Laser na kulle-kulle, ikon babban makamashi ultrafast Laser

Babban iko femtosecondLaseryana da babban darajar aikace-aikace a cikin binciken kimiyya da filayen masana'antu kamar tsarar terahertz, bugun bugun bugun jini na attosecond da tsefe mitar gani.Mod-kulle Laserbisa ga al'ada toshe-ribar kafofin watsa labarai an iyakance ta thermal ruwan tabarau sakamako a babban iko, kuma a halin yanzu matsakaicin ikon fitarwa ne game da 20 W.

Laser na bakin ciki yana amfani da tsarin famfo mai wucewa da yawa don yin la'akari dafamfo haskezuwa ga takardar samun matsakaici tare da kauri na 100 microns don babban ingancin famfo sha. Matsakaicin matsakaicin riba mai sirara haɗe tare da fasahar kwantar da hankali yana rage tasirin tasirin ruwan tabarau na thermal da sakamako mara kyau, kuma yana iya samun babban ƙarfin bugun bugun femtosecond.
Wafer oscillators hade tare da Kerr lens yanayin-kulle fasaha sune manyan hanyoyin samun matsakaicin matsakaicin fitarwa na laser tare da faɗin bugun jini a cikin tsari na femtosecond.

FIG. 1 (a) 72 zane-zane na tsarin gani da (b) zane na zahiri na tsarin famfo

Tawagar masu bincike daga Kwalejin Kimiyya ta kasar Sin sun tsara da kuma gina wani Kerr ruwan tabarau na kulle-kulle takardar Laser dangane da kai ɓullo da 72-hanyar famfo module, da kuma ɓullo da wani Kerr ruwan tabarau mode-kulle takardar Laser tare da mafi matsakaicin iko da guda bugun jini makamashi a kasar Sin.
Dangane da ka'idar Kerr Lens mode-locking and the iterative lissafin of ABCD matrix, the research team first analyzed the mode-locking theory of thin plate Kerr lens mode-locking Laser, simulated the yanayin canje-canje a cikin resonator a lokacin mode-kulle aiki da kuma ci gaba da aiki, da kuma tabbatar da cewa cavity yanayin radius a wuya diaphragm bayan- fiye da% 7 za a rage.

Daga bisani, jagorancin tsarin ƙira, ƙungiyar bincike ta tsara da kuma gina wani Kerr Lens mode-locked resonator (FIG. 2) dangane da 72-hanyar famfo module (FIG.1) da kansa ɓullo da ta tawagar, da kuma samu wani pulsed Laser fitarwa tare da wani matsakaicin ikon 11.78W, bugun jini nisa na 245.70 fs makamashi a famfo guda WPS. lokaci. Nisa na bugun jini na fitarwa da bambancin yanayin intracavity suna cikin kyakkyawar yarjejeniya tare da sakamakon kwaikwayo.

FIG. 2 Tsarin tsari na rami mai resonant na yanayin Lens na Kerr-kulle Yb: YAG wafer Laser da aka yi amfani da shi a gwajin.

Domin inganta fitarwa ikon Laser, da bincike tawagar ƙara curvature radius na mayar da hankali madubi, kuma lafiya-saukar da Kerr matsakaici kauri da na biyu-oda watsawa. Lokacin da aka saita ƙarfin famfo zuwa 94 W, matsakaicin ƙarfin fitarwa ya ƙaru zuwa 22.33 W, kuma faɗin bugun jini ya kasance 394 fs kuma ƙarfin bugun jini guda ɗaya shine 0.28 μJ.

Don ƙara haɓaka ƙarfin fitarwa, ƙungiyar bincike za ta ƙara haɓaka radius na madaidaicin madubi mai ma'ana, yayin da yake sanya resonator a cikin yanayin rufaffiyar ƙarancin yanayi don rage tasirin tashin hankali da watsawar iska.