Recent content by drwho9437

Okay I went in and measured the laser at my university, please see my edit above.

If you search ebay I have acquired a: "NEW COHERENT FIBER COUPLD LASER DIODE 830 nm 750 mW" It is a pigtailed laser diode, originally it was terminated with an ST jack but I cut the fiber when the end got messed up doing cutting experiments. Although it is NIR you can see the spot when it is...

Typically a CO2 engraver is used for this task. I was hacking a inkjet printer for the task but I think the control in the paper feed direction isn't good enough. I may just give up on the idea. If anyone wants a coherent 830 nm pigtailed fiber laser (original spec 750 mW) I don't think I am...

Kapton does not burn it just turns to ash. From the limited data I have found the fundamental absorbtion edge might be at around 480nm. I can cut it with a 50 um pigtailed fiber laser at 830 nm outputting about 0.75W, however the absorption is perhaps 100 times less at this wavelength, meaning...

Using the typical 445 pulled from the Casio and the AiziZ lens or something similar does anyone know how small a spot size is achievable (single lens). Baring that does anyone know a cheap collimation/focus long working distance solution? I am interested in cutting small holes in kapton.