Theory of optical second-harmonic and sum-frequency scattering from arbitrarily shaped particles

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Polarimetric angle-resolved second-harmonic scattering (AR-SHS) is an all-optical tool enabling the study of unlabeled interfaces of nano-sized particles in an aqueous solution. As the second harmonic signal is modulated by interference between nonlinear c ...

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Nonlinear frequency conversion processes, such as second-harmonic generation (SHG) and spontaneous parametric down-conversion (SPDC), are essential in many applications, including the generation of entangled photons. It's desirable to enhance these process ...

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In this thesis we study how physical principles imposed on the S-matrix, such as Lorentz invariance, unitarity, crossing symmetry and analyticity constrain quantum field theories at the nonperturbative level. We start with a pedagogical introduction to the ...

Theory of optical second-harmonic and sum-frequency scattering from arbitrarily shaped particles

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Humidity-insensitive optical fibers for distributed sensing applications

Spin wave dispersion of ultra-low damping hematite (α-Fe2O3) at GHz frequencies

Nonperturbative aspects of scattering amplitudes