-------- In message <[email protected]>, Attila Kinali writes: >On Sat, 29 Feb 2020 13:44:59 -0500
>But, there is not much we can do about absorption/desorption. Actually, there are things you can do, but they are very expensive. One of the early paths of experiments with optic fibers were to replace the absorbed hydrogen with deuterium which is slightly larger, in order to move the OH- absorption peak away from the 1.3 micrometer band. (Bake at 1000°C in a D2 atmosphere for a couple of hours). Stuffing bigger atoms into the gaps that way will reduce the opportunities for other atoms to squeeze in. If you were *really* serious about it, you would start out growing your quartz from monoisotopic silicon and oxygen, picking the smaller silicon (28) and larger oxygen (18) in order to reduce the size of the gaps to begin with. It will probably also do wonders for your Q that all bonds are identical. >The diameter of the blank has to be scaled with its thickness, in >order not to compromise the f*Q product. Which in turn makes it >a bit problematic in terms of packaging, but nothing unsolvable. Isn't that where "whispering gallery" modes come into the picture ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
