I muri i te kotahi tau o te whakapau kaha, kua tipu matoutioata GaSeme te kounga pai i angitu.
Ka taea e taatau hangarau te whakaratoGaSekaraihe me te tuwhera nui me te matotoru kikokore.
Gallium Selenide (GaSe) kore-raina whatu whatu kotahi tioata, te whakakotahi i te whakarea-kore-raina nui, he paepae kino nui me te whanui whanui.He mea tino pai mo te SHG i waenganui-IR.Nga āhuatanga auau-ruarua oGaSei akohia i te awhe roangaru i waenga i te 6.0 µm me te 12.0 µm.GaSekua pai te whakamahi mo te SHG pai o te laser CO2 (tae atu ki te 9% te hurihanga);mo te SHG o te CO, CO2 me te matū DF-laser (l = 2.36 µm) radiation;te hurihanga o te CO me te CO2 laser radiation ki te awhe e kitea ana;whakangaonga puhoi pokarekare ma te whakakotahi i te auau rereke o te Neodymium me te taiaho waikano infrared ranei (F-)-pokapū taiaho pire;OPG hanga marama i roto i te 3.5–18 µm;terahertz (T-hihi) whakangao iraruke.Kare e taea te tapahi tioata mo etahi koki e rite ana ki te wahanga na te mea he hangahanga rawa (wehea ki te (001) rererangi) e whakatiki ana i nga waahi tono.