Ndi laser-optical Q-switched OPO laser yokhala ndi makina oyendetsa dera mkati, 1570nm wavelength, 1 ~ 20hz (yosinthika) kubwereza kubwereza kwa kugunda, ndi laser yaying'ono komanso yopepuka yomwe ingakhale gwero lowala lamtunda wautali kuyambira ma frequency apamwamba (20Hz) ndi matekinoloje oyeserera azithunzi.