Journal
OPTICA
Volume 3, Issue 7, Pages 707-710Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.3.000707
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Funding
- Army Research Office (ARO) [W911NF-14-1-0383]
- National Science Foundation (NSF) [CHE-1361226]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1361226] Funding Source: National Science Foundation
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Attosecond spectroscopy is a powerful technique for probing electron dynamics in fundamental systems. However, extending this method to cover a wide range of element-specific, core-hole transitions requires the availability of broadly tunable attosecond pulses. In this Letter, we present a new method for generating high-flux, high-contrast single attosecond pulses tunable across the range of 50-120 eV. The method is referred to as a Polarization ASSisted Amplitude GatE (PASSAGE) and uses a few-cycle driving pulse along with a partial polarization gate to extend the bandwidth of high harmonic emission in the temporally isolated, cut-off portion of the spectrum. The simplicity of this technique will help pave the way for implementing attosecond core-hole spectroscopy to probe more complex reactions and bring attosecond science into a multidisciplinary setting. (C) 2016 Optical Society of America
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