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Recorded Interviews & Discussions

Essays and other writings

Talks, Workshops, Lectures and Poster presentations

List of (some) Papers

Authors Title Journal Ref
2022.2 C. Roychoudhuri; G. Fernando; N. Prasad Understanding the physical processes behind the photoelectric current pulse (PCP) statistics and designing better sources SPIE Conference: Photonics for Quantum, 2022 - Paper # SPIE 12243-3 Download this paper or
2021.3 C. Roychoudhuri Optics professionals, get involved in fundamental physics, both in teaching and in research ETOP Conf. Managed by OSA: Th3A.5. September 9, 2021 Download this paper or
2021.2 C. Roychoudhuri Cosmic Ether, Possessing Electric-Tension and Magnetic-Resistance, Is the Unified Field for Physics Journal of Modern Physics, 2021, 12, 671-699 Download this paper or
2021.1 C. Roychoudhuri Do We Maniupolate Photons or Diffractive EM Waves to Generate Structured Light? "Chapter in Single Photon Manipulation" Download this paper or
2020.2 C. Roychoudhuri Complete Information Retrieval: A Fundamental Challenge "FQXi Essay Contest Entry" Download this paper or
2020.1 Roychoudhuri, C.; Fernando, G.; Tirfessa, N.; Prasad, N. Contrasting quantum sensing light source properties, which generate different photocurrent pulse-statistics Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 112880F (31 January 2020); doi: 10.1117/12.2551090 Download this paper or
2019.6 C. Roychoudhuri Differentiating the Superposition Principle from the Measurable Superposition Effects in Interferometry "Chapter in Interferometry" Download this paper or
2019.4 C. Roychoudhuri Developing causal interpretations for high and low level light used in quantum remote sensing Proc. SPIE 11128, Infrared Remote Sensing and Instrumentation XXVII, 111280M (9 September 2019); doi:10.1117/12.2533994 Download this paper or
2019.3 C. Roychoudhuri; N. Tirfessa Bringing reality in physics: System engineering approach to optical phenomena following Huygens' Principle Proc. SPIE 11143, Fifteenth Conference on Education and Training in Optics and Photonics: ETOP 2019, 111433A (2 July 2019); doi:10.1117/12.2523602 Download this paper or
2019.2 N. Tirfessa;C. Roychoudhuri Similarities and differences in microwave and optical radiation detection Proc. SPIE 11143, Fifteenth Conference on Education and Training in Optics and Photonics: ETOP 2019, 111433W (2 July 2019); doi: 10.1117/12.2525442 Download this paper or
2019.1 C. Roychoudhuri; N. Prasad Complex interaction processes we need to visualize that successfully fill the quantum cup of a detector Proc. SPIE 10926, Quantum Sensing and Nano Electronics and Photonics XVI (22 March 2019); doi:10.1117/12.2514835 Download this paper or
2018.1 C. Roychoudhuri "The concept of ""fundamental"" must keep evolving" "FQXi Essay Contest Entry" Download this paper or
2018.2 C. Roychoudhuri; N. Prasad Short pulse characterization requires recognizing inseparability of auto- correlation and spectral measurements Proc. SPIE 10522, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVIII, 105221N (19 February 2018); doi: 10.1117/12.2295832 Download this paper or
2018.3 C. Roychoudhuri What are the physical processes behind the evolution of spatial coherence out of incoherent light and particle beams? Laser Science 2018 - Washington, DC United States - 16-20 September 2018 Download this paper or
2017.4 C. Roychoudhuri Re-energizing Enquiry among our young professionals 2017 ETOP Conference; Paper # ETP 100-43 Download this paper or
