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      Diffracted Angle and Littrow Angle of Reflective Gratings


      This Calculator Will Help You To calculate The Diffracted Angle For A Given Incidence Angle and The Littrow Angle of Reflective Gratings.

      If m is negative, it means that the diffracted light and diffracted light are on the same side of the normal. If m is positive, it means that the diffracted light and diffracted light are on the opposite side of the normal.

      $\frac{[ sin(\theta_m) + sin(\theta_i)]}{N}$= $m \lambda$

      $\theta$=arcsin$\frac{N m \lambda}{2}$

      Raster Line Density $N$; Incidence Angle $\theta_i$; Order $m$; Wavelength $\lambda$
      Diffracted Angle $\theta_m$; Littrow Angle $\theta$;

      Input
      Raster Line Density, $N$:
      1/mm
      Incidence Angle, $\theta_i$:
      degree (°)

      Order, $m$:
      Wavelength, $\lambda$:
      nm


      Output
      Diffracted Angle, $\theta_m$:
      degree (°)

      Littrow Angle, $\theta$:
      degree (°)

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