Angle Calculator

 
 
  •  θ = angle of incidence (deg)
  •  θm = angle of diffraction of the mth order (deg)
  •  λ = wavelength of light (nm)
  •  τ = pulse delay time (ps)
  •  s = perpendicular separation between two gratings used to compress a pulse (m)
  •  dθm/dλ = angular dispersion, or change in angle of diffraction with wavelength (deg/nm)
  •  (1/s)dτ/dλ = temporal dispersion, or change in pulse delay time with wavelength per meter of separation between two identical, parallel gratings (ps/nm per meter)