All Stories

  1. Resolving wave-particle duality could accelerate the mass production of quantum computers

    Article • March 2024, SPIE

    Chandrasekhar Roychoudhuri, Dr Narasimha S Prasad

  2. Developing causal interpretations for high and low level light used in quantum remote sensing

    Article • September 2019, SPIE

    Chandrasekhar Roychoudhuri

  3. Introduction

    Article • July 2019, Springer Science + Business Media

    Chandrasekhar Roychoudhuri

  4. Bringing reality in physics: System engineering approach to optical phenomena following Huygens' Principle

    Article • July 2019, SPIE

    Chandrasekhar Roychoudhuri

  5. Developing updated physical optics curriculum: incorporating the neglected reality of non-interaction of waves (NIW)

    Article • July 2019, SPIE

    Chandrasekhar Roychoudhuri

  6. Similarities and differences in microwave and optical radiation detection

    Article • July 2019, SPIE

    Chandrasekhar Roychoudhuri

  7. Complex interaction processes we need to visualize that successfully fill the quantum cup of a detector

    Article • March 2019, SPIE

    Chandrasekhar Roychoudhuri

  8. A Causal Photon without Duality

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  9. Causal Physics

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  10. Contradictions in Optical Phenomena

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  11. Diffraction Phenomenon

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  12. Dispersion Phenomenon

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  13. Emergence of Superposition Effects

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  14. Evolving Scientific Inquiry

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  15. Mode-Lock Phenomenon

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  16. Polarization Phenomenon

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  17. Recognizing NIW Property

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  18. Spectrometry

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  19. “Coherence” Phenomenon

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  20. NIW Property Requires Complex Tension Field (CTF)

    Article • September 2018, Taylor & Francis

    Chandrasekhar Roychoudhuri

  21. Short pulse characterization requires recognizing inseparability of auto-correlation and spectral measurements

    Article • February 2018, SPIE

    Chandrasekhar Roychoudhuri

  22. What are the physical processes behind the evolution of spatial coherence out of incoherent light and particle beams?

    Article • January 2018, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  23. The Nature of Light

    Article • December 2017, Taylor & Francis

    Chandrasekhar Roychoudhuri

  24. Consequences of repeated discovery and benign neglect of non-interaction of waves (NIW)

    Article • August 2017, SPIE

    Chandrasekhar Roychoudhuri

  25. Demonstration and implications when 50% beam combiners can behave as 0% or 100% reflector/transmitter inside some interferometers

    Article • August 2017, SPIE

    Chandrasekhar Roychoudhuri

  26. Re-energizing enquiry among our young professionals

    Article • August 2017, SPIE

    Chandrasekhar Roychoudhuri

  27. Hybrid photon model bridges classical and quantum optics

    Article • January 2017, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  28. Physical Processes Behind Registering Superposition Effect Implicate Impossibility of Single Photon Interference

    Article • January 2016, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  29. Tabletop demonstration of non-Interaction of photons and non-interference of waves

    Article • September 2015, SPIE

    Chandrasekhar Roychoudhuri

  30. Front Matter: Volume 9570 (volume currently under technical review)

    Article • September 2015, SPIE

    Chandrasekhar Roychoudhuri

  31. Could space be considered as the inertial rest frame?

    Article • September 2015, SPIE

    Chandrasekhar Roychoudhuri

  32. Did Planck, Einstein, and Bose count indivisible photons or discrete emission/absorption processes in a black-body cavity?

    Article • September 2015, SPIE

    Chandrasekhar Roychoudhuri

  33. Urgency of evolution-process congruent thinking in physics

    Article • September 2015, SPIE

    Chandrasekhar Roychoudhuri

  34. Modeling superposition of 3- and N-polarized beams on an isotropic photo detector

    Article • September 2015, SPIE

    Chandrasekhar Roychoudhuri

  35. Are electrons oscillating photons, oscillating “vacuum," or something else? The 2015 panel discussion

    Article • September 2015, SPIE

    Chandrasekhar Roychoudhuri

  36. A proposal to organizei2-EPR (International Institute for Exploring Physics with Reality)

    Article • August 2015, SPIE

    Chandrasekhar Roychoudhuri

  37. Can classical optical superposition principle get us out of quantum mysticism of non-locality and bring back reality to modern physics?

