This window helps translating between peak power, pulse energy and average cw power of pulse trains. 

The calculations in the first section are related to a single gaussian, sech^2 or rectangular pulse. Pulse duration, peak power and pulse energy are directly related and by entering two of these quantities, the third is calculated. 
The relation is: 

• pulse_energy = FWHM_pulseduration * peak_power * shape_factor 

with: 

• shape_factor = 1 for rectangular pulses 
• shape_factor = sqrt(Pi/4/ln(2)) for gaussian pulses 
• shape_factor = 1/ln(1+sqrt(2)) for sech^2 pulses

In the second section properties of a pulse train, consisting of the above defined pulses, are calculated. 
The following relations apply: 

• repetition_rate = 1 /period 
• duty_cycle = FWHM_pulseduration / period 
• average_power = pulse_energy / period