A. Umqondo we-Ultrafast Lasers
Ama-Lasers e-Ultrafast ajwayele ukubhekisela kuma-lasers akhiyiwe amamodi asetshenziselwa ukukhipha ama-pulses afushane, ngokwesibonelo, ama-pulses we-femtosecond noma ubude be-picosecond. Igama elinembe kakhudlwana lingaba yi-ultrashort pulse laser. I-Ultrashort Pulse Lasers icishe ibe ngama-lasers akhiyiwe ngemodi, kepha umphumela wokushintsha ukushintshanisa nawo ungakhiqiza ama-pulses we-ultrashort.
B. Uhlobo lwe-Ultrafast Laser
1 Amandla abo okukhishwa aphakathi ngokuvamile amamitha angamakhulu ambalwa, anamazinga okuphindaphinda, athi, 80mhz kanye namashumi amancane we-femtoseconds noma ngaphansi, kanye nesikhathi samashumi amancane we-femtoseconds noma ngaphansi, okuholela emandleni aphezulu kakhulu. Kepha ama-lapthire we-titanium-sapfire adinga ukupompa ukukhanya kusuka kwamanye ama-lasers akhanyayo aluhlaza, okubenza babe nzima kakhulu futhi babize kakhulu.
2. Kunama-lasers ahlukahlukene we-dide ancishiswe, ngokwesibonelo, i-yterthium-doped (crystal noma ingilazi) noma amakristalu we-chromium-doped Laser amakristalu, avame ukusebenzisa imodi yokuvala i-sesam. Yize ubude be-pulse be-diode-ama-lasers abanama-diode akufushane njengamanje ubude besikhathi se-titanium-sapfire lasers, ama-diode-flower ama-lasers angamboza isifunda esibanzi se-Pulse ngokwesilinganiso se-purse, amanani aphindaphindwayo (bheka phansi).
3 Zikhawulelwe kakhulu kunama-laser amaningi ngokuya ngamandla aphakathi, ikakhulukazi amandla aphezulu, kepha angahlanganiswa kalula nge-fiber amplifiers. I-athikili kuma-fiber avaliwe amamodi we-fiber lasers inika eminye imininingwane.
. Imvamisa, ama-lesers akhiyiwe e-mode asebenza endaweni ephezulu (izinkulungwane eziningana megahertz) Izinga lokuphindaphinda liphindwe kabusha emandleni alinganiselayo.
I-Ultrafast Laser Oscillators ingaba yingxenye yezinhlelo ze-Ultrafast Laser, ezingafaka futhi i-amplifier ye-Ultrafast (efana ne-fiber optic amplifier) ukukhulisa amandla aphezulu kanye namandla okukhishwa aphakathi.
Isikhathi Sokuthumela: Jun-20-2023