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For those interested in 25 hours of brain food, here is a 25 video playlist of hour long lectures from MIT's Open Course Ware class, "Atomic and Optical Physics I." Enjoy! https://m.youtube.com/playlist?list=PLUl4u3cNGP62FPGcyFJkzhqq9c5cHCK32

Re: Spectra Physics Scientific 488nm SLM DECSL laser I'll probably message you a bit. I'll need some refreshing..I've been off the saddle for too long.

This is the type of material that brings me back to the forum and looking at the collective of parts that I haven't touched in months. Monday I'm buying a new pump diode and I'm going to stop making excuses and start experimenting again. Thank you.

The one positive note that I'd like to mention with these - visible parts. With IR based DPSS, it's all invisible pump source and IR identifier cards. With 444nm pumped Pr:YLF - it's visible light stimulating other visible light. Makes the alignment process a little easier when you're not...

I enjoy this thread. Fresh gas pron. I remember pulling in the ballpark of 12 lines I believe when I external-ed my whitelight. Kept the 5 initial blue lines, the 568, and the 647. Added 2-3 more blues, 496, 501, and two green lines. She was really cooking with oil that one. Just used an...

Eh...? What is this in reply to?

I definitely was not expecting this thread to be brought back up. Glad I could be the catalyst of this discussion.

The tunable is an Omni 532. I have three sources of 488nm. The single line (PSU malfunctioning), the ArKr (large to work with, taller than 532) and the 488nm OPSL that I got from Zach at SELEM. Not 100% on the magic behind OPSLs, so I was weary to use it as a guide and have that coupled...

Read pages 1-6 and 10-15. Terrific. Thanks for the info.

It's going to need to be aligned fully from scratch. I'll need to remove the OC and align the prism end, then add and align the OC. It wouldn't be *too hard* if I hadn't been so nooby when I first got it, started turning non-tuning knobs, jacked up the alignment, and turned just about all 6...

Has anyone tested these with external heating? I'd like to tap into what this diode can do at high temps, without the danger of running this at 5.5A. No need to overpower it if I can just cook it in a labby instead. If not, I'll roll the dice on my own. Simply felt like plugging the...

I know enough Hangul (Korean) to order food, ask the time, and far too many grammar rules. I can also read/speak it quite well, so if I need to learn a word or phrase on the fly, I can use one of my apps to get the word/phrase I need. Was learning in my free time from a friend that spoke...

Should be an interesting write up. I can't think of any tubes of mine needing a refurb. My HeNes are pretty happy, the HeCd IS refurbished. Had something like 10 hours on it when I got it...? My ions though, they need a little work. Reminds me of the tunable Ar that I still need to...

I honestly didn't realize this was from last year. Well, then yes, two birthdays haha Also yes, I have been away for some time now. All the work I was doing began catching up financially. Had to knock that off before I was actually in the hole. I also don't have a working PC. And mobile...

I always settle on REO being my favorite HeNe company, based solely on their "special snowflake" tendencies. Then posts like remind me of that "I don't want to follow society's rules" phase that SP went through. With their 107/27/25's especially. Nice thread bud! And thanks for the...

I can't even be mad with this necro post, considering the 1:365 timing, it makes a helluva birthday gift. Yes. The 609 line is a radiative transition line according pg.501 of Masamori Endo and Robert F. Walter's "Gas Lasers". This is the only reference to this line that I've found outside...

You can waste some else's time now.

Since I currently lack the words to articulate my current sadness. I'll leave this. I returned home from work today, like usual, and went to grab something off my dresser. I saw the following. I don't know if it's from one of the three room inspections we've had recently, or if had been...

Re: Fs: 5 NEW HOSTS ADDED TODAY 5/1/15 PM incoming for #2 and 4