High Harmonic Generation by Plasmonic Enhancement of Femtosecond Pulse Laser

Kim, Seungchul; Park, In-Yong; Choi, Joonhee

doi:10.1007/978-3-642-15054-8_7

Cited by 8 publications

(12 citation statements)

References 23 publications

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“…"Sivis et al showed [28] spectral data of extreme ultraviolet (EUV) emission from gasexposed bow-ties, claiming high predominance of atomic line emission (ALE) of neutral and ionized gas atoms in contradiction to our data [24,58] of high harmonic generation (HHG). This is not the first time the signature of ALE has been identified in conventional HHG spectral data [78].…”

contrasting

confidence: 91%

“…Last, the linewidths we have measured are partially given by spectrometer resolution (below 2 nm) and are very similar to those in ref. [24] and in a related experiment with xenon [58]. Whereas harmonic linewidths are influenced by the spectral amplitude and temporal duration of the fundamental driving field, the linewidths of atomic and ionic fluorescence are governed by the spontaneous lifetime.…”

Section: Home-built Vacuum Setup For Euv Light Generation and Spectramentioning

confidence: 96%

“…The photon-count of our data [24,58] was estimated by measuring the output current of the photomultiplier tube (PMT) used to scan the raw spectral data, and at the same time taking into account all the individual functional efficiencies of the hardware components involved in our experiment. This projected estimation of photon-count led to a noise floor of~10 6 photons s −1 , which appeared rather high due to electrical noise in the PMT current measurement.…”

Section: Appendix a Kim Et Al Replymentioning

confidence: 99%

“…However, no experimental demonstration has yet been reported except for our HHG data [24,58] from bow-ties. The main reason may be inferred from the durability problem we encountered with bow-ties patterned with Au on a sapphire substrate.…”

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confidence: 90%

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Extreme-ultraviolet light generation in plasmonic nanostructures

et al. 2013

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The present (cumulative) thesis examines fundamentals of nanostructure-enhanced extreme-ultraviolet light generation in noble gases using two different nanostructure geometries for local field-enhancement. Specifically, resonant antennas and tapered hollow waveguide nanostructures are utilized to enhance low-energy femtosecond laser pulses, which in turn induce light emission from excited xenon, argon and neon atoms and ions. Spectral analysis of this radiation reveals that coherent high-order harmonic generation is not feasible under the examined conditions, contrary to former expectations and reports. Instead, the spectral characteristics unequivocally identify that incoherent fluorescence from multiphoton excited and strong-field ionized gas atoms is the predominant process in such schemes. Furthermore, novel nanostructure-enhanced effects are reported such as surface-enhanced fifth-order harmonic generation (from bow-tie nanoantennas) and the formation of a bistable nanoplasma (in a hollow waveguide). These effects offer intriguing links between nonlinear nano-optics, plasma dynamics and extreme-ultraviolet radiation.v vi

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confidence: 91%

Section: Home-built Vacuum Setup For Euv Light Generation and Spectramentioning

confidence: 96%

Section: Appendix a Kim Et Al Replymentioning

confidence: 99%

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confidence: 90%

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Extreme-ultraviolet light generation in plasmonic nanostructures

et al. 2013

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“…Plasmon-enhanced high-harmonic spectra reported for Ar [2] and Xe [3] with generated intensities of ∼ 0.1..0.2 nW and 2..3 nW for each of the main harmonics, respectively (data digitized from [2] and [3]) in comparison with the new data from [6] (x5, and offset for clarity). Dashed lines indicate the expected spectral position for the different harmonics for the 800 nm pump wavelength.…”

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confidence: 99%