期刊
OPTICS LETTERS
卷 39, 期 13, 页码 3849-3852出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.39.003849
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资金
- European Research Council Advanced Grant STRATUS (ERC-AdG) [291198]
- MIUR FIRB Grant [RBFR12SW0J]
- European Commission
We introduce a scheme for the generation of tunable few-optical-cycle UV pulses based on sum-frequency generation between a broadband visible pulse and a narrowband pulse ranging from the visible to the near-IR. This configuration generates broadband UV pulses tunable from 0.3 to 0.4 mu m, with energy up to 1.5 mu J. By exploiting nonlinear phase transfer, transform-limited pulse durations are achieved. Full characterization of the UV pulse spectral phase is obtained by two-dimensional spectral shearing interferometry, which is here extended to the UV spectral range. We demonstrate clean 8.4 fs UV pulses. (C) 2014 Optical Society of America
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