Details
| Original language | English |
|---|---|
| Title of host publication | Specialty Optical Fibres |
| Editors | Kyriacos Kalli, Alexis Mendez, Pavel Peterka |
| Publisher | SPIE |
| ISBN (electronic) | 9781510662667 |
| Publication status | E-pub ahead of print - 30 May 2023 |
| Event | Specialty Optical Fibres 2023 - Prague, Czech Republic Duration: 24 Apr 2023 → 28 Apr 2023 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 12573 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
Fiber-based laser systems enable high output power in combination with diffraction limited beam quality. Their output power is generally limited by the onset of nonlinear effects. The chirally coupled core (CCC) fiber provides a large mode field diameter while also suppressing higher-order-modes. This is needed to further increase a laser’s output power and maintaining single-mode operation. However, the integration of specialty fibers in an all-fiber laser setup is in most cases not possible because suitable fiber components are not available. We report on the development of a cladding light stripper and a signal-pump combiner with integrated 34/250-µm CCC fibers which allow for the development of spliceless all-fiber amplifier systems. The cladding light stripper is manufactured by structuring the CCC-fiber’s cladding using a CO2-laser to interrupt pump light guiding within the cladding. The cladding light stripper enables a stripping efficiency of 19 dB and was tested up to a stripped optical power of 100 W, which is sufficient to enable kW-class amplifier systems. The signal-pump combiner relies on a side-pumped design with four pump input fibers. Its characterization reveals a pump-to-signal fiber coupling efficiency of 90% and a signal-to-pump isolation of 30 dB. Component stability was tested at a pump input power of 500 W. An S2-measurement confirmed that the spatial mode content of the signal light propagating through the CCC-fiber-based signal-pump combiner remains unaffected. Furthermore, a signal-pump combiner was subjected to temperature cycles between -5 and 85 °C over a time period of >1000 h and showed no degradation.
Keywords
- chirally coupled core, Fiber components, laser amplifier, signal-pump combiner, specialty fiber
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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- BibTeX
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Specialty Optical Fibres. ed. / Kyriacos Kalli; Alexis Mendez; Pavel Peterka. SPIE, 2023. 125730E (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12573).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Fiber components based on large-mode area chirally coupled core specialty fibers for all-fiber laser systems
AU - Brockmüller, Eike
AU - Wellmann, Felix
AU - Kimmelma, Ossi
AU - Lowder, Tyson
AU - Novotny, Steffen
AU - Neumann, Jörg
AU - Kracht, Dietmar
N1 - Publisher Copyright: © 2023 SPIE.
PY - 2023/5/30
Y1 - 2023/5/30
N2 - Fiber-based laser systems enable high output power in combination with diffraction limited beam quality. Their output power is generally limited by the onset of nonlinear effects. The chirally coupled core (CCC) fiber provides a large mode field diameter while also suppressing higher-order-modes. This is needed to further increase a laser’s output power and maintaining single-mode operation. However, the integration of specialty fibers in an all-fiber laser setup is in most cases not possible because suitable fiber components are not available. We report on the development of a cladding light stripper and a signal-pump combiner with integrated 34/250-µm CCC fibers which allow for the development of spliceless all-fiber amplifier systems. The cladding light stripper is manufactured by structuring the CCC-fiber’s cladding using a CO2-laser to interrupt pump light guiding within the cladding. The cladding light stripper enables a stripping efficiency of 19 dB and was tested up to a stripped optical power of 100 W, which is sufficient to enable kW-class amplifier systems. The signal-pump combiner relies on a side-pumped design with four pump input fibers. Its characterization reveals a pump-to-signal fiber coupling efficiency of 90% and a signal-to-pump isolation of 30 dB. Component stability was tested at a pump input power of 500 W. An S2-measurement confirmed that the spatial mode content of the signal light propagating through the CCC-fiber-based signal-pump combiner remains unaffected. Furthermore, a signal-pump combiner was subjected to temperature cycles between -5 and 85 °C over a time period of >1000 h and showed no degradation.
AB - Fiber-based laser systems enable high output power in combination with diffraction limited beam quality. Their output power is generally limited by the onset of nonlinear effects. The chirally coupled core (CCC) fiber provides a large mode field diameter while also suppressing higher-order-modes. This is needed to further increase a laser’s output power and maintaining single-mode operation. However, the integration of specialty fibers in an all-fiber laser setup is in most cases not possible because suitable fiber components are not available. We report on the development of a cladding light stripper and a signal-pump combiner with integrated 34/250-µm CCC fibers which allow for the development of spliceless all-fiber amplifier systems. The cladding light stripper is manufactured by structuring the CCC-fiber’s cladding using a CO2-laser to interrupt pump light guiding within the cladding. The cladding light stripper enables a stripping efficiency of 19 dB and was tested up to a stripped optical power of 100 W, which is sufficient to enable kW-class amplifier systems. The signal-pump combiner relies on a side-pumped design with four pump input fibers. Its characterization reveals a pump-to-signal fiber coupling efficiency of 90% and a signal-to-pump isolation of 30 dB. Component stability was tested at a pump input power of 500 W. An S2-measurement confirmed that the spatial mode content of the signal light propagating through the CCC-fiber-based signal-pump combiner remains unaffected. Furthermore, a signal-pump combiner was subjected to temperature cycles between -5 and 85 °C over a time period of >1000 h and showed no degradation.
KW - chirally coupled core
KW - Fiber components
KW - laser amplifier
KW - signal-pump combiner
KW - specialty fiber
UR - http://www.scopus.com/inward/record.url?scp=85170641545&partnerID=8YFLogxK
U2 - 10.1117/12.2665663
DO - 10.1117/12.2665663
M3 - Conference contribution
AN - SCOPUS:85170641545
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Specialty Optical Fibres
A2 - Kalli, Kyriacos
A2 - Mendez, Alexis
A2 - Peterka, Pavel
PB - SPIE
T2 - Specialty Optical Fibres 2023
Y2 - 24 April 2023 through 28 April 2023
ER -