Tsarin crystal na lithium tantalate (LiTaO₃, LT a takaice) yayi kama da LN crystal, mallakar tsarin kristal mai siffar sukari, 3m kungiyar maki, R3c rukunin sararin samaniya. LT crystal yana da kyau kwarai piezoelectric, ferroelectric, pyroelectric, acousto-optic, electro-optic da maras gani na gani Properties. LT crystal kuma yana da barga na zahiri da sinadarai, mai sauƙin samun girman girma da kristal guda mai inganci. Ƙofar lalacewa ta Laser ya fi LN crystal girma. Don haka LT crystal an yi amfani da shi sosai a cikin na'urorin raƙuman ruwa na saman.

 Lu'ulu'u na LT da aka saba amfani da su, kamar lu'ulu'u na LN, ana samun sauƙin girma ta hanyar Czochralski a cikin platinum ko iridium crucible ta amfani da ƙarancin lithium na haɗin haɗin ruwa mai ƙarfi. A cikin 1964, Bell Laboratories ya sami kristal guda LT, kuma a cikin 2006, Ping Kang ya girma diamita 5-inch LT crystal.da al.

 A cikin aikace-aikacen electro-optic Q-modulation, LT crystal ya bambanta da LN crystal a cikin cewa γ.₂₂ kadan ne. Idan ta ɗauki yanayin wucewar haske tare da axis na gani da juzu'i mai jujjuyawa wanda yayi kama da LN crystal, ƙarfin ƙarfin aikinsa ya ninka fiye da sau 60 na LN crystal ƙarƙashin yanayi iri ɗaya. Saboda haka, lokacin da LT crystal ake amfani da electro-optic Q-modulation, zai iya amfani da biyu crystal matching tsarin kama da RTP crystal tare da x-axis a matsayin haske shugabanci da y-axis a matsayin lantarki filin shugabanci, da kuma yin amfani da babban electro-optic. coefficient γ₃₃ kuma γ₁₃. Babban buƙatun akan ingancin gani da machining na lu'ulu'u na LT suna iyakance aikace-aikacen sa na Q-modulation electro-optic.

LT (LiTaO3) crystal-WISOPTIC