Ob hom Er: iav lasers, ib tug yog siv laser pas nrig ua hauj lwm nruab nrab, lwm yam yog siv bonded er: iav kom tau txais nce nruab nrab, Q-swith thiab tso zis coupler tag nrho, uas tam sim no zoo ntawm kev kho yooj yim thiab ruaj khov. kev tsim kho.
Raws li qhia hauv qab no: