Energy beam exposures in powder bed fusion
AssigneeRenishaw PLC
InventorsJohn WILKES, Paul ZAWALNYSKI, Timothy Charles Edward PROBERT
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Abstract
A laser including a gain medium, a pump for pumping the gain medium, a power circuit and an inertial load located between the power circuit and the pump. The power circuit may include a switching power amplifier for generating a pulse-width modulated signal to the inertial load. The laser may be used in a powder bed fusion apparatus. A powder bed fusion apparatus may include a laser, the laser including a gain medium, a pump for pumping the gain medium and a controller for controlling the pump. The controller may be arranged to control the pump such that a response time of the laser is less than 17 microseconds.
Claims15
A laser comprising a gain medium, a pump for pumping the gain medium, a power circuit and an inertial load located between the power circuit and the pump, wherein the power circuit comprises a switching power amplifier for generating a pulse-width modulated signal to the inertial load.
A powder bed fusion apparatus comprising a laser, the laser comprising a gain medium, a pump for pumping the gain medium and a controller for controlling the pump, wherein the controller is arranged to control the pump such that a response time of the laser is less than 17 microseconds.
Dependencies are inferred from the claim text.