2017.3 C. Roychoudhuri Consequences of repeated discovery and benign neglect of Non-Interaction of Waves (NIW) 2017 ETOP Conference; Paper # ETP 100-36 Download this paper or
2017.2 C. Roychoudhuri Demonstration & implications when 50% beam combiners can behave as 0% or 100% reflector/transmitter inside some interferometers 2017 ETOP Conference; Paper # ETP 100-83 Download this paper or
2017.1 C. Roychoudhuri Empower Mathematical Equations Using Evolution Process Congruent Thinking "2017 FQXi Essay Contest Entry" Download this paper or
2016.x C. Roychoudhuri Aquaponics as a small eco system: A potential tool in every family to educate the children to become eco-savvy "IIT Bombay Heritage Foundation & IIT Bombay Alumni Association Kolkata Chapter" Download this paper or
2015.6 C. Roychoudhuri Urgency of evolution process congruent thinking in physics Proc. SPIE Vol. 9570-7(2015) Download this paper or
2015.5 C. Roychoudhuri; M. Ambroselli Could space be considered as the inertial rest frame? Proc. SPIE Vol. 9570-30(2015) Download this paper or
2015.4 M. Ambroselli;C. Roychoudhuri Did Planck, Einstein, Bose count indivisible photons, or discrete emission / absorption processes in a black-body cavity? Proc. SPIE Vol. 9570-9(2015) Download this paper or
2015.3 C. Roychoudhuri; M. Ambroselli Modelling superposition of 3- & N-polarized beams on an isotropic photo detector Proc. SPIE Vol. 9570-46(2015) Download this paper or
2015.2 N. Prasad;C. Roychoudhuri Tabletop demonstration of Non-Interaction of Photons and Non-Interaction of Waves Proc. SPIE Vol. 9570-47(2015) Download this paper or
2015.1 C. Roychoudhuri "Review of: ""Light: The Physics of Photons"" by Ole Keller, CRC Press, Boca Raton, Fl. 2014" Am. J. Phys. 83 (3), pp.286-7, March 2015 Download this paper or
2014.3 C. Roychoudhuri "Superposition Effect is a ""local"" phenomenon when we investigate the process behind release of photo electrons" Latin America Optics and Photonics Conference, 2014 Download this paper or
2014.2 C. Roychoudhuri Causal Physics - Photon Model by Non-Interaction of Waves - Ch. 12: Evolving Scientific Inquiry CRC/Taylor and Francis, 2014 Download this paper or
2013.1 N. Prasad;C. Roychoudhuri Does the Coherent Lidar System Corroborate Non-Interaction of Waves (NIW)? Proc. SPIE Vol. 8832-8(2013) Download this paper or
2013.2 N. Prasad;C. Roychoudhuri Understanding beam alignment in a coherent lidar system Proc. SPIE Vol. 8832-9(2013) Download this paper or
2013.3 C. Roychoudhuri How would photons describe natural phenomena based upon their physical experiences? Proc. SPIE Vol. 8832-34(2013) Download this paper or
2013.4 C. Roychoudhuri;M. Ambroselli Can one distinguish between Doppler shifts due to source-only and detector-only velocities? Proc. SPIE Vol. 8832-2(2013) Download this paper or
2013.5 C. Roychoudhuri "Tribute to H. John Caulfield - Hijacking the ""Holographic Principle"" by cosmologists" Proc. SPIE Vol. 8833-15(2013) Download this paper or
2012.1 C. Roychoudhuri;N. Prasad Discerning comb and Fourier mean frequency from a fs laser, based on the principle of non-interaction of waves Proc. SPIE Vol. 8236, paper #16 (2012). Download this paper or
2012.2 C. Roychoudhuri Next Frontier in Physics - Space as a Complex Tension Field Journal of Modern Physics, 2012, 3, 1357-1368 Download this paper or
2011.1 C. Roychoudhuri;M. Barootkoob;M. Ambroselli The constancy of c everywhere requires the cosmic space to be a stationary and complex tension field SPIE Conf. Proc. Vol.8121-23 (2011). Download this paper or
