- Joined
- Mar 10, 2013
- Messages
- 2,918
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- 113
Hello members of LPF!
I've been scrounging around for a while now for more good gas, and finally have a few things to show off that are a bit rarer than the norm or unique, and wanted to share my find.
first up!
another working SL orange HeNe @ 612nm! This is a retired tube from Melles Griot's R&D dept. It's a 05-LOR-161, and is underspec, possibly a high mileage tube, or maybe the mirrors are just tweaked out of alignment, but for whatever reason it still works, but is outputting only 1.68mW. but hey....I got an orange!
I also found something very surprising....a like new single brewster tube! This was a rare find that suprised me, and it works flawlessly, however I don't have a mirror mount atm, so I can't show it lasing, but it lights nice and healthy. I've done some hand alignment and with a steady hand I can get red out of it for brief intervals, but for now, its just for display. (keeping the mirror in a sealed capsule, and a red rubber cover that came with it over the window to keep dust off) It is also a Melles Griot tube, with the model 05-LHB-580, which is a 5+mW tube and is of top quality, with an optically contacted brewster window, as opposed to a low-frit-soft-sealed version. making this a hard seal tube, and does not leak/out-gas on any timescale that matters.
I've also had this yellow 594.1nm from Meredeth for a while, but I'm going to add it as well, just to complete the 'rare wavelength' HeNe collection on the thread. Its output has grown a bit I think, but I havn't re-measured it at this time, but it was originally doing about 4.1mW
Thanks for looking! More to come as I have time and money! :beer:
I've been scrounging around for a while now for more good gas, and finally have a few things to show off that are a bit rarer than the norm or unique, and wanted to share my find.
first up!
another working SL orange HeNe @ 612nm! This is a retired tube from Melles Griot's R&D dept. It's a 05-LOR-161, and is underspec, possibly a high mileage tube, or maybe the mirrors are just tweaked out of alignment, but for whatever reason it still works, but is outputting only 1.68mW. but hey....I got an orange!
I also found something very surprising....a like new single brewster tube! This was a rare find that suprised me, and it works flawlessly, however I don't have a mirror mount atm, so I can't show it lasing, but it lights nice and healthy. I've done some hand alignment and with a steady hand I can get red out of it for brief intervals, but for now, its just for display. (keeping the mirror in a sealed capsule, and a red rubber cover that came with it over the window to keep dust off) It is also a Melles Griot tube, with the model 05-LHB-580, which is a 5+mW tube and is of top quality, with an optically contacted brewster window, as opposed to a low-frit-soft-sealed version. making this a hard seal tube, and does not leak/out-gas on any timescale that matters.
I've also had this yellow 594.1nm from Meredeth for a while, but I'm going to add it as well, just to complete the 'rare wavelength' HeNe collection on the thread. Its output has grown a bit I think, but I havn't re-measured it at this time, but it was originally doing about 4.1mW
Thanks for looking! More to come as I have time and money! :beer: