Rare earth silicates as gain media for silicon photonics [Invited]

2014 ◽  
Vol 2 (3) ◽  
pp. A45 ◽  
Author(s):  
Hideo Isshiki ◽  
Fangli Jing ◽  
Takuya Sato ◽  
Takayuki Nakajima ◽  
Tadamasa Kimura
Keyword(s):  
Rare Earth ◽  
Silicon Photonics ◽  
Gain Media

Frequency-Domain Measurement of Spontaneous Emission Lifetime in Rare-Earth-Doped Gain Media

2017 ◽  
Author(s):  
Emir Salih Magden ◽  
Patrick T. Callahan ◽  
Nanxi Li ◽  
Katia Shtyrkova ◽  
Alfonso Ruocco ◽  
...  
Keyword(s):  
Rare Earth ◽  
Frequency Domain ◽  
Spontaneous Emission ◽  
Emission Lifetime ◽  
Rare Earth Doped ◽  
Gain Media

scholarly journals Frequency Domain Spectroscopy in Rare-Earth-Doped Gain Media

2018 ◽  
Vol 24 (5) ◽  
pp. 1-10 ◽  
Author(s):  
Emir Salih Magden ◽  
Patrick Callahan ◽  
Nanxi Li ◽  
Jonathan D. B. Bradley ◽  
Neetesh Singh ◽  
...  
Keyword(s):  
Rare Earth ◽  
Frequency Domain ◽  
Rare Earth Doped ◽  
Gain Media

scholarly journals Ultrafast laser plasma assisted rare-earth doping for silicon photonics

2016 ◽  
Author(s):  
Gin Jose ◽  
Jayakrishnan Chandrappan ◽  
Suraya Ahmad Kamil ◽  
Matthew Murray ◽  
Zsolt Zolnai ◽  
...  
Keyword(s):  
Rare Earth ◽  
Laser Plasma ◽  
Silicon Photonics ◽  
Ultrafast Laser ◽  
Rare Earth Doping

Lasing in Rare-Earth-Doped Semiconductors: Hopes and Facts

MRS Bulletin ◽  
1999 ◽  
Vol 24 (9) ◽  
pp. 27-32 ◽  
Author(s):  
T. Gregorkiewicz ◽  
J.M. Langer
Keyword(s):  
Rare Earth ◽  
Crystal Field ◽  
Silicon Photonics ◽  
Field Potential ◽  
Stimulated Emission ◽  
Emission Wavelength ◽  
Site Symmetry ◽  
Dipole Strength ◽  
Doped Glasses ◽  
Re Elements

Semiconductors doped with rare-earth (RE) elements have attracted a lot of attention as alternative materials for producing electrically pumpe d semiconductor lasers whose emission wavelength is very weakly dependent on temperature. This prospect is especially attractive in the case of indirect-gap Silicon, whose photonic applications as the material for light emitters still remain more of a hope than a reality. In view of a desirable emission wavelength at 1.5 μm, a lot of research has concentrated on Si:Er (see Coffa et al. for a recent review). It is generally recognized that doping with Er ions presents one of the most promising approaches to Silicon photonics. However, despiteintensive investigations, stimulated emission has not been conclusively demonstrated for Si.Er or for any other RE-doped semiconductor. This is in striking contrast to optical amplifiers and lasers based on various erbium-doped glasses. In this article, which builds on recent articles in MRS Bulletin on Silicon photonics, we will address the issues relevant to efficient light generation by semiconductors doped with RE elements in general, and specifically by Si:Er-based structures.The intraimpurity electronic structure of RE ions is dominate d by electron-electron and spin-orbit interactions within the 4f shell. In the case of Er3+, they produce separated J-multiplets with 4I15/2 and 4I13/2 as the ground and the lowest-lying excited states, respectively. Due to the effective Screening of 4f electrons by the outer electron Shells, the host has a very limited influence and changes only slightly the relative positions of the levels. Depending on a particular site symmetry, the even terms of the crystal field split the free-ion J-multiplets into the Stark components typically by several meV for the ground State. The energy-level diagram of an Er3+ ion in a cubic crystal field is shown in Figure 1, where the energy transfer paths relevant for Si:Er are also schematically indicated. The odd terms of the crystal field potential admix the states of opposite parity to the 4f11 configuration of the Er3+ ion, thereby introducing a certain degree of electric-dipole strength into the otherwise forbidden intra-4f-shell transitions. This effect enhance s slightly the magnetic-dipole strength of the 4I15/2 ↔ 4I13/2 transition and is host- and site-dependent. There-fore, Er-related center s of different microstructure can be fairly easily identified.

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