He ʻāpana optical kūikawā ke aniani keleawe, i hoʻohana nui ʻia i ka ʻenehana laser, a ʻo kona kumu kumu he keleawe a i ʻole ka hui keleawe. Hōʻike ke aniani keleawe i ke kukuna laser ma o kona ʻili aniani kiʻekiʻe e alakaʻi, kālele, a hoʻololi paha i ke kuhikuhi o ke kukuna laser. Ma muli o kona conductivity thermal kiʻekiʻe, nā waiwai mechanical maikaʻi a me ke kūpaʻa i ka palaho, loaʻa i ke keleawe kahi pono hoʻohana kūikawā i nā ʻōnaehana laser.
Ua kālele ʻia ka nalu i ka hāʻawi ʻana i nā huahana optical kiʻekiʻe no 20 mau makahiki