Lwm cov khoom siv uas tsim nyog rau SHG hauv nruab nrab IR yog Gallium Selenide (GaSe) uas tsis yog-linear optical ib leeg siv lead ua.GaSe crsytals sib txuas cov coefficient loj uas tsis yog-linear, qhov kev puas tsuaj loj thiab ntau qhov pom tseeb.Qhov zaus-doubling zog ntawm GaSe tau kawm nyob rau hauv lub wavelength ntau ntawm 6.0 µm thiab 12.0 µm
GaSe crystals muaj qhov tsis tshua muaj Mohs hardness, uas ua rau GaSe tsis yooj yim heev thiab tshem tawm muaj peev xwm siv kev kho tshuab lossis txheej txheej.
GaSe yog qhov zoo tshaj plaws rau kev siv hluav taws xob thiab kho qhov muag.