4 Watts! That is a ridiculous amount of power for a project like this. No wonder the screen is so bright! For those of you who want another point of comparison

4 Watts! That is a ridiculous amount of power for a project like this. No wonder the screen is so bright! For those of you who want another point of comparison for how powerful this laser is, advanced LIGO detected gravitational waves for the first time in 2015 with an average laser power of only 23W[0] (though we use a lot of tricks to boost the power of the beam, like Fabry-Perot cavities in the detector arms). [0] https://www.advancedligo.mit.edu/aug_2016_news.html https://www.advancedligo.mit.edu/aug_2016_news.html