2010 Nano-Biophotonics Summer School @ UIUC Lecture 4 - Gaussian beam propagation - Elastic light scattering - Dynamic light scattering

25 Sep 2010 | Online Presentations | Contributor(s): Gabriel Popescu

Often, experiments involve light beams. A light beam can be defined as a distribution of field that fulfills the approximation in Eq. 20, i.e. is characterized by a dominant wave vector component, k(z) >> k(x) , k(y) . A beam is, therefore, the spatial equivalent of quasimonochromatic light, …

2010 Nano-Biophotonics Summer School at the University of Illinois at Urbana-Champaign

20 Sep 2010 | Workshops | Contributor(s): Gabriel Popescu, Stephen Boppart, Rohit Bhargava, Logan Liu, Nahil Sobh

The 2010 summer school covers: Principles of Nano-Biophotonics Technology and methods of investigation Current research (e.g. biomolecular sensing, nanoprobes, nonlinear microscopy, nanoscopy, nanoplasmonics)

Illinois iOptics Seminar Series

17 May 2010 | Series | Contributor(s): Gabriel Popescu, Mustafa Mir, Vikram Chaudhery, Brian Cunningham

The Optical Society of America and the SPIE local student chapters are sponsoring the 2nd iOptics seminar series.The series includes lectures from graduate students, post-docs and faculty working at the cutting edge of optics and photonics research.

Illinois iOptics Lecture 3: A tissue scattering-phase theorem

17 May 2010 | Online Presentations | Contributor(s): Gabriel Popescu

We have derived two mathematical relationships between quantitative phase images of thin tissue slices and the scattering parameters of the bulk, i.e. scattering mean free path, ls, and anisotropy factor, g. The ls turns out to be inversely proportional to the mean-squared phase shift and g is …

Cyber-Infrastructure for Imaging and Simulation of Molecular and Cellular Mechanics (CISMCM)

27 Oct 2009 | Tools | Contributor(s): Raheem Syed, Umberto Ravaioli, Gabriel Popescu, Nahil Sobh

Simulation-Driven Science Project

Illinois 2009 nano-biophotonics Summer School, Lecture 4: Dynamic Light Scattering

27 Oct 2009 | Notes | Contributor(s): Gabriel Popescu

Dynamic Light Scattering Topics: DLS Typical Geometry Simplistic Picture: Young Interferometer 1st Order Correlation (g1)- DLS Viscous Media and Brownian Motion Observations Brownain Motion Coherence Effects Experimental Geometries Other Applications …

2009 Nano-Biophotonics Summer School - University of Illinois at Urbana-Champaign

01 Oct 2009 | Workshops | Contributor(s): Gabriel Popescu, Nahil Sobh

Nano-Biophotonics Summer School Topics: Optics Theories EM Spectrum Index of Refraction Ray Optics FERMAT's Principle HERO's Principle Reflection Refraction Planar Boundaries Total Internal Reflection Spherical Lenses Thin Lens (Focusing) Thin Lens …

Illinois 2009 nano-biophotonics Summer School, Lecture 3: Elastic Light Scattering

21 Sep 2009 | Online Presentations | Contributor(s): Gabriel Popescu

Elastic Light Scattering Topics: Light Scattering by Inhomogeneous Media Scattering on Single Particles Scattering on Simple Particles Rayleigh Scattering The Born Approximation The Spatial Correlation Function Single Particle Under Born approximation Ensemble of …

imageJ

03 Apr 2009 | Tools | Contributor(s): Raheem Syed, Nahil Sobh, Umberto Ravaioli, Gabriel Popescu, Mohamed Mohamed

It can display, edit, analyze, process, save and print 8-bit, 16-bit and 32-bit images. It can read many image formats.

Illinois ECE 460 Principles of Optical Imaging (Fall 2008)

30 Jul 2008 | Courses | Contributor(s): Gabriel Popescu

Introduction to visible and infrared imaging systems covering fields, optical elements, electronic sensors, and embedded processing systems. Lectures and labs cover active and passive illumination, ranging, holography, polarization, coherence, spectroscopy, and sampling with an emphasis on …

Illinois ECE 460 Optical Imaging, Chapter 6: Interferometry

29 Jul 2008 | Teaching Materials | Contributor(s): Gabriel Popescu, Andre da Costa, Christopher Nixon, Glen Svenningsen

This chapter explains the principles of interferometry, among its topics are: Superposition of fields, Monochromatic Fields, many type of interferometry, Temporal Coherence, etc.Notes developed by Professor Gabriel Popescu from University of Illinois at Urbana-Champaign

Illinois ECE 460 Optical Imaging, Chapter 1: Introduction to Optical Imaging

28 Jul 2008 | Teaching Materials | Contributor(s): Gabriel Popescu, Andre da Costa, Christopher Nixon, Glen Svenningsen

This presentation introduce some basic but fundamental concepts related to optical imaging: Electrical Magnetic Field, Frequency Domain, Measurable Quantities and the Uncertainty Principle. These notes will be used in the introductory classes of the course ECE 460 - Optical Imaging at UIUC.Notes …

Illinois ECE 460 Optical Imaging, Chapter 2: A Mathematical Toolbox for Optical Imaging

28 Jul 2008 | Teaching Materials | Contributor(s): Gabriel Popescu, Andre da Costa, Christopher Nixon, Glen Svenningsen

The objective of this presentation is to introduce the students to a set of tools that will be useful throughout the course, among these tools are: Green's Function, Fourier Transforms, Basic Theorems with Fourier Transform, Convolution, Correlation, Refraction and Absorption and Maxwell's …

Illinois ECE 460 Optical Imaging, Chapter 3: Imaging

28 Jul 2008 | Teaching Materials | Contributor(s): Gabriel Popescu, Andre da Costa, Christopher Nixon, Glen Svenningsen

This chapter presents Geometrical Optics and also Fourier Optics, two important topics that precede Microscopy. Some of the covered concepts are: Fermat's Principle, Snell's Law, Thick and Thin Lens, System of Lens,Fraunhofer Approximation and Huygens-Fresnel principle.Notes developed by Professor …

Illinois ECE 460 Optical Imaging, Chapter 4: Microscopy

28 Jul 2008 | Teaching Materials | Contributor(s): Gabriel Popescu, Andre da Costa, Christopher Nixon, Glen Svenningsen

This chapter presents the main concepts and techniques of Microscopy: Resolution, Contrast, Dark Field Microscopy, Schlieren Method, Phase Contrast Microscopy, Quantitative Phase Microscopy and many other techniques.Notes developed by Professor Gabriel Popescu from University of Illinois at …

Illinois ECE 460 Optical Imaging, Chapter 5: Light Scattering

29 Jul 2008 | Teaching Materials | Contributor(s): Gabriel Popescu, Andre da Costa, Christopher Nixon, Glen Svenningsen

This chapter covers important topics related to Light Scattering: Simple particles, Rayleigh Scattering, The Born Approximation, Spatial Correlation, Ensemble of Particles, The Transport Equation, etc.Notes developed by Professor Gabriel Popescu from University of Illinois at Urbana-Champaign.