Study And Analysis Growing Of E.Coil Bacteria And Effected Of HeNe Laser

Abstract

Laser is a light amplification by stimulated emission of radiation. It is risky to hazardous laser radiation to person exposed to it. Even if the low power laser beams can be unsafe to human being eyesight. Helium Neon (HeNe) laser is gas laser whose gain medium includes a mixture of helium and neon (10:1) inside of a small bore capillary tube. It is usually excited by a DC electrical discharge and the pressure inside the tube is 1 mm of Hg. The most widely used HeNe laser operates at a wavelength of 632.8 nm in the red part of the visible spectrum. In this paper, the effected of HeNe laser on the growth of Escherichia coli (E.coil) bacteria has been studied with considering the radiation of HeNe laser is 􀟣=632.8 nm and the distance between HeNe and E.coil bacteria 25Cm. The result shown that E.coil Bacteria has not been effected because of the power which is used 1Mw.