4. Explain the processes of lasing in the Co2 laser. What is the function of Nitrogen,...

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4. Explain the processes of lasing in the Co2 laser. What is thefunction of Nitrogen, and Helium in the gas mixture of the co2laser?

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Carbon dioxide lasers are gas lasers which emit infrared radiation They are used for a variety of high power industrial applications As discussed in the Lasers Selection Guide all lasers consist of three components an energy source also known as a pump a gain or laser medium and an optical resonator These components are labeled in the diagram below The pump serves to provide energy which is amplified by the gain medium This energy is eventually converted into light and is reflected through the optical resonator which then emits the final output beam Electrical current serving as the laser pump which excites the gas medium A mixture of gases serving as the gain medium comprised of carbon dioxide nitrogen hydrogen and helium The carbon dioxide nitrogen and helium make up the vast majority of the mixture although the specific concentrations vary See Answer

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