I-Potassium dideuterium phosphate (I-DKDP) iwuhlobo lwekristalu ye-optical engaqondile enezakhiwo ezinhle kakhulu ze-electro-optic ezakhiwa ngo-1940s. Isetshenziswa kabanzi ku-optical parametric oscillation, i-electro-optic Q- ukushintsha, i-electro-optic modulation nokunye. I-DKDP crystal ineizigaba ezimbili: isigaba se-monoclinic kanye nesigaba se-tetragonal. I wusizo Ikristalu ye-DKDP iyisigaba se-tetragonal okungesika-D_2d-42m iqembu lephoyinti kanye ne-ID¹²_2d -42d iqembu lesikhala. I-DKDP iyi-isomorphicisakhiwo i-potassium dihydrogen phosphate (KDP). I-Deuterium ithatha indawo ye-hydrogen kukristalu lwe-KDP ukuze iqede umthelela wokumuncwa kwe-infrared okubangelwa ukudlidliza kwe-hydrogen.Ikristalu ye-DKDP ene high deuteration ratio ibe okungcono electro-optical izakhiwo futhi kangcono izakhiwo ezingaqondile.

Kusukela 1970s, ukuthuthukiswa laser Iphakathi Cukuhlawuliswa Fubuchwepheshe be-usion (ICF) bukhuthaze kakhulu ukuthuthukiswa kochungechunge lwamakristalu e-photoelectric, ikakhulukazi i-KDP ne-DKDP. Njengoba i i-electro-optical kanye ne-nonlinear optical material esetshenziswa ku I-ICF, ikristalu kuyinto okudingekayo ukuze kube nokudluliswa okuphezulu kuma-wave bands kusuka eduze ne-ultraviolet ukuya eduze kwe-infrared, i-electro-optical coefficient enkulu kanye ne-nonlinear coefficient, i-threshold yomonakalo omkhulu, kanye uku ekwaziyo ukuba lungiselelad phakathi indawo enkulu futhi nge izinga eliphezulu le-optical. Kuze kube manje, amakristalu e-KDP ne-DKDP kuphela ukuhlangabezana nese izidingo.

I-ICF idinga usayizi we-DKDP ingxenye kuze kufike ku-400-600 mm. Ngokuvamile kuthatha iminyaka engu-1 ~ 2 ukukhulaIkristalu ye-DKDP ene usayizi omkhulu kangaka ngendlela yendabuko kwe ukupholisa isixazululo samanzi, ngakho-ke umsebenzi omningi wocwaningo sewenziwe zuza ukukhula okusheshayo kwamakristalu e-DKDP. Ngo-1982, uBespalov et al. wafunda ubuchwepheshe bokukhula ngokushesha kwekristalu ye-DKDP enesiphambano esingu-40 mm×40 mm, futhi izinga lokukhula lifinyelele ku-0.5-1.0 mm/h, okwakuwuhlelo lobukhulu obungaphezu kwendlela evamile. Ngo-1987, uBespalov et al. ikhule ngempumelelo amakristalu ekhwalithi ephezulu ye-DKDP nge ubukhulu 150 mm×150 mm×80 mm nge ngokusebenzisa indlela yokukhula ngokushesha efanayo. Ngo-1990, uChernov et al. ithole amakristalu e-DKDP anesisindo esingama-800 g ngokusebenzisa iphuzu-indlela yembewu. Izinga lokukhula lamakristalu e-DKDP ku Z-isiqondiso sifinyeleled 40-50 mm/d, nalabo abangaphakathi X- futhi Y-izikhombisi-ndlela finyelelad 20-25 mm/d. Lawrence Livermore Kuzwelonke ILabhorethri (i-LLNL) yenze ucwaningo oluningi ekulungiseni amakristalu osayizi omkhulu we-KDP namakristalu e-DKDP ngezidingo ze-N.ngokwedlulele I-Ignition Facility (NIF) wase-USA. Ngo-2012,Abacwaningi baseShayina bathuthukile ikristalu ye-DKDP enosayizi ongu-510 mm×390 mm×520 mm okuvela kuyo ingxenye yohlobo lwe-DKDP eluhlaza II ukuphindaphinda kabili ngosayizi 430 mm kwaba yenziwe.

