Fantastic, thanks so much to all of you! I kind of figured that 488nm would be unworkable; that's all right, we can make do with just 532. I found some 532nm laser modules that look good on the website you guys recommended (FastTech) and will definitely order them.
Thank you for the tip about...
Hi,
I am not a laser expert/hobbyist, but for a research project it turns out I will need need a steady source of inexpensive ($20-ish or less) and reliable <5mW 488 and/or 532 nm laser diodes (as close to 5mW as possible). I have tried purchasing several from Amazon, Digikey and other sites...