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carbon dioxide laser

Carbon dioxide lasers, CO2 lasers, are molecular gas lasers whose gain is based on a gas mixture of carbon dioxide (CO2), helium (He), nitrogen (N2) and hydrogen

(H2). A CO2 laser is a pumped laser

whose pump energy is generated electrically via a gas discharge with direct current, alternating current or with high frequency

. The discharge excites nitrogen molecules and sets them to a weak vibrational level, transferring their excitation energy upon impact with carbon dioxide molecules. Helium is used to discharge the lower laser level and to dissipate the heat. Other components such as hydrogen or water vapor cause the carbon monoxide to oxidize back to carbon dioxide. CO2 lasers emit in the long-wave infrared region at a wavelength of 10.6 µm, or at wavelengths in the 9 µm to 11 µm range. In most cases, average powers range from tens of watts to many kilowatts. More than 10 % of the pump power of CO2 lasers is converted into laser power. This value is higher than that of semiconductor lasers.

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Englisch: carbon dioxide laser
Updated at: 02.04.2020
#Words: 152
Translations: DE