Definition of laser cavity

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Photonics Dictionary

laser cavity: A means of optical confinement intended to increase the gain length of radiation prior to emission from the device. The means of optical confinement used to increase gain path length vary depending upon the properties of the beam desired within the lasing medium. High light intensities occur within a laser cavity and dielectric mirrors coated for the lasing wavelength are used.The position and curvature of the optical cavity elements may be altered in order to optimize the laser performance as needed for a particular application.

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