Ubuninzi bamandla kunye nokuxinana kwamandla e-laser

Ubuninzi bamandla kunye nokuxinana kwamandla e-laser

Uxinaniso bubungakanani bomzimba esiqhelene nabo kakhulu kubomi bethu bemihla ngemihla, ukuxinana esinxibelelana kakhulu nobuninzi bezinto eziphathekayo, ifomula ngu-ρ=m/v, oko kukuthi, ubuninzi bulingana nobunzima obahlulwe ngomthamo. Kodwa ubuninzi bamandla kunye nobuninzi bamandla we-laser bahluke, apha bahlulwe ngummandla kunomthamo. Amandla kwakhona unxibelelwano lwethu kunye nobuninzi bezinto ezibonakalayo, kuba sisebenzisa umbane yonke imihla, umbane uya kubandakanya amandla, iyunithi yemigangatho yamazwe ngamazwe yamandla yi-W, oko kukuthi, i-J / s, ngumlinganiselo wamandla kunye nexesha leyunithi, iyunithi yomgangatho wamazwe ngamazwe wamandla nguJ. yoxinaniso amandla W/m2, kwaye kwiintsimi laser, ngenxa yokuba indawo ye-laser irradiation spot incinci kakhulu, ngoko ke ngokubanzi iW/cm2 isetyenziswa njengeyunithi. Ubuninzi bamandla bususwa kwingcamango yexesha, ukudibanisa amandla kunye nobuninzi, kwaye iyunithi yi-J / cm2. Ngokuqhelekileyo, iilaser eziqhubekayo zichazwe kusetyenziswa ubuninzi bamandla, ngelixai-pulsed laserszichazwa kusetyenziswa zombini ukuxinana kwamandla kunye noxinzelelo lwamandla.

Xa i-laser isebenza, uxinaniso lwamandla ludla ngokumisela ukuba umda wokutshabalalisa, okanye ukucima, okanye ezinye izinto zokusebenza zifikelelwe. I-Threshold yingqikelelo edla ngokuvela xa kufundwa intsebenziswano yee-laser nomcimbi. Kuphononongo lwe-pulse emfutshane (enokuthi ithathelwe ingqalelo njengenqanaba le-us), i-ultra-short pulse (enokuthi ithathelwe ingqalelo njengenqanaba le-ns), kunye ne-ultra-fast (ps kunye ne-fs stage) imathiriyeli ye-laser interaction, abaphandi bokuqala badla ngokuthatha ingqikelelo yoxinaniso lwamandla. Le ngcamango, kwinqanaba lokusebenzisana, imele amandla asebenza kwindawo ekujoliswe kuyo kwiyunithi nganye, kwimeko ye-laser yezinga elifanayo, le ngxoxo ibaluleke kakhulu.

Kukwakho nomda wokuxinana kwamandla kwinaliti yepulse enye. Oku kwenza ufundo lwe-laser-matter interaction lubenzima ngakumbi. Nangona kunjalo, izixhobo zovavanyo zanamhlanje zihlala ziguquka, ububanzi be-pulse ububanzi, amandla e-pulse enye, ukuphindaphinda rhoqo kunye nezinye iiparamitha zihlala zitshintsha, kwaye zifuna ukuqwalasela imveliso yokwenene yelaser kwi-pulse energy eguquguqukayo kwimeko yoxinano lwamandla ukulinganisa, inokuba rhabaxa kakhulu. hayi indawo). Nangona kunjalo, kuyacaca ukuba eyona ndlela yokwenyani ye-laser waveform isenokungabi luxande, i-square wave, okanye intsimbi okanye i-Gaussian, kwaye ezinye zimiselwa ziipropathi ze-laser ngokwayo, ebunjwe ngakumbi.

Ububanzi be-pulse budla ngokunikezelwa yi-half-height ububanzi obunikezelwa yi-oscilloscope (i-peak epheleleyo yesiqingatha-ububanzi be-FWHM), okubangela ukuba sibale ixabiso lobuninzi bamandla ukusuka kumandla ombane, aphezulu. Ubude nobubanzi besiqingatha bufaneleke ngakumbi kufuneka bubalwe ngokudibeneyo, ubude besiqingatha nobubanzi. Akukhange kubekho phando luneenkcukacha malunga nokuba kukho umgangatho ofanelekileyo we-nuance yokwazi. Kugxininiso lwamandla ngokwawo, xa usenza izibalo, kuqhelekile ukuba kusetyenziswe amandla e-pulse enye ukubala, amandla okubetha omnye / i-pulse ububanzi / indawo yebala, eyi-avareji yendawo yamandla, kwaye iphinda-phindwe ngo-2, ngenxa ye-spatial incopho yamandla anjalo (i-spatial incopho ye-eneji i-spatial incopho yamandla anjalo (i-spatial i-gat distribution ayifuni ukuhanjiswa kwe-spatial). ngoko), kwaye iphinda-phindwe ngentetho yosasazo lweradial, Kwaye ugqibile.