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I How to narrow a beam to 1 mm diameter?
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1
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75
I Interference of two ultra short laser pulses
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9
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143
B Questions about the Paraxial region for a single spherical surface
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24
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268
A Collimation of a Gaussian beam
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8
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677
I It's still not clear to me what's the limit of light propagation
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186
I Factors that influence depth of field
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A Fourier Optics: Why a Plane Wave contributes to just a single point
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345
I Will cooling or heating a pair of binoculars change the transmitted image?
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202
I Permittivity (epsilon) change via temperature + optics effect?
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3
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189
I Explanation for homemade digital microscope's optical systems?
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3
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432
I Microring resonator matrix
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3
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303
Mirror phenomenon — Concentric halos around eyes in a foggy bathroom
2
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B How would someone see light from something like a flashlight in a tunnel?
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6
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401
B Did Thomas Young Misinterpret His Double Slit Experiment Results?
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738
B Horizon and Curvature Observations
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23
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574
I Laser and nano-holes experiment
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3
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848
Measure the transmission curve and wavelengths of colored mineral glass
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5
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443
B How to build a simple polarization filter
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11
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472
B Light beams and their reflection
2
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64
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B How to Troubleshoot a Lens Focusing Issue with a DIY DSLR Lens
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10
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619
I Exploring Co-Phasal Wave Fronts in Fizeau Interferometry
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723
I Why Are Reflected Rays Often Ignored in Lens Studies?
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5
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487
I Lumens and actual power of luminous flux
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16
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823
I What travels faster: visible light in water or X-rays in liquid mercury?
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6
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696
I Looking for information on Verity SD100 monochromator unit
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24
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885
B Pfund's method for refraction
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11
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978
I Does a Fabry Perot cavity charge in discrete steps?
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1K
A Mach Zehnder Interferometer Interference fringes issue
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10
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725
A Simulating collecting efficency of a LiDAR
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2
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549
A Question about detector and lens
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12
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750
B Understanding Corrective Lenses: Examining Reversed Prescriptions
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5
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883
A About collimation in Czerny-Turner spectrometers
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783
I Calculating the Raleigh Criterion constant to 99 significant figures
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1K
I Need Help Identifying Old Optic Device
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6
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894
I Lens Calculations to Focus Light
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10
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I What website/software can draw optics setups like this?
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1
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818
I Recreating Spectral Response from 6-Channel Color Sensor
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807
A Diffraction theory, power density and angle of incidence
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5
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937
I Help with sourcing a specific type of integrating sphere
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2
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774
I Measuring reflectance of a non-planar object w/ an integrating sphere
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6
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940
I Creating a wavelength selectable light source with diffraction grating
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2
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804
I What happens if I place light sources on the plane perpendicular to the principle axis of cylindrical lens?
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1
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715
How to find the orientation of polarization of a polarizer
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6
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4K
I Can n-slit interference produce subwavelength stripes?
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6
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874
B (Huygens) Irving Giant Pinhole variation: Extend it with a 70 mm tube?
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874
I How Does Diffraction Influence Shadows and Optical Observations?
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3
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896
I Optical Effect: curved light source when seen through the bus window
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5
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907
I Can an Aspheric Lens Narrow the FOV for Motion Detection Systems?
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1
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921
I How is IR ink able to be seen with specialized filters?
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3
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896
I Can I Use Additional Wavelengths for a More Advanced Hue Calculation?
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19
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1K
I Optical pumping vs Rabi cycle - what is the difference between their conditions?
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5
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1K
B Huygens Question - Using a Pinhole Box in the Giant Pinhole Irvine
3
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70
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I How different is a calcite crystal from a polarizer?
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3
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1K
I Reflection, refraction, and Snell's law
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23
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I Huygens' principle doubt -- How do different shapes of wavefronts appear to the human eye?
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28
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2K
Define the polarization in TE/TM modes
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4
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13K
I Sine laws of spherical singlets
3
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Looking for trigonometric ray tracing software for optics
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22
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2K
A Spherical aberration in Biconvex lens
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9
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2K
A Calculating the optical depth of an inhomogeous gas
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1
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976
I Sagnac Interferometer (Fiber Gyro)
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1
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953
I Automatic double lens glasses?
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3
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1K
I My spectacles defy the laws of physics
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13
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I Tilted plane wave through a 2 lens system
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5
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A Stimulated emission/absorption - which equations act on external targets?
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2
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1K
B Scattering of light by dust particles
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I Stimulated Emission & Emitted photon direction
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B Why are light waves depicted as lines, circles, and sinusoids?
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18
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B Is this material is good for fiber optics and who would buy it?
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B Scattering of light inside a room
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22
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A How is it possible to measure an IR LED source in mW/sr?
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I How to Measure Magnification of a Lens System with Liquid Surface
2
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40
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A What exactly is deconvolution doing?
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13
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I Questions About Bragg's Law of X-Ray Diffraction
2
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54
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I 2mm x 2mm mirror array construction - can you help?
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2
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1K
I Optics: infinite light source illusion question - can you help?
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8
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1K
I Photodetector Output & Refractive Index of FO Cladding/Coating
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1
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B Does light propagate as a wave of little bullets?
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34
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2K
I May I treat the light from a star as a light beam?
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11
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Light Transmission Through Half-Hollow Sphere
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5
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B Does light ever go from the eye to the image?
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17
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2K
B Shouldn't the refracted ray be along the boundary here?
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5
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1K
B Shape of Lenses -- Why are they always circular?
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12
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I Why do we use low-coherence light in Optical Coherence Tomography?
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1K
I How Does Light Remain After Polarization Despite Changes in Its Electric Field?
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10
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I Light Refraction, Biconvex Lens, Diagram Help
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9
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A Four-way beamsplitter implementation
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4
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I Outer layer refractive index - total internal refection on waveguide
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2
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B A cone of photons from one (of many seen objects) hits the retina....
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25
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I Exploring Particle/Wave Duality in Photons
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12
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1K
Evaluate the outgoing radiation from an optical fiber on a surface
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1
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1K
I Applications of Virtual objects
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9
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2K
I The kinetic energy of proton-electron for a black body
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8
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B What Powers Light? Exploring Photon Energy Across the Galaxy
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13
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A Fourier optics model of a 4f system
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I Grating Resolving Power of Laser Beams with Gaussian Distribution
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I Class debate: Everything we see is a result of reflected light
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18
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I William Herschel's light experiment
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15
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I Issues collimating my laser with 4f system
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9
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2K
I Expose a Hidden Message w/ Polarisation Filters
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5
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1K

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