Muva nje, lesi sikhungo se-Physics esisetshenzisiwe se-Russian Academy of Scienced selethe isikhungo sama-exawatt ukuthola isifundo esikhanyayo (ama-xcels), uhlelo lokucwaninga lwamadivayisi amakhulu esayensi ngokusekelwe kakhuluAma-Lasers Amandla Aphakeme. Le phrojekthi ifaka ukwakhiwa komuntu kakhuluI-Laser ephezulu yamandlaKususelwa kubuchwepheshe be-Optical Parametric Conple FULSE I-APPLISE COUTY ku-Apertice Potassium Dideaterium Phosphate Phosphate (DKDP, Chemical formula KD2PO4) amakristalu, ngokukhishwa okuphelele okuphelele kwama-600 PW Power Pulses. Lo msebenzi uhlinzeka ngemininingwane ebalulekile kanye nokutholakele kocwaningo mayelana nephrojekthi yeXcels nezinhlelo zayo ze-laser, ezichaza izinhlelo zokusebenza kanye nemithelela engaba khona ehlobene nokusebenzisana kwensimu ekhanyayo enamandla.
Uhlelo lweXcels lwahlongozwa ngo-2011 ngenhloso yokuqala yokuthola amandla aphezului-laserUkukhishwa kwe-Pulse kwe-200 PW, njengamanje kuthuthukiswe ku-600 PW. -KuthileUhlelo lwe-LaserSithembela kubuchwepheshe obukhulu obuthathu:
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Ukufaniswa kwesigaba se-Ultra-ebanzi kutholakala kabanzi kumakristalu amaningi futhi kusetshenziswa e-OPCPA Femtosecond Lasers. Amakristalu e-DKDP asetshenziswa ngoba ukuphela kwento etholakala ekusebenzeni okungatshalwa kumasentimitha e-aperture futhi ngasikhathi sinye abe nezimpawu ezamukelekayo zokusekela ukufakwa kwamandla amaningi we-PWamachweba. Kutholakala ukuthi lapho i-DKDP Crystal idonswa ukukhanya imvamisa ye-ND Glass Laser, uma i-carrier wavelength ye-Amplified Pulse ingu-910 NM, imigomo yokuqala yokwandiswa kwe-taylor ye-wave vector mismatch yi-0.
Umdwebo 1 yisakhiwo esihleli sohlelo lwe-Xcels Laser. Isiphelo sangaphambili sikhiqize i-chirtosecond julsecth ephethe i-wavelelth ephakathi ne-910 NM (1.3 kuMdwebo 1) no-1054 NM nanosecond i-laser laser (1.1 no-1,2 kuMfanekiso 1). Isiphelo sangaphambili futhi siqinisekisa ukuvumelanisa kwalezi zipolses kanye namandla adingekayo kanye namapharamitha e-spatiotemporal. I-opcpa ephakathi nendawo esebenza ngenani eliphakeme lokuphindaphinda (1 hz) likhulisa i-chirped pulse kumashumi ama-joules (2 kuMfanekiso 1). I-pulse iphinde yandiswa yi-booster opcpa ibe ugongolo olulodwa lwe-kilojoule futhi ihlukaniswe izimbali ezi-12 ezifanayo (4 kuMfanekiso 1). Ku-OPCPA yokugcina eyi-12, i-pulses ekhanyayo engu-12 yandiswa ku-kilojoule level (5 kuMfanekiso 1) bese icindezelwa ngokugcwaliswa kwe-12 Compressions (GC Of Ku-6 kuMfanekiso 1). Isihlungi sokuhlakazwa se-Acousto-Optic sokuhlakazeka sisetshenziswa ekugcineni kokulawula ukuqondiswa kweqembu ngokuqondile kanye nokuhlakazeka okuphezulu kwe-oda, ukuze uthole ububanzi obuncane bokugeleza. I-pulse spectrum inesimo se-supergauss ecishe ibe yi-12, kanye ne-bandwidth ebonakalayo e-1% yenani eliphakeme yi-150 nm, ehambelana nomkhawulo we-fourier transform umkhawulo we-pulth of 17 fs. Uma ubheka isinxephezelo sokuhlakazwa okungaphelele nobunzima bokunxeshezelwa kwesigaba esingajwayelekile kuma-amplifiers parametric, ububanzi be-pulse elindelekile bungama-20 fs.
Ama-Xcels laser azosebenzisa iziteshi ezimbili ze-Ufl-2m neody amamojula we-Laser Frequency amamojula (ama-3 kuMdwebo 1), lapho iziteshi eziyi-13 zizosetshenziselwa ukupompa i-booster apcpa ne-12 Final Opcpa. Iziteshi ezintathu ezisele zizosetshenziswa njengoba izimele ze-nanosecond kilojond pulsedImithombo ye-Laserkwezinye izivivinyo. Inqunyelwe umkhawulo wokuphuka kwe-optical we-DKDP amakristalu, ukuvalwa kwe-irradiation of the Pulse okugcwele kusethelwe ku-1.5 GW / CM2 ngesiteshi ngasinye kanti ubude besikhathi kungu-3.5 NS.
