He electro-optical Q-switched OPO laser me ka ʻōnaehana kaʻapuni kaʻapuni i loko, 1570nm hawewe lōʻihi, 1 ~ 20hz (hoʻololi ʻia) pulse repetition rate, he laser liʻiliʻi a māmā e hiki ke lilo i kumu kukui kūpono o ka lōʻihi lōʻihi. kiʻekiʻe alapine (20Hz) a me photoelectric countermeasure techn.