(Quality switch) An optical valve in a laser that prevents light from transmitting outside the resonating cavity. The Q switch allows for the build-up of energy before it is switched open to allow light to move out.
"Q switch." YourDictionary, n.d. Web. 23 June 2018. <http://www.yourdictionary.com/q-switch>.
Q switch. (n.d.). Retrieved June 23rd, 2018, from http://www.yourdictionary.com/q-switch
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