The gas, liquid, or solid through which light energy is passed to create a laser beam, contained within the optical resonant chamber, is known as ________.

Name: The gas, liquid, or solid through which light energy is passed to create a laser beam, contained within the optical resonant chamber, is known as ________.
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The laser medium, also known as the gain medium or lasing medium, is the material used in a laser to amplify light by stimulated emission. It can be in the form of a gas, liquid, or solid.

The Gas, Liquid, or Solid Through Which Light Energy Is