Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 53305-53318 |
| Seitenumfang | 14 |
| Fachzeitschrift | Optics express |
| Jahrgang | 33 |
| Ausgabenummer | 25 |
| Publikationsstatus | Veröffentlicht - 10 Dez. 2025 |
Abstract
Understanding the gain dynamics of amplification in rare-earth-doped silica glass fibers is crucial for developing sophisticated low-noise amplifiers and frequency combs. Recent and ongoing research efforts in these areas have specifically targeted the spectral region around 2 µm and the use of thulium-doped silica glass fibers as a broadband, power-scalable gain medium. We present a comprehensive characterization of the transfer functions of thulium ions in silica glass for emission in the spectral 2 µm region, including the magnitude and phase information. We investigated the most widespread pumping schemes: in-band pumping at 1550 nm, as well as out-of-band pumping at 790 nm. A semi-analytical model and a numerical model are developed to describe the complex energy level system of thulium ions and their associated ion-ion interactions, providing deeper insight into the influence of various parameters on the transfer functions of thulium ions in silica glass. The presented results of the transfer functions support the choice of fiber amplifier geometries and electronics to optimize noise performance.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Atom- und Molekularphysik sowie Optik
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in: Optics express, Jahrgang 33, Nr. 25, 10.12.2025, S. 53305-53318.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Gain dynamics in thulium-doped fiber amplifiers
AU - Schuhbauer, Benedikt
AU - Haxsen, Frithjof
AU - Morgner, Uwe
AU - Neumann, Jörg
AU - Kracht, Dietmar
N1 - Publisher Copyright: © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
PY - 2025/12/10
Y1 - 2025/12/10
N2 - Understanding the gain dynamics of amplification in rare-earth-doped silica glass fibers is crucial for developing sophisticated low-noise amplifiers and frequency combs. Recent and ongoing research efforts in these areas have specifically targeted the spectral region around 2 µm and the use of thulium-doped silica glass fibers as a broadband, power-scalable gain medium. We present a comprehensive characterization of the transfer functions of thulium ions in silica glass for emission in the spectral 2 µm region, including the magnitude and phase information. We investigated the most widespread pumping schemes: in-band pumping at 1550 nm, as well as out-of-band pumping at 790 nm. A semi-analytical model and a numerical model are developed to describe the complex energy level system of thulium ions and their associated ion-ion interactions, providing deeper insight into the influence of various parameters on the transfer functions of thulium ions in silica glass. The presented results of the transfer functions support the choice of fiber amplifier geometries and electronics to optimize noise performance.
AB - Understanding the gain dynamics of amplification in rare-earth-doped silica glass fibers is crucial for developing sophisticated low-noise amplifiers and frequency combs. Recent and ongoing research efforts in these areas have specifically targeted the spectral region around 2 µm and the use of thulium-doped silica glass fibers as a broadband, power-scalable gain medium. We present a comprehensive characterization of the transfer functions of thulium ions in silica glass for emission in the spectral 2 µm region, including the magnitude and phase information. We investigated the most widespread pumping schemes: in-band pumping at 1550 nm, as well as out-of-band pumping at 790 nm. A semi-analytical model and a numerical model are developed to describe the complex energy level system of thulium ions and their associated ion-ion interactions, providing deeper insight into the influence of various parameters on the transfer functions of thulium ions in silica glass. The presented results of the transfer functions support the choice of fiber amplifier geometries and electronics to optimize noise performance.
UR - http://www.scopus.com/inward/record.url?scp=105024699676&partnerID=8YFLogxK
U2 - 10.1364/OE.581257
DO - 10.1364/OE.581257
M3 - Article
C2 - 41414488
AN - SCOPUS:105024699676
VL - 33
SP - 53305
EP - 53318
JO - Optics express
JF - Optics express
SN - 1094-4087
IS - 25
ER -