Article | REF: AF3271 V1

Gas lasers

Author: René JOECKLÉ

Publication date: January 10, 2000

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AUTHOR

  • René JOECKLÉ: Former head of the Lasers, Optronics and Sensors division at the Franco-German Research Institute in Saint-Louis (ISL)

 INTRODUCTION

Gas lasers were discovered almost simultaneously with solid-state lasers: in the infrared, the CO 2 laser was discovered by Patel. In the visible, the helium-neon (He-Ne) laser immediately enjoyed great development. These lasers require relatively simple technical equipment: excitation is obtained by a high-voltage electrical discharge in a low-pressure gas (generally a sealed tube in the case of the He-Ne laser). Laser radiation is generally continuous, which was initially the unique feature of gas lasers.

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Gas lasers