    Article • August 2015, SPIE

    Chandrasekhar Roychoudhuri

  38. Evolving Scientific Inquiry

    Article • May 2014, Taylor & Francis

    Chandrasekhar Roychoudhuri

  39. Propagating the carrier frequency of a pulse seamlessly connects spectrometry & coherence

    Article • January 2014, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  40. Can one distinguish between Doppler shifts due to source-only and detector-only velocities?

    Article • October 2013, SPIE

    Chandrasekhar Roychoudhuri

  41. Resonant energy absorption and the CTF hypothesis

    Article • October 2013, SPIE

    Chandrasekhar Roychoudhuri

  42. How would photons describe natural phenomena based upon their physical experiences?

    Article • October 2013, SPIE

    Chandrasekhar Roychoudhuri

  43. Does the coherent lidar system corroborate non-interaction of waves (NIW)?

    Article • October 2013, SPIE

    Chandrasekhar Roychoudhuri

  44. Understanding beam alignment in a coherent lidar system

    Article • October 2013, SPIE

    Chandrasekhar Roychoudhuri

  45. Tribute to H. John Caulfield: hijacking of the 'holographic principle' by cosmologists

    Article • September 2013, SPIE

    Chandrasekhar Roychoudhuri

  46. Discerning comb and Fourier mean frequency from an fs laser based on the principle of non-interaction of waves

    Article • February 2012, SPIE

    Chandrasekhar Roychoudhuri

  47. Coherence and frequency spectrum of a Nd:YAG laser: generation and observation devices

    Article • September 2011, SPIE

    Dr Manuel Fernandez-Guasti, Chandrasekhar Roychoudhuri

  48. Physical processes behind a Ti:Sa femtosecond oscillator

    Article • September 2011, SPIE

    Dr Manuel Fernandez-Guasti, Chandrasekhar Roychoudhuri

  49. Analysis of spectrometric data and detection processes corroborate photons as diffractively evolving wave packets

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  50. Appreciation of the nature of light demands enhancement over the prevailing scientific epistemology

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  51. Microscope and spectroscope results are not limited by Heisenberg's Uncertainty Principle!

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  52. Nature of EM waves as observed and reported by detectors for radio, visible, and gamma frequencies

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  53. Re-interpreting "coherence" in light of Non-Interaction of Waves, or the NIW-Principle

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  54. The constancy of "c" everywhere requires the cosmic space to be a stationary and complex tension field

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  55. Visualizing superposition process and appreciating the principle of non-interaction of waves

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  56. Visualizing the mode evolution process in passive and active cavities based on the NIW-Principle

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  57. Appreciating the principle of Non-Interaction of Waves (NIW-principle) by modeling Talbot diffraction patterns at different planes

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  58. Exploring light-matter interaction processes to appreciate various successes behind the Fourier theorem

