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yeah. I concur. most people here wouldn't have an adapter to mount these to, but for the price, they're amazing at anything less than a few hundred dollars if they're in good shape. I know they used to use them on the S series lasers for use in the aerospace industry for precision alignment, but...

I have a 20x version. These are very high quality, far beyond typical hobby parts. these are over a thousand dollars new iirc. they're not cheap. and yes they are made to expand gas lasers fro interferometry and long distance sighting and so on. they're not made for cheap diode lasers generally...

if this is still available I might be interested. let me look up specs and dimensions and i'll get back to you

I honestly would buy this if I had the money and a place to put it... I definitely feel you on the speed bit too. A lot of these older lasers are getting to be pretty hard sells

I gotta agree. for the price they're a great scope-my friend has one. I personally still use a bunch of old dinosaur Tek stuff. I actually need to debug my old analog 100MHz 465B.... It has an occasional glitch that I need to look into, but it still works great otherwise. In the meantime I've...

sounds interesting

That's alot of extra work....I just put one next to the tube and used a pair of mirrors to put it on axis with the co2 beam. the one in the sight of the CO2 beam was on a slider, so I just slid it out of the way once i was ready to use it. simple. just have to make sure it's all on a rigid base...

A lot of professional CO2 lasers actually used a helium neon laser for a guide

Yes, they have a very high endurance now, and it's quite good for fast low power consumption memory. MRAM is interesting to me though, I'd like to see STT stuff come to fruition, but it needs alot of energy to operate. FRAM is still going to outlast the devices it's put int most likely by far...

SRAM is quite interesting to work with. most of mine are all 32K CDIPs. I used two in my 1802 build. though one is swappable to allow me to use an EPROM in it's place with a jumper change. I've not made a Z80 board. might be fun to look into sometime. I could probably grab a couple more chips...

Agreed, there are whole forums and clubs dedicated to stuff like this. I actually have one of the oldest vintage Z80 chips you can get in my chip collection. I always thought about making something with one, but I never have. I have an old arcade board that uses a Z80/V30 for the sound...

Yeah, it's technically possible, just exceptionally hard. Ruby by nature doesn't lase CW, and even when you can coax it to never stop lasing, the power still is kinda a pseudo pulse. It has to be cooled quite a bit to force enough depopulation of the upper states to keep any output going...

Corporate CO2 laser blends are a trade secret, and vary slightly. You won't find one just floating around, but your best bet would be to go to a gas outlet like airgas and ask. It won't be cheap though if you want something of reasonable purity. You can just use pure CO2, the lifespan just wont...

Yeah, which is unfortunate. I love the orange HeNe laser, but it never really took off. It's useful for spectral references and certain types of alignment, but the other HeNe lines generally do just as well. Yellow kinda supplanted it when it started to be made in bulk for much of it's uses and...

Yeah it’s pretty interesting because I have a one watt green genesis head and that is much more intense to see due to it being single mode and a brighter wavelength. It would probably be incredibly spectacular at night. The yellow three watt has a wider beam. so while the spot is intense, the...

It is. Yeah I saw that too. I don’t know why they say that... although in their defense LBO as far less susceptible to moisture than BBO

Yeah, we're honestly off topic. I'm finding lots of papers that say it is, and some manufacturers say yes, and a couple others list it as no. Scientifically speaking it should be. Whether it's enough for concern seems to be the issue of debate. I dunno what you've read but most of the makers...

<post removed> I'll look into it. I remember something about LBO being water sensitive, but not as much as BBO, I'll see what I can find. I'm finding lots of conflicting info. Also, I stand corrected on this one. My melles 561 does say it uses an LBO but does have dessicant. However digging...

It has an oxygen absorber in it. see above, I'm guessing you missed that. The result is it makes a low pressure system in the head so trying to open one is a bit of a pain, as it sucks itself shut. Edit: and yes it is an LBO according to the preliminary documentation I have from wayyyy back...

I’m pretty sure that it is an LBO. It’s cheap in flexible and has a high damage threshold with low birefringence, making it a good choice. In the original preliminary documentation I think that’s what it said they used, but I’d have to check. Edit: and yes LBO is mildly hygroscopic.