Source: wikibot/output-coupler
= Output coupler
{wiki=Output_coupler}
An output coupler is an essential component used in laser systems and certain types of optical cavities. It serves the purpose of allowing a portion of the light generated within the laser cavity to exit while reflecting the remainder back into the cavity to sustain the lasing process. Output couplers are typically partially reflective mirrors, with specific reflectivity characteristics tailored to the requirements of the laser.