Thanks for the comments everyone!
The lasers are indeed beautiful; it was only obligatory to take pictures and share them with you guys
Here's some more information about the HeNe lasers:
632nm: 15mW Melles Griot. Dot has small rings around it but is otherwise very clean. Bought it used on Ebay.
612nm: 5mW Meredith Instruments. I made Chad an offer for one of the orange HeNes on his website and he counter-offered with a used tube. I figured that this would be the only chance I would ever have to get an orange HeNe, so I made the purchase. I couldn't have been happier. The laser is actually Tem01, so it has a little dark spot in the middle of the dot, but it's virtually unnoticeable. However, the divergence is a little worse than its companions.
594nm: 4mW Meredith Instruments. Dot is in perfect shape. Bought it used on Ebay.
543nm: 2mW Melles Griot. There is a small ghost dot next to the main dot, but the main dot is still very clean. Bought it used on Ebay.
Now which of the four lasers is my favorite? Actually, all of them. There's something about the HeNe colors that make them softer and less harsh than DPSS or diode equivalents. And when all four are next to each other, it's a truly spectacular sight.
I must apologize for the poor quality of the photos. Not only did I not have my main camera, but I didn't even have a tripod! Hence the graininess of each photo. Although I do have to say that the colors are pretty well represented (minus 445nm and 405nm, which are pretty off). The picture best capturing the color is the close-up of the dots. The green is paler/more limey in person, the yellow is more amber, the orange is pretty much spot on, and the red is a tad more orange. It's hard to describe and imagine the actual color without seeing it!
