Erbium-doped low-dimensional Si films with different microstructures were grown by reactive magnetron sputtering on glass substrates by varying the deposition parameters. Their structure and chemical composition were studied by micro-Raman and Rutherford backscattering spectrometry, respectively. In this contribution the Erbium emission is studied as a function of nanocrystalline fraction and a...

A tunable comb filter based on a fiber loop mirror setup, which incorporates a piece of pumped erbium-ytterbium co-doped polarization maintaining fiber, is newly presented. It is accomplished by controlling the pump power or adjusting a polarization controller in the loop mirror, which results from the fact that the effective birefringence of the erbium-ytterbium co-doped polarization maintaini...

Silicon nanocrystals embedded in a silicon-rich silicon oxide matrix doped with Er ions have been fabricated by electron cyclotron resonance plasma-enhanced chemical vapor deposition. Indirect excitation of erbium photoluminescence via silicon nanocrystals has been investigated. Temperature quenching of the photoluminescence originating from the silicon nanocrystals and the erbium ions has been...

We demonstrate an optical unstable phase for a laser driven erbium ion ensemble. The transmitted light through erbium-doped yttrium orthosillicate crystal becomes dynamically when illuminated by strong continuous-wave laser. Transient net gain was recorded if the passes sample twice. experimental results are understood in framework of many-body system interacting with classical field, where ion...

We report the analysis of paired photon pulses arising from two cascading transitions in continuously pumped Erbium-doped YLiF$_4$ 1% and 0.01% crystals at 1.6 K. The dependence pulse peak intensity on squared number involved Erbium ions, between 10$^{11}$ 10$^{13}$, definitely identifies cooperative nature pulsed emissions, that are generated by subsequent, spontaneous formation coherent state...

This paper describes the design and implementation of an advanced photonics experiment aimed at the undergraduate students’ level. The experiment uses erbium-doped fiber to implement three functions through slight modifications of the setup. The functions are a broadband light source, a multi-wavelength optical amplifier, and a tunable fiber laser. As part of an Optical Communication Systems co...

We report trio upconversion laser action in Er:LiYF(4) with excitation at 1.55 microm resulting in cw emission at 0.55 microm to a temperature of 95 K and contrast its performance with earlier green erbium upconversion lasers.

We report on the first synthesis and structural characterizations of a new Erbium (Er) compound, the erbium chloride silicate (ECS, Er3Cl(SiO4)2) single crystal in a Si-ECS core-shell nanowire form. The Erconcentration in ECS at 1.6x10 22 cm −3 is three orders of magnitude higher than that of the Er-doped materials. Photoluminescence spectra at both low and room temperatures exhibit well separa...