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Output coupler
Additional recommended knowledgeAn output coupler (OC) is a partially reflective mirror used in lasers to extract a portion of the laser beam from the optical resonator. Lasers operate by reflecting light between two or more mirrors which have an active laser medium between them. The medium amplifies the light by stimulated emission. For lasing to occur, the gain of the active medium must be larger than the total loss, which includes both unwanted effects such as absorption, and the intentional release of energy through the output coupler. In other words the laser must attain threshold. There are two important properties of the output coupler:
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Output_coupler". A list of authors is available in Wikipedia. |