A. Ingqikelelo yee-laser ultrafast
Iilaser ze-Ultrafast zihlala zibhekisa kwiimode-ezitshixekileyo iilaser ezisetyenziselwa ukukhupha i-ultra-short pulses, umzekelo, i-pulses ye-femtosecond okanye i-picosecond ubude.Igama elichaneke ngakumbi liya kuba yi-ultrashort pulse laser.I-laser ye-Ultrashort pulse iphantse itshixelwe iilaser, kodwa isiphumo sokutshintsha inzuzo sinokuvelisa i-ultrashort pulses.
B. Uhlobo lwe-laser ultrafast
1. Iilaser ze-Ti-sapphire, ngokuqhelekileyo imowudi ye-Kerr lens-itshixiwe, inokuvelisa i-pulses emfutshane malunga ne-5 fs ubude.Umndilili wabo wokukhupha amandla ngamakhulu ambalwa e-milliwatts, kunye namazinga okuphindaphinda kwe-pulse, yithi, i-80MHz kunye namashumi ee-femtoseconds okanye ngaphantsi, kunye nobude be-pulse yamashumi e-femtoseconds okanye ngaphantsi, okukhokelela kumandla aphezulu kakhulu.Kodwa iilaser ze-titanium-sapphire zifuna ukumpompa ukukhanya kwezinye iilaser ezinokukhanya okuluhlaza, okuzenza zibenzima kwaye zibize kakhulu.
2. Kukho iindidi ngeendidi ze-laser ze-diode-pumped lasers ezisekelwe, umzekelo, i-ytterbium-doped (ikristale okanye iglasi) okanye i-chromium-doped laser crystals, edla ngokusebenzisa i-SESAM passive mode-locking.Nangona ixesha lokubetha kwee-lases ze-diode-pumped lasers lingekho mfutshane njengoko ixesha lokubetha kwe-laser ye-titanium-sapphire, i-laser epumped i-diode inokugubungela ummandla obanzi weparamitha ngokobude be-pulse, izinga lokuphindaphinda kwe-pulse, kunye namandla aphakathi (jonga ngezantsi) .
3. I-Fiber lasers esekelwe kwiifiber zeglasi ezifakwe kwizinto ezinqabileyo zomhlaba nazo zinokuthi zitshixeke, umzekelo, ukusebenzisa i-polarization rotation okanye i-SESAM.Zinqongophele ngakumbi kunee-laser ezininzi ngokwamandla aphakathi, ngakumbi amandla aphezulu, kodwa zinokudityaniswa ngokulula kunye ne-fiber amplifiers.Inqaku malunga ne-mode-locked fibre lasers linika iinkcukacha ezingaphezulu.
(4) i-mode-locked diode lasers ingaba zizixhobo ezidibeneyo okanye i-laser diode diode yangaphandle, kwaye inokusebenza, i-passive okanye imowudi edibeneyo ivaliwe.Ngokuqhelekileyo, i-mode-locked diode lasers isebenza kwi-high (amawaka aliqela e-megahertz) izinga lokuphindaphinda i-pulse kwi-moderate pulse energy.
I-ultrafast laser oscillators ingaba yinxalenye yeenkqubo ze-laser ze-ultrafast, ezinokubandakanya i-amplifier ye-ultrafast (efana ne-fiber optic amplifier) ukunyusa amandla aphezulu kunye namandla okuphuma okuphakathi.
Ixesha lokuposa: Jun-20-2023