    Article • September 2011, SPIE

    Chandrasekhar Roychoudhuri

  59. Various Ambiguities in Generating and Reconstructing Laser Pulse Parameters

    Article • November 2010, IntechOpen

    Chandrasekhar Roychoudhuri

  60. THE CONSILIENT EPISTEMOLOGY: STRUCTURING EVOLUTION OF OUR LOGICAL THINKING

    Article • August 2010, World Scientific Pub Co Pte Lt

    Chandrasekhar Roychoudhuri

  61. Principle of non-interaction of waves

    Article • Journal of Nanophotonics, July 2010, SPIE

    Chandrasekhar Roychoudhuri

  62. Time-gating processes in intra-cavity mode-locking devices like saturable absorbers and Kerr cells

    Article • February 2010, SPIE

    Chandrasekhar Roychoudhuri

  63. Measurement Epistemology and Time-Frequency Conjugate Spaces

    Article • January 2010, American Institute of Physics

    Chandrasekhar Roychoudhuri

  64. Exploring divisibility and summability of 'photon' wave packets in nonlinear optical phenomena

    Article • August 2009, SPIE

    Chandrasekhar Roychoudhuri

  65. Indivisibility of the photon

    Article • August 2009, SPIE

    Chandrasekhar Roychoudhuri

  66. Is indivisible single photon really essential for quantum communications, computing and encryption?

    Article • August 2009, SPIE

    Chandrasekhar Roychoudhuri

  67. What can we learn by differentiating between the physical processes behind interference and diffraction phenomena?

    Article • August 2009, SPIE

    Chandrasekhar Roychoudhuri

  68. Why we need to continue the "What are Photons?" conference: to re-vitalize classical and quantum optics

    Article • August 2009, SPIE

    Chandrasekhar Roychoudhuri

  69. Front Matter: Volume 7421

    Article • August 2009, SPIE

    Chandrasekhar Roychoudhuri

  70. Light-matter interaction processes behind intracavity mode-locking devices

    Article • February 2009, SPIE

    Chandrasekhar Roychoudhuri

  71. Can Photo Sensors Help Us Understand the Intrinsic Differences Between Quantum and Classical Statistical Behaviors?

    Article • January 2009, American Institute of Physics

    Chandrasekhar Roychoudhuri

  72. Generalized quantitative approach to two-beam fringe visibility (coherence) with different polarizations and frequencies

    Article • August 2008, SPIE

    Chandrasekhar Roychoudhuri

  73. Fundamentals of Photonics

    Article • May 2008, SPIE

    Chandrasekhar Roychoudhuri

  74. Bi-centenary of successes of Fourier theorem: its power and limitations in optical system designs

    Article • September 2007, SPIE

    Chandrasekhar Roychoudhuri

  75. Can a deeper understanding of the measured behavior of light remove wave-particle duality?

    Article • August 2007, SPIE

    Chandrasekhar Roychoudhuri

  76. Can we get any better information about the nature of light by comparing radio and light wave detection processes?

    Article • August 2007, SPIE

    Chandrasekhar Roychoudhuri

  77. Can the 'photon interferes only with itself' hypothesis be reconciled with superposition of light from multiple beams or sources?

    Article • August 2007, SPIE

    Chandrasekhar Roychoudhuri

  78. Gravitational Faraday Effect Produced by a Ring Laser

    Article • Foundations of Physics, March 2007, Springer Science + Business Media

    Chandrasekhar Roychoudhuri

  79. If EM fields do not operate on each other, why do we need many modes and large gain bandwidth to generate short pulses?

    Article • February 2007, SPIE

    Chandrasekhar Roychoudhuri

  80. Shall We Climb on the Shoulders of the Giants to Extend the Reality Horizon of Physics?

    Article • January 2007, American Institute of Physics

    Chandrasekhar Roychoudhuri

  81. Multiple‐Beam Interferometers

    Article • November 2006, Wiley

    Chandrasekhar Roychoudhuri

  82. Do we count indivisible photons or discrete quantum events experienced by detectors?

    Article • October 2006, SPIE

    Chandrasekhar Roychoudhuri

  83. Various ambiguities in re-constructing laser pulse parameters

    Article • October 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Chandrasekhar Roychoudhuri

  84. The Locality of the Superposition Principle Is Dictated by Detection Processes.

    Article • Physics Essays, September 2006, Physics Essays Publication

    Chandrasekhar Roychoudhuri

  85. If EM fields do not operate on each other, how do we generate and manipulate laser pulses?

    Article • August 2006, SPIE

    Chandrasekhar Roychoudhuri

  86. A critical look at the source characteristics used for time varying fringe interferometry

    Article • August 2006, SPIE

    Chandrasekhar Roychoudhuri

  87. Role of the retinal detector array in perceiving the superposition effects of light

    Article • August 2006, SPIE

    Professor Vasudevan Lakshminarayanan, Chandrasekhar Roychoudhuri

  88. Are dark fringe locations devoid of energy of superposed fields?

    Article • August 2006, SPIE

    Chandrasekhar Roychoudhuri

  89. Reality of superposition principle and autocorrelation function for short pulses

    Article • February 2006, SPIE

    Chandrasekhar Roychoudhuri

  90. The nature of light: what are photons?

    Article • SPIE Newsroom, January 2006, SPIE

    Chandrasekhar Roychoudhuri

  91. A generalized formulation for high resolution spectrometer fringes using the case of a short pulse

    Article • October 2005, SPIE

    Chandrasekhar Roychoudhuri

  92. If superposed light beams do not re-distribute each others energy in the absence of detectors (material dipoles), can an indivisible single photon interfere by/with itself?

