Ubucucike bwimbaraga nubucucike bwa laser

Ubucucike bwimbaraga nubucucike bwa laser

Ubucucike ni ubwinshi bwumubiri tumenyereye cyane mubuzima bwacu bwa buri munsi, ubucucike duhura cyane nubucucike bwibintu, formula ni ρ = ​​m / v, ni ukuvuga, ubucucike bungana na misa igabanijwe nubunini. Ariko ubucucike bwimbaraga nubucucike bwa laser biratandukanye, hano bigabanijwe nakarere kuruta amajwi. Imbaraga nazo duhura nibintu byinshi bifatika, kubera ko dukoresha amashanyarazi burimunsi, amashanyarazi azaba arimo ingufu, urwego mpuzamahanga rusanzwe rwingufu ni W, ni ukuvuga J / s, ni igipimo cyingufu nigihe cyigihe, urwego mpuzamahanga rusanzwe rwingufu ni J. Rero ubucucike bwamashanyarazi nigitekerezo cyo guhuza ingufu nubucucike, ariko dore agace ka irrasiyo yikibanza aho imbaraga zingana nubuso, imbaraga zigabanijwe nubuso, imbaraga nubuso bwimbaraga, imbaraga nubuso bwimbaraga, imbaraga zumuriro, inUmwanya, kubera ko laser irrasiyo yumwanya ari nto cyane, mubisanzwe W / cm2 ikoreshwa nkigice. Ingufu zingufu zavanyweho mubitekerezo byigihe, zihuza ingufu nubucucike, kandi igice ni J / cm2. Mubisanzwe, lazeri ikomeza isobanurwa ukoresheje ingufu zingana, mugihelaseribisobanurwa hifashishijwe ingufu zingana nubucucike bwingufu.

Iyo laser ikora, ubucucike bwimbaraga busanzwe bugena niba urwego rwo gusenya, cyangwa gukuraho, cyangwa ibindi bikoresho bikora bigerwaho. Threshold nigitekerezo gikunze kugaragara mugihe wiga imikoranire ya laseri nibintu. Kubushakashatsi bwimpiswi ngufi (zishobora gufatwa nkicyiciro cyacu), ultra-short pulse (ishobora gufatwa nkicyiciro cya ns), ndetse na ultra-yihuta (ps na fs icyiciro) ibikoresho byo guhuza laser, abashakashatsi ba mbere bakunze gufata igitekerezo cyubwinshi bwingufu. Iki gitekerezo, kurwego rwimikoranire, cyerekana imbaraga zikora kumugambi kuri buri gice, mugihe cya laser yo murwego rumwe, iki kiganiro gifite akamaro kanini.

Hariho kandi urwego rwimbaraga zingufu zo gutera inshinge imwe. Ibi kandi bituma ubushakashatsi bwimikoranire ya laser-ibintu bigorana. Nyamara, ibikoresho byubushakashatsi byubu birahora bihinduka, ubugari butandukanye bwimpiswi, ingufu za pulse imwe, inshuro zisubiramo nibindi bipimo bihora bihinduka, ndetse bikenera no gutekereza ku musaruro nyawo wa lazeri mu ihindagurika ry’ingufu za pulse mu bijyanye n’ingufu zingufu zapimwe, zishobora kuba zikaze cyane. Muri rusange, birashobora gufatwa nkaho ubwinshi bwingufu zagabanijwe nubugari bwimbaraga (umwanya) ni igihe cyo kugereranya ingufu zingana (umwanya). Ariko, biragaragara ko imiterere ya lazeri nyirizina idashobora kuba urukiramende, umurongo wa kare, cyangwa inzogera cyangwa Gaussian, kandi bimwe bigenwa nimiterere ya lazeri ubwayo, ikaba ifite ishusho.

Ubugari bwa pulse mubusanzwe butangwa nubugari bwuburebure butangwa na oscilloscope (impinga yuzuye yubugari bwa FWHM), bidutera kubara agaciro k'ubucucike bw'ingufu zituruka ku bucucike bw'ingufu, buri hejuru. Birenzeho igice cyuburebure nubugari bigomba kubarwa nuburinganire, igice cyuburebure nubugari. Ntabwo habaye iperereza rirambuye ryerekana niba hari nuance ijyanye no kumenya.Kubera ubwinshi bwingufu ubwazo, mugihe ukora ibarwa, mubisanzwe birashoboka gukoresha ingufu za pulse imwe kugirango ubare, ingufu za pulse imwe / ubugari bwa pulse / agace kamwe, aribwo imbaraga zigereranya umwanya, hanyuma ukagwizwa na 2, kububasha bwo hejuru cyane (kugabura umwanya ni kugabanwa no gukwirakwizwa no gukwirakwizwa no gukwirakwira).