how do you make a laser beam combiner?

im trying to combine a red and green to make yellow

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Do you mean a real yellow laser, or something that looks yellow ? Adding red and green lasers together will only give the appearance of yellow, which is fine if that's what you want. Combining lasers is very difficult if you want a precision result.

Steve
Jake Morton (author)  steveastrouk7 years ago
well i only want to make the yellow colour because its much cheaper than buying a yellow one. it also gives you the option to change between yellow, green and red. its going to be placed in a laser spirographg by the way
How tight do you actually want the beams ? What kind of power have you got to deal with.

Steve
Jake Morton (author)  steveastrouk7 years ago
ive been asking a guy who made the 7 colour laser optic machine and he told me i could find a beam splitter cube in a laser disk drive. but the thing i want to do is just make a yellow or orange dot at the end of the beam and nothing too fancy
Re-design7 years ago
After looking around I can see why you're trying to build your own. They are really proud of those things.<br /> <br /> See if the <a href="http://www.cnczone.com/forums/showthread.php?t=34458">answer this question</a> helps you any.<br />