2011.2 C. Roychoudhuri Appreciation of the nature of light demands enhancement over the prevailing scientific epistemology in this volume; Proc. SPIE Vol.8121- 58 (2011). Download this paper or
2011.3 N. Tirfessa;C. Roychoudhuri Analysis of spectrometric data and detection processes corroborate photons as diffractively evolving wave packets Proc. SPIE Vol.8121-33 (2011). Download this paper or
2011.4 C. Roychoudhuri Re-interpreting coherence in light of Non-Interaction of Waves, or the NIW-Principle SPIE Conf. Proc. Vol.8121-44 (2011). Download this paper or
2011.5 M. Ambroselli;C. Roychoudhuri Visualizing superposition process and appreciating the principle of Non-Interaction of Waves Proc. SPIE Vol. 8121-49 (2011). Download this paper or
2011.6 M. Ambroselli;P. Poulos;C. Roychoudhuri Nature of EM waves as observed & reported by detectors for radio, visible and gamma frequencies Proc. SPIE Vol.8121-41 (2011). Download this paper or
2011.8 C. Roychoudhuri Exploring light-matter interaction processes to appreciate various successes behind the Fourier theorem! A tribute conf. to Joseph Goodman. SPIE Proc. Vol.8122-15 (2011). Download this paper or
2010.1 C. Roychoudhuri Principle of non-interaction of waves J. Nanophotonics., Vol. 4, 043512 (2010); doi:10.1117/1.3467504. Download this paper or
2010.3 C. Roychoudhuri Various Ambiguities in Generating and Reconstructing Laser Pulse Parameters Ch.7 in Laser Pulse Phenomena and Applications; Ed. F. J. Duarte; InTech (2010). Download this paper or
2009.1 C. Roychoudhuri The consilient epistemology: structuring evolution of logical thinking Chap. 16 in Proc. 1st Interdisciplinary CHESS Interactions Conf., Eds. C. Rangacharyulu and E. Haven; Imperial College Press, London (2009). Download this paper or
2009.3 C. Roychoudhuri Why we need to continue the 'What is a Photon?' conference: to re-vitalize classical and quantum optics keynote presentation; SPIE Conf. Proc. Vol. 7421-28 (2009). Download this paper or
2009.4 C. Roychoudhuri Comments on the panel discussions: Is indivisible single photon really essential for quantum communications, computing and encryption? SPIE Conf. Proc. Vol. 7421(2009). Download this paper or
2009.5 A. Muthukrishnan;C. Roychoudhuri Indivisibility of the Photon. SPIE Proc. Vol. 7421-4 (2009). Download this paper or
2009.7 Q. Peng;M. Barootkoob;C. Roychoudhuri What can we learn by differentiating between the physical processes behind interference and diffraction phenomena? SPIE Proc. Vol. 7421-9 (2009). Download this paper or
2008.2 C. Roychoudhuri Inevitable incompleteness of all theories: an epistemology to continuously refine human logics towards cosmic logics Ch.6 in The Nature of Light: What is a Photon? by C. Roychoudhuri, A. F. Kracklauer & Kathy Creath; CRC/Taylor & Francis (2008). Download this paper or
2008.3 C. Roychoudhuri Can photo sensors help us understand the intrinsic difference between quantum and classical statistical behavior? AIP Conf. Proc. Vol.1101, pp. 167-177 (2009); Fifth Conf. on Foundations of Probability & Physics; Sweden, Aug.24-27, 2008. Download this paper or
2008.4 C. Roychoudhuri What is Coherence Proceedings of International Photonics Conference, New Delhi, India, December, 2008; Invited Talk. Download this paper or
2008.5 C. Roychoudhuri;M. Barootkoob Generalized quantitative approach to two-beam fringe visibility (coherence) with different polarizations and frequencies SPIE Conf. Proc. Vol. 7063, paper #4 (2008). Download this paper or
