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.