Tag Archives: n-l optics

Context for Parametric conversion in semi-classical optics

Expansion and references to the 2009 ABB conference abstract While quantum theory is an incomplete description of reality (Einstein), its validity as a description of light/photons in non-linear crystals is questionable.  In the parametric down-conversion (PDC) phenomenon, a single-frequency laser beam … Continue reading

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Parametric conversion in semi-classical optics

Poster-paper at the Aharonov Bohm and Berry Phase Anniversary (ABB 50/25) Conference at Bristol, 14-15 December 2009: Trevor W Marshall & Max K Wallis (Cardiff University) The rainbow of down-converted radiation emerging from a laser-pumped nonlinear crystal has a natural … Continue reading

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Can we celebrate Defeat for the Photon by Maxwell-Planck theory?

Success for SPUC and Maxwell-Planck theory is reported in Wikipedia as “experimental prediction of SED dubbed ‘spontaneous parametric up-conversion’ (SPUC) was tested in 2009 and 2010 with positive results.”   [consulted 1 Aug.2011] The formulations of both the Chinese (2009) and Indian (2010) … Continue reading

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Counter-examples to the photon model – striking at fundamentals of the beleaguered string theory

Scientists interested in micromanipulation predict that certain micron-sized particles experience a backward force from a forward propagating light beam.  Such a prediction is inexplicable on the photon model of light.  The Chinese group’s paper uses the Lorentz-Mie expansion of the electromagnetic … Continue reading

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Light as Waves versus Quantum Mechanics of Photons

Three challenges to fans of QM ‘photons’ ** Afshar’s 2-slit experiment: shows light ‘photons’ propagate as waves – discrete signals are created by the detection process (photo-electric effect) ** Down-conversion in crystals: the rainbow from a laser beam passing through … Continue reading

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NS mission to rescue ‘spooky action at a distance’

New Scientist on a mission to rescue Quantum Theory from ‘spooky action at a distance’ The Editorial eulogy to quantum theory (22 January 2011) appeared to mark a reversal of previous sceptical and critical approaches, as eg. in reporting Afshar’s version … Continue reading

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Quantum Theory as Physics’ “most successful”

Letter for publication in New Scientist – re. Editorial                                       – ‘don’t fear the f-word’,   Max Wallis, 22 January challenging a myth that Quantum Theory is “most successful” To call quantum theory our “most successful model of the … Continue reading

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