How to use this tool
Check the units, enter your values, and run the tool. Results follow the assumptions and method below.
Calculation method
Approximate frequency linewidth
299792458*width/wavelength^2Narrow-band approximation Δν≈cΔλ/λ² forΔλ≪λ.
Narrow-band approximation Δν≈cΔλ/λ² forΔλ≪λ.
Enter your values and run the tool to see your result.
Check the units, enter your values, and run the tool. Results follow the assumptions and method below.
299792458*width/wavelength^2