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在, not envy. The public when they see the green 激光 pointers. These 激光s are 激光 wavelength of 532nm green. They are generally used to choose the constellations. 那個 激光 works by using the green diode pumped solid state rate doubled (激光 DPSSFD). In this process, using an infrared high-power 二極管 激光 at 808 nm. It 'used to block a little pumped Nd: YVO4 generating light at 1064 nm. This is still a KTP intracavity frequency doubling crystal. This process can produce the green beam at 532 * Output power is 5mW nm.
