Any toy is OK that keeps the baby at play )))
New (old) project that I want to bring to life. Maybe pure 637nm, maybe a mix of 650 and 637nm... with TEC cooling, 3,8x3,8mm output beam, etc
The first stage - modeling and search for the optimal arrangement of elements, he-he
And do not tell me that this is the same as the 4x overloaded P73 mitsu build, it's a single-mode baby