Introduction: How to Make a Burning 1-2W 445nm Blue Laser

About: "If opportunity doesn’t knock, build a door."
In this Instructable I will show you how to make a burning blue laser. This laser outputs 1-2W. At this power it can blind you instantly! If this is your first laser project you are in the wrong place, please find another Instructable of a lower power laser. Never point or aim this laser at; people, animals, airplanes, and reflective surfaces. ALWAYS where 445nm rated safety goggles. I recommend >OD+4.

That said I hope you find this Instructable easy and learn something about lasers.

Here is a video of the laser working:


Step 1: Parts List and Constructing Circuit

For this laser you will need...

1x M140 Laser Diode   :     Found Here

1x Aixiz Module (not needed if you buy from above link)     :     Found Here

1x 445nm Collimating Lens    :    Found Here


1x LM350

1x 100 OHM Pot

1x Standard Diode

1x 10uF capacitor

1x Perfboard

1x 1 Ohm 5W Resistor

1x Heatsink for LM350

1x Heatsink for Laser Diode      :       Found Here

Some switches or connectors (optional)

Once you get all of these parts put them together based on the schematic below.

Step 2: Enjoy

Finally you can put the laser into a case and have fun. Remember the safety rules for all lasers.

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