Details
| Original language | English |
|---|---|
| Title of host publication | Fiber Lasers XVII |
| Subtitle of host publication | Technology and Systems |
| Editors | Liang Dong |
| Publisher | SPIE |
| ISBN (electronic) | 9781510632837 |
| Publication status | Published - 21 Feb 2020 |
| Externally published | Yes |
| Event | Fiber Lasers XVII: Technology and Systems 2020 - San Francisco, United States Duration: 3 Feb 2020 → 6 Feb 2020 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 11260 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
The output power of fiber-based single-frequency amplifiers, e.g. for gravitational wave detectors, is typically limited by nonlinear effects (e.g. stimulated Brillouin scattering). In general, to reduce the impact of nonlinearities, the mode area of the fiber core is enlarged. Chirally-coupled-core (3C®) fibers have been specifically designed to enable single-mode operation with a large mode area core. 3C®-fibers consist of a step-index fiber structure, whose signal core is additionally chirally surrounded by one ore more satellite cores. Because of the phase matching and the helical geometry, the higher order modes are pulled out of the signal core, which enables a high-purity modal content in the core. We present a robust and monolithic fiber amplifier based on an ytterbium-doped 3C®-fiber in combination with commercially available standard fibers. For the realization of such a monolithic system, a mode field adapter (MFA) was designed and installed between a standard polarization-maintaining fiber and an active 3C®-fiber for the first time. The MFA was tested regarding the guided modal content by means of a S2-system. Overall, the fiber amplifier achieves a polarization extinction ratio of 17.6 dB and an optical output power of 100.1W in a linearly polarized TEM00-mode. To our knowledge, the fundamental mode content of 98.9% is the highest TEM00-mode content of fiber amplifiers reported at this power level. This work emphasizes the high potential of fiber amplifiers based on 3C®-fibers as laser sources for the next generation of gravitational wave detectors and demonstrates that compact and robust amplifiers can be realized using 3C®-fibers.
Keywords
- Chirally-coupled-core fiber, Gravitational waves, Monolithic fiber amplifier, Single-frequency
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
Fiber Lasers XVII: Technology and Systems. ed. / Liang Dong. SPIE, 2020. 112601C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11260).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Single-frequency chirally-coupled-core all-fiber amplifier with 100W in a linearly-polarized TEM00-mode
AU - Hochheim, Sven
AU - Steinke, Michael
AU - Wessels, Peter
AU - De Varona, Omar
AU - Koponen, Joona
AU - Lowder, Tyson
AU - Novotny, Steffen
AU - Neumann, Jörg
AU - Kracht, DIetmar
PY - 2020/2/21
Y1 - 2020/2/21
N2 - The output power of fiber-based single-frequency amplifiers, e.g. for gravitational wave detectors, is typically limited by nonlinear effects (e.g. stimulated Brillouin scattering). In general, to reduce the impact of nonlinearities, the mode area of the fiber core is enlarged. Chirally-coupled-core (3C®) fibers have been specifically designed to enable single-mode operation with a large mode area core. 3C®-fibers consist of a step-index fiber structure, whose signal core is additionally chirally surrounded by one ore more satellite cores. Because of the phase matching and the helical geometry, the higher order modes are pulled out of the signal core, which enables a high-purity modal content in the core. We present a robust and monolithic fiber amplifier based on an ytterbium-doped 3C®-fiber in combination with commercially available standard fibers. For the realization of such a monolithic system, a mode field adapter (MFA) was designed and installed between a standard polarization-maintaining fiber and an active 3C®-fiber for the first time. The MFA was tested regarding the guided modal content by means of a S2-system. Overall, the fiber amplifier achieves a polarization extinction ratio of 17.6 dB and an optical output power of 100.1W in a linearly polarized TEM00-mode. To our knowledge, the fundamental mode content of 98.9% is the highest TEM00-mode content of fiber amplifiers reported at this power level. This work emphasizes the high potential of fiber amplifiers based on 3C®-fibers as laser sources for the next generation of gravitational wave detectors and demonstrates that compact and robust amplifiers can be realized using 3C®-fibers.
AB - The output power of fiber-based single-frequency amplifiers, e.g. for gravitational wave detectors, is typically limited by nonlinear effects (e.g. stimulated Brillouin scattering). In general, to reduce the impact of nonlinearities, the mode area of the fiber core is enlarged. Chirally-coupled-core (3C®) fibers have been specifically designed to enable single-mode operation with a large mode area core. 3C®-fibers consist of a step-index fiber structure, whose signal core is additionally chirally surrounded by one ore more satellite cores. Because of the phase matching and the helical geometry, the higher order modes are pulled out of the signal core, which enables a high-purity modal content in the core. We present a robust and monolithic fiber amplifier based on an ytterbium-doped 3C®-fiber in combination with commercially available standard fibers. For the realization of such a monolithic system, a mode field adapter (MFA) was designed and installed between a standard polarization-maintaining fiber and an active 3C®-fiber for the first time. The MFA was tested regarding the guided modal content by means of a S2-system. Overall, the fiber amplifier achieves a polarization extinction ratio of 17.6 dB and an optical output power of 100.1W in a linearly polarized TEM00-mode. To our knowledge, the fundamental mode content of 98.9% is the highest TEM00-mode content of fiber amplifiers reported at this power level. This work emphasizes the high potential of fiber amplifiers based on 3C®-fibers as laser sources for the next generation of gravitational wave detectors and demonstrates that compact and robust amplifiers can be realized using 3C®-fibers.
KW - Chirally-coupled-core fiber
KW - Gravitational waves
KW - Monolithic fiber amplifier
KW - Single-frequency
UR - http://www.scopus.com/inward/record.url?scp=85083742820&partnerID=8YFLogxK
U2 - 10.1117/12.2542192
DO - 10.1117/12.2542192
M3 - Conference contribution
AN - SCOPUS:85083742820
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Fiber Lasers XVII
A2 - Dong, Liang
PB - SPIE
T2 - Fiber Lasers XVII: Technology and Systems 2020
Y2 - 3 February 2020 through 6 February 2020
ER -