Over 270W at 1080nm from an ytterbium doped fibre laser and over 100W at 1565nm from an erbium-ytterbium fibre laser have been achieved
Johan Nilsson of SPI (Southampton Photonics) and the ORC
(Optoelectronics Research Centre, University of Southampton)
presented results at the Photonics West Conference in San Jose
this week, which further enhance the rapid advances being made in
optical fibre and pump technology.
These results indicate that
cladding pumped fibre lasers are producing the high powers
required to replace traditional lasers in important application
In published experiments, over 270W of single-mode output
power at 1080nm from an ytterbium doped fibre laser (YDFL) and
over 100W of single-mode output power at 1565nm from an
erbium-ytterbium fibre laser have been achieved.
these are the highest powers ever produced using ytterbium and
erbium-ytterbium single-mode fiber lasers.
lasers are among the most efficient of all rare-earth doped fibre
lasers, and erbium-ytterbium co-doped fibre lasers are the most
efficient type of high-power laser of any kind operating in the
'eye-safe' wavelength region at around 1550nm.
appropriate fibre designs, SPI expects single-mode fibre lasers
with 1kW of output power to be realisable in the not too distant
It is also anticipated that the recent rapid improvements
will continue and will spread to more refined fibre lasers with
single-polarisation, narrow-linewidths, and pulsed sources.
Stuart Woods, SPI's director of business development,
commented: "This development is typical of the
ground-breaking work underway at SPI to bring disruptive,
high-power fibre technology to market offering both lower unit
and total ownership cost for customers in a variety of
World record-beating results from a 980nm
laser using SPI patented ytterbium ring-doped cladding pumping
technology, are also being presented at the ASSP (Advanced Solid
State Photonics) Conference in San Antonio, Texas in early