Prof. Chandrasekhar Roychoudhuri
Research Professor at Univ of Connecticut
SPIE Involvement:
Board of Directors | Education Committee | Engineering, Science, and Technology Policy Committee | Nominating Committee | Fellow status | Conference Chair | Conference Co-Chair | Symposium Chair | Conference Program Committee | Author | Editor
Area of Expertise:
Nature of light , Superpopsition Phenomena , What are photons? , Coherence as detector time constant , Non-Interaction of Waves , Mode-locking vs. time-gating
Websites:
Profile Summary

I have worked both in academia (USA, India, Mexico) and in industry (TRW, Perkin Elmer and United technologies). I have recently published a book, "Causal Physics: Photon Model by Non-Interaction of Waves", CRC/ Taylor & Francis, 2014. The book revisits all the basic optical phenomena by incorporating the universal property that waves by themselves do not interact (interfere) with each other in the absence of interacting material medium. The Superposition Effects (fringes) due to multiple beams of waves or particles, become manifest only as physical transformations in detector arrays; when when simultaneously stimulated by all the beams. Thus, measurable Superposition Effects are Causal & Local. This Non-Interaction of Waves, or NIW-property was underscored by the father of wave propagation, Christian Huygens; which is the basis of Huygens' Principle; which we have been neglecting for over three centuries. This principle eventually evolved into Huygens-Fresnel Diffraction Integral; which is at the core of analyzing almost all optical phenomena. An explicit recognition of the NIW-property removes a large number of prevalent contradictory hypotheses, both in classical and in quantum optics, including wave-particle duality.
at SPIE Annual meetings.
Engineering innovations in optics can be further accelerated once we start visualizing the processes behind the superposition effects while applying the thus far neglected NIW-property.
I have initiated a continuing biennial conference series since 2005 on the "Nature of light" at the SPIE annual meetings; besides giving a 2-hour workshop every year at the Phonics West. I have also been giving 1 to 3-day workshops on the causal nature of light to student chapters all over the world for over five years.
I have BS and MS in Physics from the Jadavpur University, Kolkata, INDIA; and PhD in Optics from the Institute of Optics, University of Rochester, USA.
Publications (84)

PROCEEDINGS ARTICLE | August 16, 2017
Proc. SPIE. 10452, 14th Conference on Education and Training in Optics and Photonics: ETOP 2017
KEYWORDS: Lead

PROCEEDINGS ARTICLE | August 16, 2017
Proc. SPIE. 10452, 14th Conference on Education and Training in Optics and Photonics: ETOP 2017
KEYWORDS: Video, Water, Mach-Zehnder interferometers

PROCEEDINGS ARTICLE | August 16, 2017
Proc. SPIE. 10452, 14th Conference on Education and Training in Optics and Photonics: ETOP 2017
KEYWORDS: Surface plasmons

SPIE Conference Volume | September 28, 2015

PROCEEDINGS ARTICLE | September 25, 2015
Proc. SPIE. 9570, The Nature of Light: What are Photons? VI
KEYWORDS: Glasses, Photons, Scattering, Superposition, Laser scattering, Chromium, Silica, Physics, Sensors, Surface finishing

PROCEEDINGS ARTICLE | September 10, 2015
Proc. SPIE. 9570, The Nature of Light: What are Photons? VI
KEYWORDS: Photons, Electrons, Particles, Contrast transfer function, Physics, Electromagnetism, Gamma radiation, Quantum mechanics, Magnetism, Mathematics

Showing 5 of 84 publications
Conference Committee Involvement (15)
The Nature of Light: What are Photons? VI
10 August 2015 | San Diego, California, United States
The Nature of Light: What are Photons? V
26 August 2013 | San Diego, California, United States
The Nature of Light: What are Photons? IV
22 August 2011 | San Diego, California, United States
The Nature of Light: What are Photons? III
3 August 2009 | San Diego, California, United States
The Nature of Light: What are photons?
26 August 2007 | San Diego, California, United States
Showing 5 of 15 published special sections
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