It seems no concrete solution yet to be shared....I have been trying to collimate it like a 80nm pump diode to get at the square beam....then final focus. Only thing is I can't get my FAC's close enough to the die to get a proper setting or result. Off to look a cylindricals....maybe the way to go. I have just now begun experiments and if anyone knows anything that will work nice in a labby...they are not coming forth. Time and testing will result the right choice. I will share my results when a good solution is proven. That way we all benefit.
You are the only one that can make your dreams come true....and the only one that can stop them...A.M. Dietrich