    Article • August 2005, SPIE

    Chandrasekhar Roychoudhuri

  93. What are the processes behind energy re-direction and re-distribution in interference and diffraction?

    Article • August 2005, SPIE

    Chandrasekhar Roychoudhuri

  94. Effect of optical beat interference on channel spacing in DWDM optical systems

    Article • April 2005, SPIE

    Chandrasekhar Roychoudhuri

  95. Propagating Fourier frequencies vs. carrier frequency of a pulse through spectrometers and other media

    Article • August 2004, SPIE

    Chandrasekhar Roychoudhuri

  96. Fourier transforms in classical optics

    Article • October 2003, SPIE

    Chandrasekhar Roychoudhuri

  97. How does energy separate in the fringes produced by intersecting beams?

    Article • October 2003, SPIE

    Chandrasekhar Roychoudhuri

  98. The Global Photonics Education Network: another way to think globally and act locally

    Article • October 2003, SPIE

    Chandrasekhar Roychoudhuri

  99. Limits of DWDM with gratings and Fabry-Perots and alternate solutions

    Article • August 2003, SPIE

    Chandrasekhar Roychoudhuri

  100. Measuring properties of superposed light beams carrying different frequencies

    Article • Optics Express, April 2003, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  101. Results and comparison of a cladding pumped fiber simulation using a decagon-shaped fiber

    Article • Optics Express, April 2003, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  102. Fourier transforms in classical optics

    Article • January 2003, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  103. Updateable and customizable educational materials

    Article • May 2002, SPIE

    Chandrasekhar Roychoudhuri

  104. Tunable picosecond pulses from gain-switched grating-coupled surface-emitting laser

    Article • May 2002, SPIE

    Chandrasekhar Roychoudhuri

  105. High-power grating-coupled surface-emitting diode lasers

    Article • October 2001, SPIE

    Chandrasekhar Roychoudhuri

  106. Design of high finesse, wideband Fabry-Pe´rot filter based on chirped fiber Bragg grating by numerical method

    Article • Optical Engineering, July 2000, SPIE

    Chandrasekhar Roychoudhuri

  107. 100 W 50 ps gain-switched pulses from vertical-stack laser diode

    Article • Electronics Letters, January 2000, the Institution of Engineering and Technology (the IET)

    Chandrasekhar Roychoudhuri

  108. Laser Desktop Machining

    Article • December 1999, Wiley

    Chandrasekhar Roychoudhuri

  109. Broad tunability of grating coupled surface-emitting laser with external cavity

    Article • Electronics Letters, January 1999, the Institution of Engineering and Technology (the IET)

    Chandrasekhar Roychoudhuri

  110. Editorial introduction

    Article • Psychology Crime and Law, July 1998, Taylor & Francis

    Professor Clive R. Hollin, Professor Yang-Tse Cheng, Chandrasekhar Roychoudhuri

  111. Desktop manufacturing using diode lasers

    Article • June 1998, SPIE

    Chandrasekhar Roychoudhuri

  112. Diffraction of an extremely short optical pulse

    Article • Journal of the Optical Society of America A, February 1998, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  113. <title>Rapid product development technologies using a diode laser</title>

