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Liekki Corporation
Sorronrinne 9
FI-08500 Lohja, Finland
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+358 19 357 391 |
| Fax: |
+358 19 357 3949 |
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liekki liekki.com |
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| Home >>
News and events >>
Press releases >>
Press Release May 18, 2006
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LIEKKI INTRODUCES HIGH EFFICIENCY, LARGE-MODE-AREA (LMA) ERBIUM FIBER FAMILY
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Liekki Press Release
May 18, 2006
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LOHJA, May 18, 2006 – Liekki, a leading supplier of highly doped optical fibers, has developed a new large-mode-area erbium double clad fiber.
Liekki blazes new ground with a highly-doped erbium double clad (Er-DC), large-mode-area (LMA) fiber Er60-20/125DC. This fiber features high erbium concentration for efficient absorption, large 20μm core with low NA of 0.07 supporting good beam quality, and 125μm octagonal-shaped cladding for ease of use. The fiber demonstrates >30% slope efficiency with 980nm pumping with efficient lasing bandwidth extending up to 1.6μm.
Mikko Söderlund, Fiber Product Manager, says “Er60-20/125DC clearly demonstrates the capabilities and quality of the DND technology – this fiber features high concentration, large core/clad ratio, low clustering and low background losses, a combination which is unreachable with conventional processes. It opens up completely new possibilites in the eye-safe wavelength region. We are excited about this first release of the Er-DC product family and look forward to further leverage and develop this core platform into other core/clad ratios and variants like polarization maintaining and all-glass fibers, following our customer’s requirements”.
Er60-20/125DC opens many applications in the 1.5-1.6μm region:
- Eye-safe fiber lasers and amplifiers
- Military and commercial lidar
- Single frequency fiber lasers
- High peak power amplifiers
- Ultra-short pulse amplifiers
- Industrial machining
- Medical imaging
The direct Er-doping approach avoids some of the commonly known trade-off’s of Er:Yb co-doped fibers like poor/unrepeatable efficiency, high core NA and spurious lasing at 1μm. The fiber can be pumped either with 980nm or 1480nm. Liekki also provides 6 x 1:1 pump combiner for this fiber.
About Liekki Corporation
Liekki designs, manufactures and markets specialty optical fibers and fiber subassemblies (optical engines) for fiber amplifiers and lasers using its unique and proprietary Direct Nanoparticle Deposition (DND) technology. DND makes it possible to produce state-of-the-art highly doped fibers that minimize required fiber length, have large core-to-clad ratios, and exhibit low photodarkening, flat refractive index profile, high efficiency and reduced nonlinear effects. Liekki fibers also have very good usability in terms of splicing properties, temperature and bending characteristics. Liekki products are used in applications such as high power fiber lasers for industrial manufacturing and processing, military and aerospace, medical and scientific, and telecom sectors.
Direct Nanoparticle Deposition (DND) is a new, innovative nanoparticle process invented, developed and commercialized by Liekki, for a wide range of industrial applications. Liekki has licensed DND to industrial customers for non-optical applications and will continue to do so.
Liekki is headquartered in Lohja, Finland. Liekki products are available globally through Thorlabs (www.thorlabs.com). Liekki direct sales serves North America, Europe and Asia, supported by our representatives FT Okura (Japan), IKG Corporation (Japan), Apollo Electronics Co. Ltd. (China), and Connet Fiber Optics Co., Ltd. (China). For further information, please visit our website at www.liekki.com.
For more information, please contact:
Liekki Corporation
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liekki.com