Li-switches tsa Passive Q kapa li-absorbers tse sarolohang li hlahisa matla a matla a laser pulses ntle le ts'ebeliso ea li-electro-optic Q-switches, ka hona li fokotsa boholo ba sephutheloana le ho felisa phepelo ea motlakase o phahameng.Co2+:MgAl2O4ke thepa e batlang e le ncha bakeng sa passiv Q-switching ka lasers emitting ho tloha 1.2 ho 1.6μm, haholo-holo, bakeng sa leihlo-bolokehileng 1.54μm Er: khalase laser, empa hape e sebetsa ho 1.44μm le 1.34μm laser wavelengths.Spinel ke kristale e thata, e tsitsitseng e benyang hantle.