Isiteshi ngasinye se-Xcels Laser sikhiqiza ama-pulses ngamandla angama-50 pw. Ingqikithi yeziteshi eziyi-12 zinikezela ngamandla okukhishwa kwemali engu-600 PW. Egumbini eliphambili eliqondiwe, okuphezulu kakhulu kwesiteshi ngasinye ngaphansi kwezimo ezinhle kungu-0.44 × 1025 w / cm2, kucatshangelwa ukuthi izinto ezigxile ezisetshenziselwa ukugxila. Uma ishayela lesiteshi ngasinye libuye licindezelwe ku-2.6 FS ngenqubo ye-post-compression, amandla ahambisanayo okuphuma azokwanda abe ngu-230 pw azokwanda afinyelela ku-230 pw, ahambelana nokukhanya okukhanyayo kwe-2.0 × 1025 w / cm2.
Ukufeza ukuqina okukhanyayo okukhanyayo, okuphumayo okungu-600 pw, ama-pulses akhanyayo eziteshini eziyi-12 azogxila ejometry yemisebe ngayinye yeziphuphu, njengoba kukhonjisiwe kuMfanekiso 2. Uma isigaba ngasinye se-pulse sikhiyiwe futhi sivumelaniswe, ukuqina okuhlangene okukhona kuzokwenyuswa ku-3.2 × 1026 W / CM2. Ngokungeziwe egumbini eliphambili eliqondiwe, iphrojekthi ye-XCELS ifaka phakathi ama-Laboratories angu-10 angu-10, ngamunye athola okukodwa noma okuthe xaxa ukuthola izivivinyo. Usebenzisa le nkambu enamandla kakhulu yokukhanya, ama-Xcels Project ahlela ukwenza izivivinyo ngezigaba ezine: izinqubo ze-Quantud Electrodynamics emasimini amakhulu ama-laser; Ukukhiqizwa nokusheshisa kwezinhlayiya; Isizukulwane semisebe ye-electromagnetic yesibili; I-Laboratory Astrophysics, izinqubo eziphezulu zamandla okuqina kanye nocwaningo lokuxilonga.
Fig. 2 Ukugxila kwejometri egumbini eliqondiwe eliphambili. Ukucacisa, isibuko se-parabolic sikaNgqongo 6 sisethwe kusobala, futhi imishayo yokufaka nokukhipha ikhombisa iziteshi ezimbili kuphela 1 no-7
Umdwebo 3 ukhombisa ukwakheka kwendawo yendawo ngayinye esebenzayo yohlelo lwe-Xcels Laser esakhiweni sokuhlola. Ugesi, amaphampu we-vacuum, ukwelashwa kwamanzi, ukuhlanzwa kanye nomoya womoya atholakala engaphansi. Indawo ephelele yokwakha ingaphezu kwama-24,000 m2. Ukusetshenziswa kwamandla okuphelele kumayelana ne-7.5 MW. Isakhiwo Sokuhlola siqukethe uhlaka lwangaphakathi olungaphakathi oluyize kanye nesigaba sangaphandle, ngalinye lakhiwe ngezisekelo ezimbili ezithosiwe. I-vacuum nezinye izinhlelo ezikhohlisayo ezifakiwe zifakiwe kwisisekelo esizohlukaniswa nge-vibrate, ukuze ukugcwala kokuphazamiseka kudluliselwe ohlelweni lwe-laser ngokusebenzisa isisekelo nokusekelwa kuncishiswa kungaphansi kwe-10-10 G2 / hz ngobubanzi be-1-200 Hz. Ngaphezu kwalokho, inethiwekhi yezimpawu zesethenjwa se-Geodesic isethwe ehholo laseLaser ukubheka ngokuhlelekile ukwehla komhlaba kanye nemishini.
Iphrojekthi ye-XCELS ihlose ukudala indawo enkulu yocwaningo lwesayensi esekelwe kuma-lasers aphezulu kakhulu we-Peak Power. Isiteshi esisodwa sohlelo lwe-Xcels Laser lunganikeza amandla akhanyayo agxile kaningana aphakeme kaningi kune-1024 w / cm2, engadluliswa yi-1025 w / cm2 ene-post-compression Technology. Ngokugxila okugxile eziteshini ezivela eziteshini eziyi-12 ohlelweni lwe-laser, ukuqina okusondele ku-1026 W / cm2 kungatholakala noma ngaphandle kokucindezela ngemuva kanye nokukhiya kwesigaba. Uma ukuvumelanisa kwesigaba phakathi kweziteshi kukhiyiwe, ukuqina kokukhanya kuzoba njalo kaningana. Usebenzisa la ma-Pulse we-Pulse Pulse kanye nesakhiwo se-munzi lesiteshi esiningi, indawo ye-xcels yesikhathi esizayo izokwazi ukwenza izivivinyo ngokuqina okukhulu kakhulu, ukusatshalaliswa kwensimu ekhanyayo, nokuthola ukuxhumanisa kwe-laser ama-laser ama-laser kanye nemisebe yesibili. Lokhu kuzodlala indima eyingqayizivele emkhakheni we-super-stronglectromagnetic field physics yokuhlola.
Isikhathi sePosi: Mar-26-2024