Optics Forum

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High School Question about the color of a thin film
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2K
Graduate Free‑Carrier Index Modulation in Thin Transparent Layers at Visible Wavelengths
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2
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568
Graduate Feasibility of Micro‑Plasma–Induced Refractive‑Index Phase Modulation
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5
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677
Graduate ZBLAN fiber simulation Matlab
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0
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440
Undergrad Higher magnification calibration slide
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5
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660
Undergrad Pentaprism with magnification, which surface is curved?
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6
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3K
High School Volumetric Holographic Displays
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5
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Graduate Physical intuition for FSR dependence on cavity length d in a scanning Fabry-Pérot interferometer
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7
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High School Reflection from double glazed window
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9
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4K
Undergrad How do I stretch a laser from a beam into a sheet?
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Undergrad An Imagined Diffraction Grating
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7
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Graduate How to model converging illumination through object plane (in ZEMAX)
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1
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Graduate Simple math model for a Particle Image Velocimetry system
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6
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High School Highway: Deriving speed from Doppler shift
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20
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High School The focal length of the eye and image inversion
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12
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3K
High School A quartet of epi-illumination methods
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3
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1K
High School Can Light Speed Be Increased by Straightening Its Wave Path?
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11
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1K
Undergrad Effective absorption coefficient of gold nanoparticles
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5
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2K
Undergrad Energy of Electromagnetic Waves in Destructive Interference
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71
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Undergrad DMD optical Setup: Diffraction-limited resolution
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3
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1K
High School Purity of Interference Pattern in a Classical Double-slit Experiment
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23
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3K
Undergrad Is This....Right? Splitting LED colors is not working for me
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40
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5K
Graduate When should I analyze optical problems using ray tracing vs. wavefront analysis?
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12
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Undergrad Color and appearance of a "pile" of biological viruses
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10
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Undergrad Problem with light-ray construction
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4
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2K
High School Rainbow light reflection on TV from my hand
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10
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2K
High School Aperiodic Diffraction Grating
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3
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2K
Undergrad Energy Redistribution in Lorentz Oscillator Model with Pure Radiation Damping
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2
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2K
High School Deriving Snell's Law
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1
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2K
Undergrad Mie scattering in clouds at 940 nm
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29
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3K
Graduate Infrared spectrophotometer DIY
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3
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2K
Graduate A double slit thought experiment leading to a paradox
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5
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3K
Undergrad Weird Depictions of Birefringence with Angle of Incidence 0°
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2
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2K
Undergrad Creating White LEDs: Phosphor vs RGB
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5
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2K
High School Help with refraction of light
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9
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2K
Undergrad Confusion about line pairs per millimeter
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4
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3K
Graduate Trying to source Photochromic lenses based on laboratory data
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1
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2K
Graduate Effects of coherence length on optical interference filter
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66
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8K
Undergrad Fresnel Zone Equation Problem
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8
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3K
Graduate Tilting mirror in Fourier plane
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9
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2K
Graduate Zemax raytracing and which lens element is the STOP
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10
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Undergrad Explanation for homemade digital microscope's optical systems?
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4
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3K
Undergrad Digital Micromirror Device based optical setup
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7
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3K
High School The principle of operation and application of optical lenses
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14
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3K
Undergrad Can the wavelength of an EM wave exceed the size of the observable universe?
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17
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3K
Undergrad How Can I Expand and Collimate a Laser Pointer Beam Using Basic Optics?
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2
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2K
Undergrad How to couple light from a very small source into spectrometer?
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10
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2K
Undergrad Understanding magnification of concave mirrors for near-eye situation?
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11
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3K
Undergrad LED Detection Range with Night Vision Goggles?
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3
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2K
High School How would light work on a mirror very far away?
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11
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Undergrad Is Fluorescence Possible in Twilight?
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25
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Undergrad On Mixing Colors of Light
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207
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15K
Undergrad Why not use dichroic filters in modern solid state cameras?
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4
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3K
Undergrad Using primary color light filters
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20
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3K
High School Interference in Thin Films
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14
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2K
Undergrad Snell's law from a mechanical model
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12
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3K
Undergrad Dispersion: Why are Sine-like Functions Fundamental?
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6
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2K
Undergrad Recreating Spectral Response from 6-Channel Color Sensor
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6
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4K
High School Difference between holographic paper and diffraction gratings?
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30
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6K
Graduate Limitations on complex angle of refractions
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1
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High School Is all EM radiation light?
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35
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Graduate Relative efficiency of SHG vs SFG
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6
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Undergrad Spectrometer Shows More Blue light on cloudy Day....why?
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4
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Undergrad Why is there a sharp spike of blue light in my spectrometer readings?
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9
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Undergrad Image construction with concave and convex mirrors
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4
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Undergrad How Can I Achieve a Non-Direct Reflection Effect on Plexiglass at 90 Degrees?
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18
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3K
Graduate Can 3D Holograms Be Created by Exciting Nitrogen Molecules in Air?
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3
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Graduate How should the optical diffraction field be solved?
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8
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2K
Graduate The coherence length is much longer than the manufacturer claims
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10
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3K
Graduate Optics: how gather and align light from a scene?
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3
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Graduate Aberration with explicit dependance on object coordinates
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4
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Graduate Is the Speed of Light Different in a Casimir Vacuum?
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4
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Undergrad TE and TM polarization parallel definition
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1
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Undergrad Visibility when looking down through a Glass Bottom Boat
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4
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Undergrad How Can I Create a Mirror Reflection Illusion?
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5
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3K
Unusual circular reflections on our windows before sunset
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1
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2K
High School Huh? Seeing crisp vitreous floaters while using microscope
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7
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4K
Undergrad Newton's rings at an oblique angle of incidence of light
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1
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2K
High School What happens to the energy in destructive interference?
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6
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Graduate Frequency Domain and pixel size
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1
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2K
Undergrad How to interpret the difference in height between two people in this Ames room?
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4
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2K
Undergrad Need Help Understanding Echelle Diffraction Gratings
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4
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Undergrad Condenser lens retrofit for a lighting application
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24
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3K
Undergrad Is Geometrical Optics Essential for a Deeper Understanding of Light?
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10
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High School Spherical Lens Model and Proof
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2
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3K
Undergrad Question about two interference patterns viewed at infinity
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7
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3K
High School Can a magnifying mirror or prism be used somehow as a low-tech reading aid for the visually impaired?
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11
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3K
Graduate Blackbody Radiation and Complex Refractive Index
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6
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Graduate Is a diffuse scatterer necessarily a Lambertian emitter?
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24
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Undergrad Looking for information on Verity SD100 monochromator unit
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27
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Undergrad Why tilting a diffraction grating produces tilted dots
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3
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3K
Graduate Interpretation of a complex angle of refraction
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1
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Undergrad The double-slit experiment with a pit in the screen
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Graduate What materials, if any, are transparent to Long Wave IR?
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9K
Graduate How to observe difference of L/R rotation intensity of CPL
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2
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Graduate Increase in numerical aperture leads to a decrease in line width?
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4
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3K
Undergrad Ray Tracing Software for Broadband Lasers
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2
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3K
Undergrad The detection of the carrier-envelope offset frequency (fCEO) of optical signal
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0
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2K
Undergrad Light / lumens question about photography exposure times
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17
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2K
Graduate Eigenvectors of the Permittivity Tensor in Periodic Dielectrics
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2
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2K