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Hello all, This is my second laser build. I am fairly new to lasers, but not new to electronics and other dangerous diy devices.
Anyway, I have a 2w m140 diode at 445 nm running off an x-drive powered by a 2 cell lipo pack. At first it was able to light paper on fire and was intensely bright even with glasses. Soon, however, it would start intensely bright but grow dimmer than a flashlight. the diode is fine, as it was well heat sinked. when testing current draw however, it only drew about 850 mA. I retried with fresh cells and even a fixed power supply to the driver but it would always start bright but grow dim. Any ideas as to what might be the cause?
Thank you for the help, I wont screw with the laser anymore until I get some more experienced feedback.
Anyway, I have a 2w m140 diode at 445 nm running off an x-drive powered by a 2 cell lipo pack. At first it was able to light paper on fire and was intensely bright even with glasses. Soon, however, it would start intensely bright but grow dimmer than a flashlight. the diode is fine, as it was well heat sinked. when testing current draw however, it only drew about 850 mA. I retried with fresh cells and even a fixed power supply to the driver but it would always start bright but grow dim. Any ideas as to what might be the cause?
Thank you for the help, I wont screw with the laser anymore until I get some more experienced feedback.