Could you tell me a bit more about you lens calculation in english? I have a good set up using a pos and a neg achromat. May be similar to your calcs...I use Olive2 and Zemax. I have a project that invovles a parabolic diode array with one pair of focus lenses.....looks good in the program...real life will be the test. This way the polorisation is one way and can be combined with other red wavelengths. It is TEC cooled as well...can hold 60 diodes in a 4.95" diameter array.
You are the only one that can make your dreams come true....and the only one that can stop them...A.M. Dietrich