Welding with a supermodulated laser

摘要

Nd:YAG lasers for materials processing generally fallrninto two categories: high-power continuous-wave (CW) lasers, in powers from around 500W to 6kW, and pulsed lasers with average powers up to about 500W. The output from a conventional pulsed laser would typically be similar to that shown in Figure la, with short peaks of several kilowatts, but much lower average power. Continuous-wave lasers also often can operate in a 'modulated' mode, where the CW laser light is delivered in gated pulses of varying frequency, up to the maximum CW power produced (see Figure lb).