2007.4 C. Roychoudhuri Shall we climb on the shoulders of the giants to extend the reality horizon of physics? Conf. on Quantum Theory: Reconstruction of Foundations - 4; Invited paper; AIP Conf. Proc. Vol.962 (2007). Download this paper or
2007.5 C. Roychoudhuri Bi-centenary of successes of Fourier theorem! Its power and limitations in optical system designs Invited paper; SPIE Conf. Proc. Vol. 6667-18 (2007). Download this paper or
2007.6 C. Roychoudhuri Can the hypothesis 'photon interferes only with itself' be reconciled with superposition of light from multiple beams or sources? doi: 10.1117/12.734363; SPIE. Proc. Vol.6664 (2007). Download this paper or
2007.7 C. Roychoudhuri Can a deeper understanding of the measured behavior of light remove wave-particle duality? doi: 10.1117/12.740189; SPIE. Proc. Vol.6664 (2007). Download this paper or
2007.8 C. Roychoudhuri;P. Poulos Can we get any better information about the nature of light by comparing radio and light wave detection processes? doi: 10.1117/12.740177; SPIE. Proc. Vol.6664 (2007). Download this paper or
2007.9 C. Roychoudhuri;N. Tirfessa;C. Kelley;R. Crudo If EM fields do not operate on each other, why do we need many modes and large gain bandwidth to generate short pulses? SPIE Proc. Vol.6468-53 (2007). Download this paper or
2007.1 C. Roychoudhuri The nature of light: what are photons? "SPIE News on Web, January 4 (2007)." Download this paper or
2007.11 C. Roychoudhuri A deeper look at the fundamentals of heterodyne detection requirements 14th Coherent Laser Radar Conference Download this paper or
2006.1 C. Roychoudhuri Locality of superposition principle is dictated by detection processes Phys. Essays 19 (3), September (2006). Download this paper or
2006.2 C. Roychoudhuri;M. Tayahi Spectral Super-Resolution by Understanding Superposition Principle & Detection Processes "Intern. J. of Microwave and Optics Tech., July (2006)." Download this paper or
2006.3 C. Roychoudhuri;N. Prasad proceedings of the October, 2006 IEEE-LEOS Annual Conference, Montreal, Canada; Invited Talk. Download this paper or
2006.4 C. Roychoudhuri;N. Tirfessa Various ambiguities in re-constructing laser pulse parameters Proc. SPIE Vol.6372-29 (2006), Do we count indivisible photons or discrete quantum events experienced by detectors? Download this paper or
2006.5 C. Roychoudhuri;D. Lee;P. Poulos If EM fields do not operate on each other, how do we generate and manipulate laser pulses? Proc. SPIE Vol.6290-02 (2006); Download this paper or
2006.6 C. Roychoudhuri;C. V. Seaver Proc. SPIE Vol. 6285-01, Invited, (2006) in The nature of light: Light in nature; Download this paper or
2006.7 C. Roychoudhuri;N. Tirfessa Are dark fringe locations devoid of energy of superposed fields? Proc. SPIE Vol.6292-01, Invited (2006); A critical look at the source characteristics used for time varying fringe interferometry. Download this paper or
2006.8 C.Roychoudhuri;V. Lakshminarayanan Role of the retinal detector array in perceiving the superposition effects of light Proc. SPIE Vol.6285-08 (2006) in The nature of light: Light in nature; Download this paper or
2006.9 C. Roychoudhuri Reality of superposition principle and autocorrelation function for short pulses Proc. SPIE Vol. 6108-50(2006). Download this paper or
2005.2 C. Roychoudhuri If superposed light beams do not re-distribute each other's energy in the absence of detectors (material dipoles), can an indivisible single photon interfere by/with itself? Proc. SPIE Vol.5866-05, pp.26-35 (2005). Download this paper or
