Shintsha ijubane lokushaya kwe-laser enamandla amakhulu e-ultrashort

Shintsha ijubane lokushaya kweI-LASER enamandla amakhulu we-ultrashort

Ama-lasers we-Super Ultra-amafushane ngokuvamile abhekisela kuma-laser pulses ane-pulse yobubanzi bamashumi namakhulu ama-ferawattonds, amandla aphezulu ama-terawatts kanye nama-petawatts, kanye nokukhanya okukhanyayo okugxile kudlula i-1018 w / cm2. I-laser ye-Super Ultra-emfushane nomthombo wayo wemisebe yemisebe yayo kanye nomthombo wamandla aphezulu wezinhlayiya eziningi zinobubanzi bezinkomo zocwaningo eziphakeme ezifana nezimboni eziphakeme zobuchwepheshe, impilo yezokwelapha, amandla ezemvelo kanye nokuphepha kwezokuvikela ezweni lonke. Kusukela ukusungulwa kobuchwepheshe be-Chinks Pulse Amplication ngo-1985, ukuvela kwe-Watt yokuqala yezwe yokuqalai-laserNgo-1996 kanti ukuqedwa kwe-Laser ye-Waser yezwe yokuqala ye-10 eshaywayo yezwe ngonyaka we-10, okugxilwe kakhulu kwe-laser efushane kakhulu ye-Ultra esikhathini esidlule kube ikakhulu ukufeza "ukukhanya okukhulu kakhulu". Eminyakeni yamuva nje, ucwaningo selukhombisile ukuthi ngaphansi kwesimo sokugcina isivinini sokudlulisela i-super laser, uma ijubane lokudluliselwa kwe-pultse elifushane le-ultra-amafushane lingalawulwa, kulindeleke ukuthi linciphise isilinganiselo se-super ultra-shodaAmadivayisi we-Laser, kepha thuthukisa umphumela wayo ekuhlolweni kwe-Laser Physics ephezulu.

Ukuhlanekezela phambi kwe-pulse phambi kwe-ultra-eqinile ye-ultrashort laser
Ukuze uthole amandla aphezulu ngaphansi kwamandla akhawulelwe, ububanzi be-pulse buncishiswa bube ngama-20 ~ 30 ama-femtoseconds ngokukhulisa umkhawulokudonsa wokuthola inzuzo. Amandla we-pulse ye-laser yamanje eyi-10-beaft-watt ingama-jeules angama-300, futhi umkhawulo womonakalo ophansi we-compressor grating wenza i-beam fatture ngokuvamile ngaphezulu kwama-300 mm. Ugongolo olushayekile nge-20 ~ 30 ye-femtosecond pulse Julth kanye ne-300 mm aperture kulula ukuthwala ukuhlanekezela kwe-spatiotemporal coupling, ikakhulukazi ukuhlanekezela kwe-pulse ngaphambili. Umdwebo 1 (a) ukhombisa ukuhlukaniswa kwe-spatio-okwesikhashana kwe-pulse ngaphambili kanye nesigaba ngaphambili okubangelwa ukuhanjiswa kwe-beam, kanti kwangaphambilini kukhombisa "isihlobo" seSpatio-temporel TILT "esihlobene nalokhu. Okunye kungukuthi "i-curvature yesikhathi esinzima kakhulu" esibangelwa uhlelo lwelensi. Fig. 1 (B) Ibonisa imiphumela ye-Pulse Front Front, i-Pulse Front Front kanye ne-Bent Pulse ngaphambili ekuhlanekezelweni kwe-spatio-okwesikhashana kwensimu yokukhanya kulitshe. Ngenxa yalokhu, ukuqina okukhanyayo kuncishiswe kakhulu, okungakuvumeli ukusetshenziswa kwensimu okuqinile kwe-laser ye-super efutfu.

Fig. 1 (a) Ukutshekelwa kwe-pulse ngaphambili okubangelwa yi-prism kanye ne-grating, kanye (b) nomphumela wokuhlanekezela kwe-pulse ngaphambili inkambu yokukhanya esikhaleni

Ukulawulwa kwejubane kwe-Pulse kwe-Ultra-StrongI-Laser ye-Ultrashort
Njengamanje, imishayo yemishayo ekhiqizwa yi-conical superposition yamagagasi endiza ikhombise inani lesicelo ku-High Field Laser Physics. Uma ugongolo oludonswa yi-pulymmetric lune-pulymmetric pulymmetric Front Distribution, khona-ke ukuqina kwesikhungo sejometri sepakethe ye-X-ray yave njengoba kukhonjisiwe kuMfanekiso 2 kungavulwa amandla amahle, asheshise ama-subleluminal, futhi asheshisiwe ama-sublumiminal. Ngisho nenhlanganisela yesibuko esibonakalayo kanye nohlobo lwesigaba sokukhanya se-spatial lungakhiqiza ukwakheka kwe-spatio-yesikhashana kwe-pulserapter ye-pulse ngaphambili, bese kuveza ijubane lokuhambisa ngokungalawuleki lokulawulwa. Umphumela ongenhla ngokomzimba kanye nobuchwepheshe bayo bokushintshashintsha kungaguqula "ukuhlanekezela" kwama-pulse ngaphambili kube "bese kuthi injongo yokuguqula ijubane lokudlulisela i-laser ye-Ultra-eqinile ye-Ultra-emfushane eqinile.

Fig. 2 The (a) ihlala isheshe - ukukhanya, (b) i-sublight ehlala njalo, (c) isheshise ngokushesha - ukukhanya okukhanyayo, futhi (d) okufihliwe kwama-pulses akhiqizwa yi-superpositions atholakala esikhungweni sejometri esifundeni sasejometri

Yize ukutholwa kwe-Pulse Front Dlus Ukuhlanekezela phambilini kungukuqala kwe-laser ye-super-emfushane, kuthinteke kabanzi kanye nokuthuthukiswa kwe-laser ye-Super Ultra -futful. Isikhathi eside, akusivumeli ukugcwaliseka kwenhloso eyinhloko ye-Super Ultra-fushanezela laser - ukugxila okukhanyayo okuphezulu, futhi abaphenyi bebelokhu besebenzela ukucindezela noma ukuqeda ukuhlanekezela kwangaphambili okuhlukahlukene. Namuhla, lapho "i-Pulse yangaphambili yokuhlanekezela" iye yathuthuka yaba "i-Pulse Front Control", ithole ukulawulwa kwejubane lokudlulisela i-laser ye-super-emfushane, enikeza izindlela ezintsha zokusetshenziswa kwe-laser ye-los-physics ephezulu.