Izinhlelo zokusebenza ze-Electro-optical Q-switching zidinga amakristalu e-DKDP anokuqukethwe okuphezulu kwe-deuterium. Ngo-1995, Zaitseva et al. kukhule amakristalu e-DKDP anokuqukethwe okuphezulu kwe-deuterium nezinga lokukhula lika-10-40 mm/d. Ngo-1998, Zaitseva et al. kutholwe amakristalu e-DKDP anekhwalithi enhle yokubona, ukuminyana okuphansi kokugudluka, ukufana okuphezulu kwe-optical kanye nomkhawulo womonakalo omkhulu ngokusebenzisa indlela yokuhlunga eqhubekayo. Ngo-2006, indlela yokugeza izithombe yokutshalwa kwekristalu ephezulu ye-deuterium DKDP yayinelungelo lobunikazi. Ngo-2015, amakristalu e-DKDP ane i-deuteration ratio ka-98% nosayizi we-100 mm×105 mm×96 mm akhuliswe ngempumelelo ngephoyinti-imbewu indlela eShandong University waseShayina. Thkuyinto I-crystal ayinaso isici esikhulu esibonakalayo, futhi yayo i-refractive index asymmetry ingaphansi kuka-0.441 ppm. Ngo-2015, ubuchwepheshe bokukhula ngokusheshaikristalu ye-DKDP nge-deuteration ratio kokungu-90% yasetshenziswa okokuqala eChina ukulungiselela Q-shintshaimpahla, okufakazela ukuthi ubuchwepheshe obukhula ngokushesha bungasetshenziswa ukulungisa 430 mm ububanzi be-DKDP electro-optical Q-switching ingxenye ifunwa yi-ICF.

Ikristalu ye-DKDP ithuthukiswe yi-WISOPTIC (Deuteration > 99%)

Amakristalu e-DKDP adalulwe emkhathini isikhathi eside azokwazi babe ubuso be-delirium kanye nebulization, okuzoholela ekunciphiseni okukhulu kwekhwalithi ye-optical kanye nokulahlekelwa ukusebenza kahle kokuguqulwa. Ngakho-ke, kuyadingeka ukuvala i-crystal lapho ulungiselela i-electro-optic Q-switch. Ukuze unciphise ukubonakaliswa kokukhanyaku iwindi lokuvalas ye-Q-switch kanye use izindawo eziningi zekristalu, uketshezi oluhambisana nenkomba ye-refractive luvame ukujovwa esikhaleni phakathi kwekristalu nefasitelas. Ngisho wngaphandle anti-enamathela elikhanyayo, ti-transmittance kungaba njalo inyuke isuka ku-92% yaya ku-96% -97% (wavelength 1064 nm) usebenzisa Isixazululo sokufanisa inkomba ye-refractive. Ngaphezu kwalokho, ifilimu yokuzivikela nayo isetshenziswa njengesilinganiso sobufakazi bomswakama. Xionget al. walungisa uSiO₂ ifilimu ye-colloidal nge imisebenzi ye umswakama-ubufakazi kanye ne-anti-reflectiku. Ukudluliselwa kufinyelele ku-99.7% (i-wavelength 794 nm), futhi umkhawulo womonakalo we-laser ufinyelele ku-16.9 J/cm² (i-wavelength 1053 nm, ububanzi be-pulse 1 ns). Wang Xiaodong et al. ulungisiwe a ifilimu evikelayo nge usebenzisa i-polysiloxane glass resin. Umkhawulo womonakalo we-laser ufinyelele ku-28 J/cm² (i-wavelength 1064 nm, ububanzi be-pulse 3 ns), kanye nezakhiwo ezibonakalayo zahlala zizinzile endaweni ezungezile ezinomswakama ohlobene ongaphezu kuka-90% izinyanga ezingu-3.

Ihlukile ku-LN crystal, ukuze unqobe ithonya le-birefringence yemvelo, Ikristalu ye-DKDP ngokuvamile isebenzisa ukuguquguquka kwe-longitudinal. Lapho kusetshenziswa i-electrode eyindandatho, ubude bekristalu ku-ugongolo isiqondiso kufanele sibe sikhulu kunekristalu’s ububanzi, ukuze bathole insimu kagesi efanayo, okuyinto ngakho-ke kwandisa i ukumuncwa ukukhanya ku-crystal futhi umphumela oshisayo uzoholela ekudambisweni kwe-depolarization at amandla amaphakathi aphezulu.

Ngaphansi kwesidingo se-ICF, ubuchwepheshe bokulungiselela, ukucubungula kanye nokusetshenziswa kwekristalu ye-DKDP kuye kwathuthukiswa ngokushesha, okwenza ama-DKDP electro-optic Q-switches asetshenziswe kabanzi ekwelapheni nge-laser, ubuhle be-laser, umbhalo we-laser, ukumaka nge-laser, ucwaningo lwesayensi. kanye neminye imikhakha ye-laser application. Nokho, ubuxhwanguxhwangu, ukulahleka kokufakwa okuphezulu kanye nokungakwazi ukusebenza ezingeni lokushisa eliphansi kuseyizingqinamba ezivimbela ukusetshenziswa okubanzi kwamakristalu e-DKDP.

Iseli ye-DKDP Pockels eyenziwe yi-WISOPTIC