2005.3 C. Roychoudhuri What are the processes behind energy re-direction and re-distribution in interference and diffraction? Proc. SPIE Vol.5866-16, pp.135-146(2005); Download this paper or
2004.1 C. Roychoudhuri Propagating Fourier frequencies vs. carrier frequency of a pulse through spectrometers and other media in Interferometry-XII: Techniques and Analysis; Proc. SPIE Vol.5531, 450-461(2004). Download this paper or
2003.1 D. Lee;C. Roychoudhuri Measuring properties of superposed light beams carrying different frequencies "Optics Express 11(8), 944-51, (2003)." Download this paper or
2003.2 D. Young;C. Roychoudhuri Results and comparison of a cladding pumped fiber simulation using a decagon-shaped fiber "Optics Express, 11 (7), 830-837 (2003)" Download this paper or
2003.3 C. Roychoudhuri;R. Roy The Nature of Light: What is a Photon? "Optics & Photonics News Trends, Special issue of OPN, October (2003)." Download this paper or
2003.4 C. Roychoudhuri;D. Lee;Y. Jiang;S. Kittaka;M. Nara;V. Serikov;M. Oikawa Limits of DWDM with gratings and Fabry-Perot's and alternate solutions Invited talk; Proc. SPIE Vol.5246, 333-344, (2003). Download this paper or
2003.5 C. Roychoudhuri;M. Nantel The Global Photonics Education Network: Another Way to Think Globally and Act Locally SPIE Conf.Proc. ETOP-2003, paper # EME 6 (2003). Download this paper or
2002.1 O. V. Smolski;J. Jiang;C. Roychoudhuri;E. L. Portnoi;J. Bullington Tunable pico second pulses from gain-switched grating coupled surface emitting lasers Proc. SPIE Vol.4651, paper # 09, (2002). Download this paper or
1998.1 J. Anderson and C. Roychoudhuri, Diffraction of an Extremely Short Optical Pulse , J. Opt. Soc. Am., 15 (2), 456-463(1998). Download this paper or
1989.1 F. X. D'Amato, E. T. Siebart & C. Roychoudhuri; Coherent Operation of an Array of Diode Lasers Using a Spatial Filter in a Talbot Cavity ; Appl. Phys. Lets. 55 (9), 816-818 (1989). Download this paper or
1979.2 G. L. Clark & C. Roychoudhuri; Interferometry through single mode optical fiber ; Proc. SPIE Vol.192, 196 (1979). Download this paper or
1977.1 C. Roychoudhuri & S. Calixto; Spectroscopy of Short Pulses ; Boletin. Inst. Tonantzintla, 2(3), 187 (1977). Download this paper or
1977.2 C. Roychoudhuri, Causality and Classical Interference and Diffraction Phenomena ; Boletin. Inst. Tonantzintla, 2(3), 165 (1977). Download this paper or
1976.3 C. Roychoudhuri; Is Fourier Decomposition Interpretation Applicable to Interference Spectroscopy? Bol. Inst. Tonantzintla 2(2), 101 (1976). Download this paper or
1976.4 C. Roychoudhuri, R. Machorro & M. Cervantes; Some Interference Experiments and Quantum Concepts, II ; Bol. Inst. Tonantzintla 2(1), 55 (1976). Download this paper or
1975.1 C. Roychoudhuri; Response of Fabry-Perot Interferometers to Light Pulses of Very Short Duration . (The analysis of this paper is followed and cited in two books: (i) Fabry-Perot Interferometers by G. Hernandez, Cambridge U., 1986 and (ii) The Fabry-Perot Interferometer by J. M. Vaughan; Adam Hilger, 1989.); J. Opt. Soc. Am.; 65(12), 1418 (1975). Download this paper or
1975.4 C. Roychoudhuri; Demonstration Using a Fabry-Perot. I. Multiple-Slit Interference ; Am. J. Phys. 43(12), 1054 (1975). Download this paper or
1975-7 C. Roychoudhuri Two Beam Interference Experiments and some Quantum Concepts Boletin Del Instituto De Tanantzintla, Vol. 1, No. 5, 1975 Download this paper or