Lanthanum gallium silicate (La₃Ga₅SiO₁₄, LGS) crystal nasa ne zuwa tripartite crystal tsarin, batu rukuni 32, sarari rukuni P₃₂₁ (Lamba: 150). LGS yana da tasiri da yawa kamar piezoelectric, electro-optical, juyi na gani, kuma ana iya amfani dashi azaman kayan laser ta hanyar doping. A 1982, Kaminskyda al. ya bayar da rahoton ci gaban doped LGS lu'ulu'u. A shekara ta 2000, Uda da Buzanov sun haɓaka lu'ulu'u na LGS tare da diamita na 3 inch da tsawon 90 mm.

LGS crystal ne mai kyau piezoelectric abu tare da yankan nau'in sifili zazzabi coefficient. Amma daban-daban daga aikace-aikacen piezoelectric, aikace-aikacen canza wutan lantarki-Optic Q-switching yana buƙatar mafi girman ingancin crystal. A 2003, Kongda al. samu nasarar girma lu'ulu'u na LGS ba tare da bayyananniyar lahani na macroscopic ta hanyar amfani da hanyar Czochralski ba, kuma sun gano cewa yanayin girma yana shafar launi na lu'ulu'u. Sun sami lu'ulu'u LGS marasa launi da launin toka kuma sun sanya LGS zuwa EO Q-switch tare da girman 6.12 mm × 6.12 mm × 40.3 mm. A cikin 2015, ƙungiyar bincike ɗaya a Jami'ar Shandong ta sami nasarar haɓaka lu'ulu'u na LGS tare da diamita 50 ~ 55 mm, tsayin 95 mm, da nauyin 1100 g ba tare da lahani na macro ba.

A cikin 2003, ƙungiyar bincike da aka ambata a sama a Jami'ar Shandong ta bar Laser katako ya ratsa ta cikin LGS crystal sau biyu kuma ya sanya farantin raƙuman ruwa na kwata don magance tasirin juyawa na gani, don haka an gane aikace-aikacen tasirin juyawa na gani na LGS crystal. Na farko LGS EO Q-switch daga nan aka yi da kuma samu nasarar amfani da Laser tsarin.

A cikin 2012, Wang da al. ya shirya wani LGS electro-optic Q-switch tare da girman 7 mm × 7 mm × 45 mm, kuma ya gane fitowar 2.09 μm pulsed Laser beam (520mJ) a cikin fitilun da aka yi amfani da su Cr, Tm, Ho: YAG Laser tsarin . A cikin 2013, 2.79 μm pulsed Laser beam (216mJ) an samu fitarwa a cikin fitilun filashin da aka yi famfo Cr, Er: YSGG Laser, tare da bugun bugun jini 14.36 ns. A cikin 2016, Mada al. An yi amfani da 5mm × 5 mm × 25 mm LGS EO Q canji a cikin Nd: LuVO4 tsarin laser, don gane yawan maimaitawa na 200 kHz, wanda shine mafi girman yawan maimaitawa na LGS EO Q-switched Laser tsarin da aka ruwaito a bainar jama'a a halin yanzu.

A matsayin EO Q-switching abu, LGS crystal yana da kyakkyawan yanayin kwanciyar hankali da babban lalacewa, kuma yana iya aiki a babban maimaitawa. Duk da haka, akwai matsaloli da yawa: (1) albarkatun LGS crystal suna da tsada, kuma babu wani ci gaba a maye gurbin gallium da aluminum wanda ya fi rahusa; (2) Ƙididdigar EO na LGS yana da ƙananan ƙananan. Don rage ƙarfin wutar lantarki mai aiki a kan yanayin tabbatar da isasshen buɗe ido, tsayin kristal na na'urar yana buƙatar haɓaka ta layi, wanda ba kawai yana ƙara farashi ba amma har ma yana ƙara asarar shigarwa.

LGS Crystal – WISOPTIC FASAHA