekileyo. Ezi meko zifunailezaukuba nokuthembeka okuphezulu, ukuguquguquka kwendalo kunye nokuzinza kwexesha elide. Ibhendi ye-1550nm ibe lolona khetho lukhethwayo ngenxa yokulahlekelwa kwayo kugqithisileyo kokudluliselwa kwi-optical fibers. Kwiinkqubo zokufumanisa ezihambelanayo (ezifana ne-coherent lidar), i-laser e-linearly polarized ene-linewidth encinci kakhulu iyadingeka njenge-oscillator yendawo.
2. Ukuhlelwa kweeparamitha ezibalulekileyo
Xa kujongwene neeparameters ezininzi, izigqibo zinokwenziwa ngokusekelwe kwizinto ezibalulekileyo ezilandelayo:
Iiparamitha ezigqibeleleyo: Okokuqala, misela ubude bomda kunye nomgangatho womda. Ububanzi bomda bumiselwa ziimfuno ezibalulekileyo zesicelo (iimpawu zokufunxa izinto, imigangatho yokhuseleko, imigca ye-atomic resonance), kwaye ngokuqhelekileyo akukho ndawo yokuvumelana. Umgangatho womda umisela ngokuthe ngqo ukuba kunokwenzeka na ukusetyenziswa kwesicelo. Umzekelo, umatshini wokuchwetheza ngokuchanekileyo awunakwamkela iilaser ezine-M² ephezulu kakhulu.
Iiparameters zokusebenza: Okwesibini, qwalasela amandla okukhupha kunye nobubanzi bomgca/ukuphola. Amandla kufuneka ahlangabezane nomlinganiselo wamandla okanye iimfuno zokusebenza kakuhle kwesicelo. Iimpawu zobubanzi bomgca kunye nokuphola zimiselwa ngokusekelwe kwindlela ethile yobugcisa yesicelo (njengokuba kukho ukuphazamiseka okanye ukuphindaphindwa kwamaza). Iiparameters ezisebenzayo: Okokugqibela, cinga ngozinzo (njengozinzo lwamandla okukhupha ixesha elide), ukuthembeka (ixesha lokusebenza elingenaziphene), ukusetyenziswa kwamandla omthamo, ukuhambelana kojongano kunye neendleko. Ezi parameters zichaphazela ubunzima bokudibanisa kunye neendleko zizonke zobunini be-laser kwindawo yokusebenza yokwenyani.

3. Ukukhetha kunye nokugweba phakathi kwemowudi enye kunye nemowudi ezininzi
Nangona eli nqaku ligxile kwi-single-modeiileyiza zefayibha, kubalulekile ukuqonda ngokucacileyo imfuneko yokukhetha imowudi enye ekukhetheni ngokwenene. Xa iimfuno eziphambili zesicelo kukuchaneka okuphezulu kokucubungula, indawo encinci echaphazeleka bubushushu, amandla okugxila aphezulu okanye umgama omde wokudlulisela, i-laser yefayibha yemowudi enye kuphela ukhetho oluchanekileyo. Ngokwahlukileyo koko, ukuba isicelo siquka kakhulu ukuwelda ipleyiti etyebileyo, unyango lomphezulu omkhulu okanye ukudluliselwa kwamandla aphezulu omgama omfutshane, kwaye imfuneko yokuchaneka ngokupheleleyo ayiphezulu, ke ii-laser zefayibha zemowudi ezininzi zinokuba lukhetho olungabizi kakhulu nolusebenzayo ngenxa yamandla azo aphezulu kunye neendleko eziphantsi.