Photonics Wavelength Converters

Wavelength/Frequency/Electron Volt/Wavenumber Converter

Just enter the wavelength in nanometers and the converter will return Frequency (THz), Energy (eV), and Wavenumber (cm-1)
Enter Wavelength: nm

Milliwatts/dBm Converter

Enter the power in mW or the power in dBm, and the converter will return the power in dBm or mW.
Power in mW
or
Power in dBm

Etalon Calculator

To calculate the FSR (in GHz) and Finesse of a solid etalon, please input the following parameters:
refractive index
thickness (mm)
surface reflectivity (%)
FSR =
Finesse =


Or, to find the thickness and reflectivity for a given FSR (in GHz) and Finesse, please input the following parameters:

refractive index
FSR (in GHz)
Finesse
Thickness (in mm) =
Reflectivity (%) =