Optics Forum

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Undergrad How do I stretch a laser from a beam into a sheet?
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Graduate How to model converging illumination through object plane (in ZEMAX)
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705
Graduate Simple math model for a Particle Image Velocimetry system
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Undergrad Pentaprism with magnification, which surface is curved?
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High School The focal length of the eye and image inversion
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High School A quartet of epi-illumination methods
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662
Undergrad Effective absorption coefficient of gold nanoparticles
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827
Undergrad Energy of Electromagnetic Waves in Destructive Interference
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Undergrad DMD optical Setup: Diffraction-limited resolution
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670
High School Purity of Interference Pattern in a Classical Double-slit Experiment
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Undergrad Is This....Right? Splitting LED colors is not working for me
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High School Rainbow light reflection on TV from my hand
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High School Aperiodic Diffraction Grating
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Undergrad Energy Redistribution in Lorentz Oscillator Model with Pure Radiation Damping
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High School Deriving Snell's Law
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Undergrad Mie scattering in clouds at 940 nm
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Graduate Infrared spectrophotometer DIY
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Graduate A double slit thought experiment leading to a paradox
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Undergrad Confusion about line pairs per millimeter
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Graduate Trying to source Photochromic lenses based on laboratory data
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Effects of coherence length on optical interference filter
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Graduate Tilting mirror in Fourier plane
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Graduate Zemax raytracing and which lens element is the STOP
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Undergrad Explanation for homemade digital microscope's optical systems?
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Undergrad Digital Micromirror Device based optical setup
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High School The principle of operation and application of optical lenses
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Undergrad Can the wavelength of an EM wave exceed the size of the observable universe?
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Undergrad How Can I Expand and Collimate a Laser Pointer Beam Using Basic Optics?
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Undergrad How to couple light from a very small source into spectrometer?
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Undergrad Understanding magnification of concave mirrors for near-eye situation?
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Undergrad LED Detection Range with Night Vision Goggles?
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Undergrad Snell's law from a mechanical model
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12
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Undergrad Dispersion: Why are Sine-like Functions Fundamental?
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Undergrad Recreating Spectral Response from 6-Channel Color Sensor
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Graduate Limitations on complex angle of refractions
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Graduate Relative efficiency of SHG vs SFG
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Undergrad Spectrometer Shows More Blue light on cloudy Day....why?
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Undergrad Why is there a sharp spike of blue light in my spectrometer readings?
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Undergrad Image construction with concave and convex mirrors
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Undergrad How Can I Achieve a Non-Direct Reflection Effect on Plexiglass at 90 Degrees?
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Graduate How should the optical diffraction field be solved?
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Graduate The coherence length is much longer than the manufacturer claims
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Graduate Optics: how gather and align light from a scene?
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Graduate Aberration with explicit dependance on object coordinates
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Is the Speed of Light Different in a Casimir Vacuum?
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Undergrad Visibility when looking down through a Glass Bottom Boat
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Undergrad How Can I Create a Mirror Reflection Illusion?
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High School Reflection from double glazed window
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Unusual circular reflections on our windows before sunset
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High School Huh? Seeing crisp vitreous floaters while using microscope
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Undergrad Newton's rings at an oblique angle of incidence of light
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Undergrad Need Help Understanding Echelle Diffraction Gratings
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Undergrad Condenser lens retrofit for a lighting application
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High School Spherical Lens Model and Proof
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Undergrad Question about two interference patterns viewed at infinity
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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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Graduate Blackbody Radiation and Complex Refractive Index
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Undergrad Looking for information on Verity SD100 monochromator unit
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Undergrad Why tilting a diffraction grating produces tilted dots
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Graduate Interpretation of a complex angle of refraction
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Undergrad The double-slit experiment with a pit in the screen
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Graduate How to observe difference of L/R rotation intensity of CPL
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Increase in numerical aperture leads to a decrease in line width?
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Undergrad Ray Tracing Software for Broadband Lasers
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Undergrad The detection of the carrier-envelope offset frequency (fCEO) of optical signal
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Undergrad Compact Fresnel reflector or diffractive grating?
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Undergrad It's still not clear to me what's the limit of light propagation
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Undergrad Viewing 1k x 1k slab of desert sand during extreme cold/hot temps?
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Undergrad How Can I Build an Effective DIY Helmet-Mounted HUD?
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Graduate Ansys FDTD simulation for phase change due to reflection
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Undergrad Interference of two ultra short laser pulses
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Undergrad Prism Spectrometer Objective: Optics Question
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Undergrad How to narrow a beam to 1 mm diameter?
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High School Questions about the Paraxial region for a single spherical surface
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Graduate Collimation of a Gaussian beam
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Undergrad Factors that influence depth of field
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Graduate Fourier Optics: Why a Plane Wave contributes to just a single point
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Undergrad Will cooling or heating a pair of binoculars change the transmitted image?
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Undergrad Permittivity (epsilon) change via temperature + optics effect?
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Undergrad Microring resonator matrix
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Mirror phenomenon — Concentric halos around eyes in a foggy bathroom
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High School How would someone see light from something like a flashlight in a tunnel?
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High School Did Thomas Young Misinterpret His Double Slit Experiment Results?
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High School Horizon and Curvature Observations
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Undergrad Laser and nano-holes experiment
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Measure the transmission curve and wavelengths of colored mineral glass
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High School How to build a simple polarization filter
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High School Light beams and their reflection
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High School How to Troubleshoot a Lens Focusing Issue with a DIY DSLR Lens
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Undergrad What Are Co-Phasal Wave Fronts in Fizeau Interferometry?
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Undergrad Why Are Reflected Rays Often Ignored in Lens Studies?
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Undergrad Lumens and actual power of luminous flux
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Undergrad What travels faster: visible light in water or X-rays in liquid mercury?
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High School Why is there a second black ring in Pfund's method with water on the Petri Dish?
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Undergrad Does a Fabry Perot cavity charge in discrete steps?
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Graduate Mach Zehnder Interferometer Interference fringes issue
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Graduate Simulating collecting efficency of a LiDAR
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Graduate Question about detector and lens
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High School Understanding Corrective Lenses: Examining Reversed Prescriptions
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Graduate About collimation in Czerny-Turner spectrometers
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