erbium


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erbium

 (Er) [er´be-um]
a chemical element, atomic number 68, atomic weight 167.26. (See Appendix 6.)

er·bi·um (Er),

(er'bē-ŭm),
A rare earth (lanthanide) element, atomic no. 68, atomic wt. 167.26.
[from Ytterby, a village in Sweden]

erbium

/er·bi·um/ (Er) (er´be-um) chemical element (see Table of Elements ), at. no. 68.

erbium (Er)

[ur′bē·əm]
Etymology: Ytterby, Sweden
a metallic rare earth element. Its atomic number is 68; its atomic mass is 167.26.

er·bi·um

(Er) (ĕr'bē-ŭm)
A rare earth (lanthanide) element, atomic no. 68, atomic wt. 167.26.
[from Ytterby, a village in Sweden]

er·bi·um

(Er) (ĕr'bē-ŭm)
A rare earth element.
[from Ytterby, a village in Sweden]

erbium

a chemical element, atomic number 68, atomic weight 167.26, symbol Er. See Table 6.
References in periodicals archive ?
In 980 nm laser usage case, erbium excite to higher energy state requires less energy than in the case of 1480 nm laser, and at the same laser power, the use of 980 nm wavelength g will lead to greater gain then with 1480 nm.
If the EDFA fiber is longer than the optimal value then erbium inversion level at the end of the EDF will be less than 50 % and fiber will start to absorb the signal.
While erbium's importance is well-recognized, producing erbium materials of high quality has been challenging, Ning says.
The standard approach is to introduce erbium as a dopant into various host materials, such as silicon oxide, silicon, and many other crystals and glasses.
One big problem has been that we have not been able to introduce enough erbium atoms into crystals and glasses without degrading optical quality, because too many of these kinds of dopants would cluster, which lowers the optical quality," he says.
What is unique about the new erbium material synthesized by Ning's group is that erbium is no longer randomly introduced as a dopant.
Increasing the number of erbium atoms provides more optical activity to produce stronger lighting.
In addition, since erbium atoms are organized in a periodic array, they do not cluster in this new compound.
Like many scientific discoveries, the synthesis of this new erbium material was made somewhat by accident.
Similar to what other researchers are doing, we were originally trying to dope erbium into silicon nanowires.
Freelance chef Sylvia Johnson-Dean, 57, had a full face treatment with the Erbium Yag laser last year.