Nonlinear reflection of picosecond pulses from a galss-liquid interface

Altshuller, G. B.; Ermolaev, V. S.; Krylov, K. I.; Макаров, М. А.; Pavlov, L. I.

doi:10.1016/0030-4018(85)90216-0

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…Such nonlinearities have been reported in crystalline semiconductors, 19,20,34 on metal surfaces, 35 and on glass and liquid surfaces. 36 While the mechanism for nonlinearity varies, we postulate that many additional material systems possess the required nonlinearity in their reflection.…”

Section: Nano Lettersmentioning

confidence: 96%

Super-Resolution in Label-Free Photomodulated Reflectivity

Tzang¹,

Pevzner²,

Marvel

et al. 2015

Nano Lett.

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We demonstrate a new, label-free, far-field super-resolution method based on an ultrafast pump-probe scheme oriented toward nanomaterial imaging. A focused pump laser excites a diffraction-limited spatial temperature profile, and the nonlinear changes in reflectance are probed. Enhanced spatial resolution is demonstrated with nanofabricated silicon and vanadium dioxide nanostructures. Using an air objective, resolution of 105 nm was achieved, well beyond the diffraction limit for the pump and probe beams and offering a novel kind of dedicated nanoscopy for materials.

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Section: Nano Lettersmentioning

confidence: 96%

Super-Resolution in Label-Free Photomodulated Reflectivity

Tzang¹,

Pevzner²,

Marvel

et al. 2015

Nano Lett.

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“…Vanadium oxide films have also been studied for OL due to the occurrence of thermal-optical nonlinearity that causes abrupt changes of absorption and refraction. At the basis of such a NLO effect, there is a semiconductor-to-metal phase transition at T = ∼67 °C. − VO 2 composites and films were found to possess ultrafast nonlinearities and enhanced absorption, , with capability to be used as optical power attenuators in the NIR range. − …”

Section: Inorganic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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“…SR imaging of 70nm using the 1 on is enhanced w in Figure 1, s and measure of the two me ns for optimal S r-resolution in monitors nonli der ,n, is redu e pump beam … in a lo to obtain clean now under wo odulated reflect urfaces 20 …”

Section: Introductionmentioning

confidence: 99%

Far-field super-resolution microscopy based on the nonlinear response of photothermal excitation

Tzang

Cheshnovsky

2015

SPIE Proceedings

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Far field Super resolution (SR) microscopy, based on the emission of label fluorescent molecules, has become an important tool in life sciences. We present a new, label free, far field SR scheme, aimed towards material science, which is based on ultrafast, nonlinear excitation of materials to non-equilibrium state. In a pump-probe scheme, we optically excite a spatial temperature profile throughout the diffraction limited spot, and probe the material with an overlapping beam. Due to nonlinearities in thermal properties, we demonstrate enhancement of at least x2 better than the diffraction limit. Our approach can be extended to include other temperature dependent physical properties such as Raman scattering, reflection/absorption edge or luminescence. The method is suitable to characterize semiconductor and optoelectronic systems in vacuum, ambient, and liquid, semi-transparent and opaque systems, ultrathin and thick samples alike. In this communication we present the method and discuss some major physical consideration and experimental aspects of its application. We focus the discussion on ultrafast dynamic and thermal properties. We also discuss the applicability of the method in the unique case of VO 2 where photo-induced phase transition provides the contrast and present a highly accurate optical edge detection method based on the modulation phase.

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Nonlinear reflection of picosecond pulses from a galss-liquid interface

Cited by 7 publications

References 6 publications

Super-Resolution in Label-Free Photomodulated Reflectivity

Super-Resolution in Label-Free Photomodulated Reflectivity

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Far-field super-resolution microscopy based on the nonlinear response of photothermal excitation

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