Abstract
A simple technique is demonstrated for preventing microchannel plate (MCP) response to scattered laser light in a multiphoton ionization experiment. The MCP is gated on after the laser pulse, with a turn-on time of less than 1 μs, by switching its cathode from 0 to −1900 V. The high-voltage pulse circuit uses power MOSFETs and was designed according to the procedure of Baker and Johnson [Electron. Lett. 29, 56 (1993)].
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