Jefferson Science Associates, LLC

Los Alamos National Security, LLC

Guy Wilson

David R Douglas

Stephen V Benson

Dinh Nguyen

Christopher Tennant

Shukui Zhang

A method of bunch length compression method for a free electron laser (FEL) that avoids parasitic compressions by 1) applying acceleration on the falling portion of the RF waveform, 2) compressing using a positive momentum compaction (R&#x3e;0), and 3) compensating for aberration by using nonlinear magnets in the compressor beam line.

Bunch length compression method for free electron lasers to avoid parasitic compressions

An apparatus and method for enhancing pulse contrast ratios for drive lasers and electron accelerators. The invention comprises a mechanical dual-shutter system wherein the shutters are placed sequentially in series in a laser beam path. Each shutter of the dual shutter system has an individually operated trigger for opening and closing the shutter. As the triggers are operated individually, the delay between opening and closing first shutter and opening and closing the second shutter is variable providing for variable differential time windows and enhancement of pulse contrast ratio.

Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators

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Norfolk, VA, United States of America

Guy Wilson