Inventables: Find new materials. Homemade T.E.A. Lasers. By Nyle Steiner K7NS Oct 2007.
Upper picture: An ultraviolet beam from a T.E.A. laser is striking a piece of paper covered with highlight pen ink. Lower picture: An ultraviolet beam from a T.E.A. laser (partly visible on the far right) passes first through the bottle on the right (water with laundry whitener, blue glow) and then continues through the bottle on the left (water and highlight pen ink, green glow) until it strikes a piece of paper (covered with highlight pen ink, green spot). I used to tell people "There is no such thing a true home made laser. There is always a requirement for exotic parts that can only be obtained from a laser manufacturer, and - or there is the requirement to perform exotic high vacuum, glass blowing and gas mixing processes. This would defeat much of the satisfaction of building your own laser. " Mindsets online. Download or View the Design and Technology edition of Product News.
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