A Q-switch is 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. There are literally thousands of laser products that we can provide that include a Q-switch. Our company was incorporated in 2001. We are located in Clinton, MA and offer OEM's, system integrators and end users high performance replacement parts, assemblies, components, laser sources and systems. Browse our site and view all of our inventory. Our selection of products is comprehensive. Call us at (978) 368-6126 and let us assist you in the purchase of your Q-switch.