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PH-101
Wave Optics: Double-Slit Interference & Diffraction Laboratory
Virtual Optical Bench & Screenλ = 632.8 nm (Red (632.8nm He-Ne / 650nm Diode))
Fringe Width (w)3.797 mm
Diffraction Envelope Width37.97 mm
Missing Orders m5, 10, 15, 20
Probe Irradiance at 0.0mm100.0%
Spatial Irradiance Profile I(x) Across Screen (mm)
I(x) = I₀ · (sinα/α)² · cos²βOptical Bench Controls
Wavelength λ (nm):632.8 nm
Slit Separation d (mm):0.25 mm
Slit Aperture Width a (mm):0.050 mm
Screen Distance D (m):1.50 m
Photodetector Probe x (mm):0.00 mm
Fringe Separation:3.797 mm
Aperture Ratio (d/a):5.00
Central Fringes Count:~9