I am taking this opportunity to tell you how happy we are with our new CL 606 series Cemarline lasers. We have been using your red diode lasers (CL 505 series) throughout our Radiotherapy department for over 15 years, and were so impressed with their stability and ease of adjustment that we specified Cemar lasers when we purchased four new Varian accelerators.
We decided to upgrade one of our treatment rooms with green lasers to better facilitate precise patient positioning for Stereotactic Radiosurgery treatments. In March 2007, we installed three CL 606 green lasers and we then performed a thorough adjustment procedure which positioned all of the crosshairs at the machine's iso-center. The green laser was substantially brighter than the red one and the line width of 0.5 mm or less at a distance of approximately 3 meters was perfect for our application.
We have found that the mechanical stability of the laser positioning system is without question, as we have not had to readjust the lasers once since installation. They are checked on a bi-monthly basis or as needed but we have found no drift at all.
I would like to congratulate you on a well designed and easy to use product.
Medical Physics Department
Montreal General Hospital, MUHC