Near‐field second‐harmonic generation from gold nanoellipsoids

Celebrano, Michele; Biagioni, Paolo; Finazzi, Marco; Duó, Lamberto; Zavelani‐Rossi, M.; Polli, Dario; Labardi, M.; Allegrini, M.; Grand, Johan; Adam, Pierre‐Michel; Royer, Pascal; Cerullo, Giulio

doi:10.1002/pssc.200779121

Cited by 7 publications

(5 citation statements)

References 25 publications

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“…Near-field microscopes employing hollow-pyramid probes are nowadays commercially available 30 and many SNOM investigations making use of such setups have been described in the literature. 29,[31][32][33][34][35] In previous works we demonstrated that hollow-pyramid probes coupled to femtosecond pulses allow one to efficiently perform nonlinear optical experiments in the near field, demonstrating SHG from resonant gold nanostructures [36][37][38] and TPPL from polymer blends. 35 In this paper we provide a detailed description of the home-made SNOM setup based on hollow-pyramid probes coupled to femtosecond pulses, optimized for the near-field excitation or detection of the nonlinear response of nanostructured surfaces.…”

Section: Introductionmentioning

confidence: 98%

Hollow-pyramid based scanning near-field optical microscope coupled to femtosecond pulses: A tool for nonlinear optics at the nanoscale

Celebrano

Biagioni

Zavelani‐Rossi

et al. 2009

Review of Scientific Instruments

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We describe an aperture scanning near-field optical microscope (SNOM) using cantilevered hollow pyramid probes coupled to femtosecond laser pulses. Such probes, with respect to tapered optical fibers, present higher throughput and laser power damage threshold, as well as greater mechanical robustness. In addition, they preserve pulse duration and polarization in the near field. The instrument can operate in two configurations: illumination mode, in which the SNOM probe is used to excite the nonlinear response in the near field, and collection mode, where it collects the nonlinear emission following far-field excitation. We present application examples highlighting the capability of the system to observe the nonlinear optical response of nanostructured metal surfaces (gold projection patterns and gold nanorods) with sub-100-nm spatial resolution.

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Section: Introductionmentioning

confidence: 98%

Hollow-pyramid based scanning near-field optical microscope coupled to femtosecond pulses: A tool for nonlinear optics at the nanoscale

Celebrano

Biagioni

Zavelani‐Rossi

et al. 2009

Review of Scientific Instruments

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show abstract

“…A combination of the presence of the tip, which locally breaks the symmetry, and the excitation with a broad range of k-vectors emanating from the tip, allows for the collinear excitation and detection of SH emission. This idea was exploited by several groups [228,[256][257][258][259] to investigate the SH emission from individual spherical and non-spherical metal nanoparticles. By employing a silicon AFM tip, it is possible to simultaneously obtain topography, fundamental transmission and SH emission maps of the sample surface [228,[256][257][258][259].…”

Section: Second Harmonic Generationmentioning

confidence: 99%

“…This idea was exploited by several groups [228,[256][257][258][259] to investigate the SH emission from individual spherical and non-spherical metal nanoparticles. By employing a silicon AFM tip, it is possible to simultaneously obtain topography, fundamental transmission and SH emission maps of the sample surface [228,[256][257][258][259].…”

Section: Second Harmonic Generationmentioning

confidence: 99%

Single metal nanoparticles: optical detection, spectroscopy and applications

2011

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Since the first report on the far-field optical detection of single metal nanoparticles in the late 1990s, the field has rapidly developed and new methods and concepts have been introduced. Eliminating averaging over the broad size, shape and crystallinity distributions produced by even the best of current synthesis methods, these techniques have proven extremely useful for gaining a deeper insight into many of the properties of metal nanoparticles. These techniques have already led to the first applications specifically directed at using single particles. In this review we describe far-field optical techniques (both linear and nonlinear) that have sufficient sensitivity to detect single metal particles. We further discuss emerging applications, and emphasize the importance of single-particle detection techniques in their development.

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“…Combining near‐field microscopy with nonlinear methods can enhance the spatial resolution of these nonlinear field maps . Nonlinear optical generation can also be used as a localized near‐field light source for imaging applications .…”

Section: Characterization Of Nanoplasmonic Tipsmentioning

confidence: 99%

Tip-based plasmonics: squeezing light with metallic nanoprobes

Lindquist

Jose

Cherukulappurath

et al. 2013

Laser & Photonics Reviews

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Nanofabricated metallic tips are at the core of important research in single‐molecule imaging, near‐field scanning optical microscopy, tip‐enhanced Raman spectroscopy, as well as potential commercial applications such as heat‐assisted magnetic recording. While challenging to fabricate, much progress has been made towards the reliable production of extremely sharp (10 nm) metallic probes. In this review, the various factors that go into the design of metallic tips, their fabrication, packaging and system integration, characterization, passivation, and eventual use are discussed. Fabrication challenges, implementation issues, optical excitation schemes, and various current and emerging applications are also discussed. For the rapidly emerging fields of plasmonics and nanophotonics, the use of sharp metallic tips has generated significant scientific progress and will play an integral role well into the future.

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Near‐field second‐harmonic generation from gold nanoellipsoids

Cited by 7 publications

References 25 publications

Hollow-pyramid based scanning near-field optical microscope coupled to femtosecond pulses: A tool for nonlinear optics at the nanoscale

Hollow-pyramid based scanning near-field optical microscope coupled to femtosecond pulses: A tool for nonlinear optics at the nanoscale

Single metal nanoparticles: optical detection, spectroscopy and applications

Tip-based plasmonics: squeezing light with metallic nanoprobes

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