DIY 5mW+ 4.1V Red Homemade Stationary Laser, Fun Electronic Project, Cheap and Hacked Together скачать в хорошем качестве

DIY 5mW+ 4.1V Red Homemade Stationary Laser, Fun Electronic Project, Cheap and Hacked Together

Here, I've taken a cheap red laser diode and assembled a laser device out of it using various components and electronics. The laser diode has no descriptive output power range, so I decided to push it a little at 1.5A input using two regulated short-circuit paths for more power draw, a 2W/22Ohm current limiting ceramic resistor for the load, a 102K safety capacitor for switching protection against unwanted frequencies, and an adjustable LM317T chip for switching the device on and off. The output power is likely above 5mW. For the supplied power, I'm using 3PC 6.2W alkaline battery cells in parallel config, as well as a 12V fan for cooling. Since the battery pack and diode produces a bit of heat waste, I strapped a heat sink to the device for dissipation, at least before one of the batteries begins to leak with decreased capacity. As for the laser diode, the electromagnetic spectrum is 660nm-650nm and is insulated with aerogel across the diode leads and main board to manage thermal stability. I'm using a mixed solution of fluorescein doped surfactant (sodium decyl glucoside) for interesting scattering effects and polarization with a relative thickness.