I have always been interested in the process of producing differing spectra of colors in fireworks. Some colors like a very deep blue are hard to produce and many people keep their formula secret! I think my interests in lasers is similar to my fascination with the pure bright colors in fiireworks using specific elements that produce color of a specific spectra in the flame.
I personally wasn't even aware of the amazing world of lasers and had no idea that handheld lasers had advanced to the point of having many new wavelengths as technology and research advanced into new diodes and DPSS colors. I thought only red 5mW lasers existed because that was all I had ever seen up until about 6 months ago!!
I happened to get an amazon gift card for a birthday present and after pondering what to purchase I discovered that there were several colors of lasers available like 405nm blue ray, 532nm green etc and I immediately became fascinated!
I then discovered LPF and began lurking here to read as much as I could before I purchased on amazon. Initially I was overly afraid of green because I had read about IR, and not knowing that it wasn't that big of a deal at lower mWs, I ordered a 100mW 650nm and a 10mW 405nm. Instead of the red laser they accidentally sent me a 30mW green. At first I was upset that I had received the wrong laser until I turned it on outdoors and was blown away by the easily visible green beam that sparkled in the night air. I had no idea even that a beam could be visible without fog, as I had only seen my little 5mW red if there was something thick in the air like smoke or fog. After doing a little more reading on LPF I realized my concerns about IR on a 30mW green wasn't as big of a deal especially since I was mostly using it outdoors.
After that I read more on here and joined a month or two later, and since then I have become very interested or obsessed for that matter with these amazing coherent beams of light and the complexity and process to produce specific wavelengths.
I am slowly learning, and there is a so much to discover for me. I hopefully will try building sometime soon in the future, but until them I am a bit of a collector and am trying to build a basic collection of some of the more common wavelengths to have a "complete set." I hope one day I will be able to enjoy 589nm, 593.5 and 473nm as well! :wave: