Mirror transmission and pump strength in laser rate equations

[Umbra Lupis]

In my math class we were given an assignment to model lasers, we have been given equations, and terms have been somewhat defined, but I do not know what the following terms are when relating to a laser. Any help in defining them would be awesome!

What is:

Mirror Transmission,

Pump Strength?

Thanks for your time and any help you can provide!

PS:
For those interested the equations given were:

dn/dt = GnN - kn
dN/dt = -fN - GnN + P

Where n is the number of photons, N is the number of excited atoms, G > 0 is the
gain coefficient for stimulated emission, k > 0 is the decay rate due to loss of photons by mirror transmission, scattering, etc., f > 0 is the decay rate for spontaneous emission, and P is the pump strength.

 

[turin]

Mirror transmission is the probably the probability that a photon will exit the laser when it hits the mirror. Pump strength is probably the rate at which the pump excites the atoms. I am just using your equations to make these guesses.

 

[Redbelly98]

turin is correct. You can also think of mirror transmission as the percentage of power in an incident wave that is transmitted (vs. being reflected) by the mirror.

 

[Umbra Lupis]

Thanks guys!