I-Lanthanum gallium silicate (La₃Ga₅SiO₁₄, LGS) ikristalu ingeye-tripartite crystal system, iqembu lamaphuzu 32, iqembu lesikhala P₃₂₁ (No.150). I-LGS inemiphumela eminingi efana ne-piezoelectric, i-electro-optical, i-optical rotation, futhi ingasetshenziswa njengempahla ye-laser ngokusebenzisa i-doping. Ngo-1982, uKaminskyet al. ibike ukukhula kwamakristalu e-LGS ane-doped. Ngo-2000, amakristalu e-LGS anobubanzi obuyi-intshi engu-3 nobude obungama-90 mm athuthukiswa ngu-Uda noBuzanov.

Ikristalu ye-LGS iyinto enhle kakhulu ye-piezoelectric enohlobo lokusika lwe-coefficient yokushisa eyiziro. Kodwa ngokungafani nezinhlelo zokusebenza ze-piezoelectric, izinhlelo zokusebenza ze-electro-optic Q-switching zidinga ikhwalithi ephezulu yekristalu. Ngo-2003, uKonget al. ikhule ngempumelelo amakristalu e-LGS ngaphandle kokukhubazeka okusobala okukhulu ngokusebenzisa indlela ye-Czochralski, futhi yathola ukuthi umkhathi wokukhula uthinta umbala wamakristalu. Bathole amakristalu e-LGS angenambala futhi ampunga futhi benza i-LGS ibe yi-EO Q-switch enosayizi ongu-6.12 mm × 6.12 mm × 40.3 mm. Ngo-2015, iqembu elilodwa locwaningo eNyuvesi yaseShandong lakhula ngempumelelo amakristalu e-LGS anobubanzi obungu-50 ~ 55 mm, ubude obungama-95 mm, nesisindo esingu-1100 g ngaphandle kokukhubazeka okusobala okukhulu.

Ngo-2003, iqembu locwaningo elishiwo ngenhla eNyuvesi yaseShandong lavumela ugongolo lwe-laser kudlula ikristalu ye-LGS kabili futhi lafaka ipuleti le-quarter wave ukuze limelane nomphumela wokuzungezisa amehlo, ngaleyo ndlela laqaphela ukusetshenziswa komphumela wokuzungezisa we-LGS crystal. I-LGS EO Q-switch yokuqala yenziwa futhi yasetshenziswa ngempumelelo ohlelweni lwe-laser.

Ngo-2012, uWang et al. ilungise i-LGS electro-optic Q-switch enosayizi ongu-7 mm × 7 mm × 45 mm, futhi yabona ukuphuma kwe-2.09 μm pulsed laser beam (520 mJ) ohlelweni lwe-laser oluphahlwe yi-flash-Cr, Tm,Ho:YAG . Ngo-2013, 2.79 μm pulsed laser beam (216 mJ) okukhiphayo kwafinyelelwa ku-flash-lamp pumped Cr, Er:YSGG laser, enobubanzi be-pulse 14.36 ns. Ngo-2016, uMaet al. isebenzise inkinobho engu-5 mm × 5 mm × 25 mm LGS EO Q kusistimu ye-laser ye-Nd:LuVO4, ukuze ibone izinga lokuphindaphinda elingu-200 kHz, okuyizinga eliphezulu lokuphindaphinda lesistimu ye-laser eshintshiwe ye-LGS EO Q ebikwe esidlangalaleni okwamanje.

Njengempahla ye-EO Q-switching, i-LGS crystal inokuzinza okuhle kwezinga lokushisa kanye nomkhawulo womonakalo omkhulu, futhi ingasebenza ngemvamisa yokuphindaphinda okuphezulu. Nokho, kunezinkinga eziningana: (1) Izinto ezingavuthiwe ze-LGS crystal ziyabiza, futhi akukho mpumelelo ekushintsheni i-gallium nge-aluminium eshibhile; (2) I-EO coefficient ye-LGS incane uma kuqhathaniswa. Ukuze kuncishiswe i-voltage yokusebenza esakhiweni sokuqinisekisa ukuvuleka okwanele, ubude bekristalu bedivayisi budinga ukwenyuswa ngokomugqa, okungagcini nje ngokukhuphula izindleko kodwa futhi kwandise ukulahlekelwa kokufaka.

I-LGS Crystal – WISOPTIC TECHNOLOGY