News

Nufern Enhances Erbium/Ytterbium Co-DopedDouble-Clad Fiber Line with PM Version - Higher power/energy output for new PM fiber laser applications

May 18, 2004

EAST GRANBY, CT - May 18, 2004 - Nufern, the largest independent manufacturer of fiber intensive fiber laser modules and specialty optical fibers, announced today a polarization maintaining (PM) Panda-style Erbium-Ytterbium (Er/Yb) co-doped, double-clad fiber for high power (energy) fiber lasers and optical amplifiers used in military, industrial, and medical applications.

Demonstrating high pump conversion efficiency and high power operation without efficiency roll off, Nufern’s PM-EYDF-18/250 fiber is designed for use not only for emerging industrial and medical applications, but also for the military at eye-safe wavelength (1550nm) for laser range finding and LIDAR.

Nufern’s PM-EYDF-18/250 offers two important attributes much needed for continuous wave and pulsed fiber lasers and amplifiers at 1550 nm. The PM Panda-style configuration enables the design of lasers and amplifiers with linearly polarized output. In addition, the large core/clad ratio (18/250), enables, design of short length pulsed amplifiers capable of delivering much higher pulse energies and peak powers than conventional Er/Yb fibers with single mode cores.

""The PM-EYDF-18/250 fiber should facilitate the development of high power fiber lasers and amplifiers at eye-safe wavelengths, which to date has been hampered by the power levels and pulse energies attainable using current commercially available Er/Yb co-doped fibers,"" says Mike O'Connor, Nufern's Product Line Manager for High Power Fibers and Subassemblies. ""While the fiber is not truly a large mode area fiber, the design allows for achieving a near diffraction limited beam and offers an interim solution until we develop an LMA technology for eye-safe wavelengths.""

Through experience in rare-earth doping and PM double clad fibers, Nufern delivers PM-Er/Yb co-doped fibers with industry leading tolerances on the key spectroscopic parameters ensuring the essential uniformity and lot-to-lot reproducibility required for volume manufacturing of high power lasers and amplifiers.

About Nufern
Nufern designs, manufactures, sells and supports fiber intensive fiber laser modules and specialty optical fibers for a diverse range of industries. From its production, research and development facility in East Granby, Conn., USA, Nufern works from its core competencies in optical fiber design and integration to offer a wide array of standard fiber laser fiber laser modules, fiber amplifier fiber laser modules and specialty fibers. Nufern’s integrated team works closely with customers to provide rapid and cost-effective fiber laser module and fiber design services. For more information, call toll-free, 866-466-0214, or visit www.nufern.com.