DC-200/40-PZ-Yb0 pages

Crystal Fibre ● aeroLASE ● Koheras ● SuperK

DC-200/40-PZ-Yb

Polarization
Maintaining

Rare Earth
Doped

Large
Mode-area

Single
Mode

Single-mode, polarizing double-clad Ytterbium-fiber with large mode area

Single mode, single polarization
Large mode area
High pump absorption
High NA circular pump core
Efficient pump absorption - no skew rays
Coil Control ensuring excellent stability

The DC-200/40-PZ-Yb with Coil Control represents the top performance in flexible ytterbium fibers. It features a mode area of
more than 700 µm2 while keeping single-mode beam quality.
Moreover, the fiber is polarizing resulting in improved PER compared to normal polarization-maintaining fibers.
The multimode pump light is guided by our proven airclad technology, ensuring low loss, high damage threshold and a large
numerical aperture (NA). The large NA relaxes tolerances on
coupling optics and facilitates the use of lower brightness diodes.
The combination of robust single-mode guidance, excellent PER
and a large mode-area, has made the DC-200/40-PZ-Yb the
preferred choice for many industrial fiber laser manufactures in
the high end segment.
The fiber is also available with sealed ends or with end-caps
and high power SMA connectors in our aeroGAIN FLEX range.
Applications
- High pulse energy fiber amplifiers
- Fiber lasers

Optical properties
Signal core
Mode properties
M2 @ 1060 nm
Mode field diameter
Mode field area
NA @ 1060 nm
Multimode pump core
Numerical aperture @ 950 nm
Pump absorption @ 920 nm
Pump absorption @ 976 nm
Polarization Parameters
Birefringence n
Polarization Extinction Ratio

Left: Optical microscope picture of the core region. Right: Near field
measured at 1060 nm.

Physical properties
Signal core diameter
Inner cladding diameter, ID
Outer cladding diameter, OD
Coating diameter
Outer and inner cladding material
Coating material, single layer

Coil Control
The DC-200/40-PZ-Yb features Coil Control, ensuring that the
fiber always coils in the correct plane leading to superior mode
stability and easy use. We recommend a bending diameter in
the range 25-40 cm, and best PER is obtained when operating
the fiber in the slow axis.
Please note that degradation of the PER and efficiency can
occur if the fiber is forced to coil in a different plane or twisted
in the coil.

Single mode
< 1.3
30 ± 2 µm
700±100 m2
~ 0.03

0.55 ± 0.05
~ 3 dB/m
~ 10 dB/m

The single-mode advantage
All our double-clad fibers in the Crystal Fibre range are strictly single-mode
leading to several advantages compared to standard multimode LMA fibers:

1·10-4
> 15 dB

- Better output stability
- Highest possible beam quality
- No requirements on tight coiling
- No coiling-induced mode area compression

Covered by U.S. Patents 5907652, 6334019, 6603912, 6888992

NKT Photonics A/S (Headquarters)
Blokken 84 ● 3460 Birkerød ● Denmark
Phone: +45 4348 3900
Fax:
+45 4348 3901
www.nktphotonics.com

40 ± 2 µm
200 ± 5 µm
450 ± 20µm
540 ± 30 µm
Pure silica
HT acrylate

NKT Photonics GmbH
Schanzenstrasse 39 ● Bldg D9-D13
51063 Cologne ● Germany
Phone: +49 221 99511-0
Fax:
+49 221 99511-650

DC-200-40-PZ-Yb-120614

NKT Photonics Inc.
1400 Campus Drive West ● Morganville
NJ 07751 ● USA
Phone: +1 732 972 9937
Fax:
+1 732 414 4094