12mm Copper Modules

V5 12mm Copper Modules for 3.8mm, 5.6mm and 9mm laser diodes

High quality 99.9% Pure C1100 grade Copper Modules presion machined with +/-0.01mm tolerances.

 Machined by a certified manufacturer which comes at a cost of about 3X what knock off "so called copper" modules from asian suppliers cost. There are lots of low grade cheap Axiz standard style modules coming from asian suppliers that can have detrimental effects to the lasers operation. Lower thermal efficiency of diode modules using low grade copper can cause fast degredation leading to premature diode failures. Lower grade copper becomes very brittle where it is thinnest. Magnify an image of the lens threading on low grade copper modules you will see the threads are not perfectly clean and have burs and chips in them. When a lens is threaded in and out particles flake off the threading and contaminate the module housing. These particles can find their way to the diode window and damage, destroy or for capless diodes get right on the dye causing fast degradation of the laser. Lower grade copper can be identified by looking at the threads, rounded or square edges or even the flat surfaces. Pure copper will be visibly smooth but if there are pits or chips under magnification those are lower grade copper and dangerous for your diode. Another good test of the quality of a copper module is to thread a lens in and out of your module several times then tap the module on a white sheet of paper and see if any particles fall out and land on the white background.

 For our solid thermal back halfs extra machining cuts to get a raised seat to make precise pressured contact with the back of the 9mm diodes for optimal thermal extraction into the module is essential for proper operation of the higher power 9mm diode. This is a hard cut as it requires a special cutting tool that can go at an angle around the threading in the back half. If the solid back half you are using is just flat it will not make proper contact with the back of the diode since the 9mm diode presses in just past flush to ensure proper seating and side thermal contact with the laser diode.

 Waiting on new stock of 12mm Copper Full Length Back halfs. Added option for a Brass Full Length Hollow in the meantime which has the same dimentions of the copper version if a hollow back half is needed.

 Precision machined with a +/-0.01mm tolerances using C1100 grade copper which is the highest grade of copper at 99.9% pure. 

These modules were originally designed as a cooperative effort by a forum community to deal with tolerance issues of clones of the original Axiz designed 12mmX30mm plated brass modules being sold at the time. 

These units had very poor tolerances with variations for the outer diameter as extreme as 11.80mm to 12.10mm. Most heastinks at the time were just made oversize to accommodate these variations.

 With the availability of the new generation higher power laser diodes they were willfully inadequate to be able to manage the amounts of waste heat these diodes were generating.

If the module is too small there will be poor thermal contact which can cause the laser to overheat and die or run hot and degrade at an accelerated rate. 

Thermal transfer is very important and having high quality copper and good tolerances is very important to the proper operation of high power laser diodes.