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Does anyone in Australia have my lasers to sell please ? We have rather draconian laws here and I didn’t wish to run afoul of the law by purchasing overpowered items from overseas. Id like to do some optics experiments for parties and general nerdiness as well as look at setting up a laser...

Newbie here but looking to learn. I see there are many frequencies available but is it possible to have one laser and many frequencies through adapters? How can you multiply or divide the frequency and create many nm variations from a single light source ? I’ve got to do some research into a...