    Article • January 1997, SPIE

    Chandrasekhar Roychoudhuri

  114. Potential role of high-power laser diode in manufacturing

    Article • April 1996, SPIE

    Chandrasekhar Roychoudhuri

  115. Letter: November 1994 special section [see 33(11)3504(Nov1994)]

    Article • Optical Engineering, January 1995, SPIE

    Chandrasekhar Roychoudhuri

  116. Guest Editorial: Special Section on Micro-Optics

    Article • Optical Engineering, November 1994, SPIE

    Chandrasekhar Roychoudhuri

  117. Backscatter-Modulation Semiconductor Laser Radar

    Article • September 1989, SPIE

    Dr. Peter J de Groot, Chandrasekhar Roychoudhuri

  118. Coherent operation of an array of diode lasers using a spatial filter in a Talbot cavity

    Article • Applied Physics Letters, August 1989, American Institute of Physics

    Chandrasekhar Roychoudhuri

  119. Spectrally Stable Miniature External Cavity Laser Oscillator

    Article • July 1989, SPIE

    Chandrasekhar Roychoudhuri

  120. Mode Control Of An Array Of Algaas Lasers Using A Spatial Filter In A Talbot Cavity

    Article • June 1989, SPIE

    Chandrasekhar Roychoudhuri

  121. Laser Beam Combining Technology

    Article • April 1987, SPIE

    Chandrasekhar Roychoudhuri

  122. Engineering optics

    Article • Proceedings of the IEEE, January 1987, Institute of Electrical & Electronics Engineers (IEEE)

    Chandrasekhar Roychoudhuri

  123. Dynamic wavelength tuning of single-mode GaAlAs lasers

    Article • IEEE Journal of Quantum Electronics, February 1982, Institute of Electrical & Electronics Engineers (IEEE)

    Chandrasekhar Roychoudhuri

  124. Multimode fiber-optic interferometry

    Article • Applied Optics, June 1980, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  125. Concepts of spectroscopy of pulsed light

    Article • January 1980, American Institute of Physics

    Chandrasekhar Roychoudhuri

  126. <title>Interferometry Through Single-Mode Optical Fibers</title>

    Article • December 1979, SPIE

    Chandrasekhar Roychoudhuri

  127. On the Propagation of Coherent and Partially Coherent Light

    Article • Optica Acta International Journal of Optics, January 1979, Taylor & Francis

    Chandrasekhar Roychoudhuri

  128. Heisenberg's microscope?A misleading illustration

    Article • Foundations of Physics, December 1978, Springer Science + Business Media

    Chandrasekhar Roychoudhuri

  129. Holographic nondestructive testing at the Fourier plane

    Article • Applied Optics, March 1978, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  130. Stable multipass Fabry-Perot interferometer: design and analysis

    Article • Applied Optics, September 1977, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  131. Passive Pulse Shaping Using Delayed Superposition

    Article • Optical Engineering, April 1977, SPIE

    Chandrasekhar Roychoudhuri

  132. Temporal coherence length and speckle: a simultaneous approach to those problems in holography; authors’ reply to comment

    Article • Applied Optics, July 1976, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  133. Demonstrations using a Fabry–Perot. II. Laser modes display

    Article • American Journal of Physics, December 1975, American Association of Physics Teachers (AAPT)

    Chandrasekhar Roychoudhuri

  134. Response of Fabry–Perot interferometers to light pulses of very short duration

    Article • Journal of the Optical Society of America, December 1975, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  135. Temporal coherence length and speckle: a simultaneous approach to those problems in holography

    Article • Applied Optics, September 1975, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  136. Spatial filtering and image positive–negative reversal

    Article • Applied Optics, July 1975, Optical Society of America (OSA)

    Chandrasekhar Roychoudhuri

  137. A holographic, radial and lateral shear interferometer

    Article • Optics Communications, September 1974, Elsevier

    Chandrasekhar Roychoudhuri

  138. Application Of Local Reference Beam Holography To The Study Of Laser Beam Parameters

    Article • Optical Engineering, August 1974, SPIE

    Chandrasekhar Roychoudhuri

  139. Dynamic and multiplex holography with scanning Fabry-Pérot fringes

    Article • Optics Communications, February 1974, Elsevier

    Chandrasekhar Roychoudhuri

  140. Infrared holography with 4-Z emulsion

    Article • Optics Communications, January 1974, Elsevier

    Chandrasekhar Roychoudhuri

  141. Brillouin spectra of CaF2 microcrystals using a stable 3-pass Fabry-Perot interferometer

    Article • Applied Physics Letters, November 1973, American Institute of Physics

    Chandrasekhar Roychoudhuri