1. A laser cavity consists of two mirrors with reflectivity R1 = 100% and R2 = 70%. If the population inversion is 0.59x10^(17)/cm3 and the transition cross section is 100 x 10^(-20) cm2, calculate the length of the active %3D material. 1cm 2cm 4cm О 3 ст other 5cm

Q: R, Rz Rg Ry

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Norton Theorem

In the current circuit law, the Norton theorem (also known as the Mayer-Norton theorem) is a simplification that can be applied to networks generated by a constant line of opposition, power sources, and current assets. In two network terminals, it can be switched on with a current supply and single resistor respectively.