ER

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Related to erbium: Erbium doped fiber amplifier

ER

The two-character ISO 3166 country code for ERITREA.

ER

1. ISO 3166-1 alpha-2 code for the State of Eritrea. This is the code used in international transactions to and from Eritrean bank accounts.

2. ISO 3166-2 geocode for Eritrea. This is used as an international standard for shipping to Eritrea. Each Eritrean province has its own code with the prefix "ER." For example, the code for the Province of Debub is ISO 3166-2:ER-DU.

Qualifying Widow(er)

The filing status available to a qualified taxpayer for two tax years following the year of the spouse's death. To qualify, the surviving spouse must have been entitled to file a joint return for the year of death, remain unmarried at the end of the current tax year, and pay over half the cost of maintaining his or her home, which was the principal residence the entire tax year of his or her dependent child (other than a foster child).
References in periodicals archive ?
Erbium materials can remedy the situation by converting two or more photons carrying small amounts of energy into one photon that is carrying a larger amount of energy.
Erbium materials also help absorb ultraviolet light from the sun and convert it into photons carrying small amounts of energy, which can then be more efficiently converted into electricity by silicon cells.
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.
Although the 1530-nm luminescence bands that correspond to the erbium transition [.
The erbium-doped samples showed an evident trend in improving their luminescence properties important for their active optical function (as widening of the FWHM and increasing the 1530 nm emission) with increasing concentrations of erbium in the samples.
Freelance chef Sylvia Johnson-Dean, 57, had a full face treatment with the Erbium Yag laser last year.
The clearance covers three additional wavelengths; green (532nm), Nd:YAG (1064nm) and the Erbium (2.
Clinical trials on Laser Industries' Erbium laser system have been conducted by Dr.
With the most comprehensive aesthetic laser product line on the market, protected by a broad patent portfolio, Laser Industries expects the Erbium laser to increase its existing market share by responding to the demand for faster outpatient services to treat younger patients with finer wrinkles.