Abstract

One of the unique features of the quantum-cascade-laser-seeded, nanosecond-pulse CO2 laser, invented for the purpose of generation of extreme UV by laser-produced-plasma, is a robust synthesis of arbitrary pulse waveforms. In the present Letter we report on experimental results that are, to our best knowledge, the first demonstration of such functionality obtainable from nanosecond-pulse CO2 laser technology. An online pulse duration adjustment within 10–40 ns was demonstrated, and a few exemplary pulse waveforms were synthesized, such as “tophat,” “tailspike,” and “leadspike” shapes. Such output characteristics may be useful to optimize the performance of LPP EUV source.

© 2016 Optical Society of America

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