So one thing I wonder - if you loose 30% of the energy with every mirror, is it really necessary to use a dozen mirrors between the laser and the waver? Gettin

So one thing I wonder - if you loose 30% of the energy with every mirror, is it really necessary to use a dozen mirrors between the laser and the waver? Getting rid of two mirrors would double the energy at waver, removing 6 mirrors increases it by a factor of ten.