Diffraction Limit Calculator
Calculate diffraction-limited optical performance including Airy disk parameters, resolution limits, and minimum achievable spot sizes for laser focusing and imaging systems.
Laser wavelength
NA of focusing optics
Lens focal length
1/e² beam diameter
Medium refractive index
Beam quality factor
Diffraction Analysis Results
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Optical Performance
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Diffraction Formulas
Airy Disk Radius:
r = 1.22λ / (2NA) Diffraction-Limited Spot Size:
w₀ = M² × λ / (π × NA) Rayleigh Criterion:
θ = 1.22λ / D Depth of Focus:
DOF = 2λn / NA² Applications
- Laser processing system design
- Microscopy resolution analysis
- Optical storage systems
- Laser marking and engraving
- Beam quality assessment
- Optical system optimization