Post on 18-Jun-2018
O P T I C A L F I B E R S — F I B E R G Y R O C O I L S — D E F E N S E T E C H N O L O G Y — F I B E R L A S E R S & A M P L I F I E R S
www.nufern.com
Controlling Beam Stability and Uniformity
Beam Delivery Fibers for Generating Flat-Top Beam OutputNuBEAM Flat-Top fibers are specially designed to scramble the mode content propagating in its core, tailoring the mode power distribution to achieve flat-top beams. In addition, these fibers have been carefully engineered to allow precise control of the output beam parameter product (BPP) or beam divergence. Nufern’s flat-top beam delivery fibers offer unique performance attributes to efficiently convert Single-Mode (SM) and Multi-Mode (MM) beams into flat-top beam profiles. NuBEAM Flat-Top fibers are perfectly suited to be easily and efficiently integrated with existing fiber and free-space based optical systems and are designed to handle multi-kilowatt power levels. These unique fibers offer the highest level of performances for laser, amplifier and light delivery systems requiring either flat-top and homogeneous beams, mode mixing or BPP enhancement.
7 Airport Park Road, East Granby, CT 06026 Toll Free: 866.466.0214 | Tel: 860.408.5000 | Fax: 860.844.0210 | www.nufern.comCapabilities and typical design parameters are described above. Various standard and OEM designs are available. NU238-1/16
Optical Attributes• Beam Transformation — From Gaussian to Flat-Top beam profile
• Mode conversion — Achieve targeted BPP
• Multimode beam homogenization — Reduction of hot spots
• Efficient brightness conservation of multimode beams
• Suitable for Multi-kW beam delivery
Features & Benefits• All-in-fiber solution — Simple system integration with
conventional splicing/connector techniques
• Beam delivery cable format — Compatible with industry standards
• Pure silica core — Low attenuation over a wide spectral range from UV-VIS to NIR
• All fiber proof tested to > 100 kpsi — Critical for ensuring long term reliability
• Scalable design — Can be optimized to achieve specific customer requests
Mechanical Attributes• Robust design — Compatible with majority of fiber
interconnect systems
• Clean room processing — Provides high-strength and long-life
• Core diameters ranging from 50 μm to 600 μm — Covers low to high power applications
Controlling Beam Stability and Uniformity
®
Applications• Beam delivery for high power fiber, solid-state or direct diode
lasers
• Material processing applications requiring Flat-Top beams
• Uniform illumination for imaging and spectroscopy
• All-Fiber solution for mechanical mode scramblers used for medical applications
• Homogeneous tissue exposure for laser-assisted surgery
NuBEAMFlat-Top
Technology
OUTPUT BEAMINPUT BEAM
SM MM
Standard BD Cables
MM MM
BPP
~ 2
.5
3 < BPP < 4
Single ModeSingle Mode
Few ModedFew Moded
100’s of Modes100’s of Modes
100 μm Core
Flat-Top
BPP
Incr
ease
BPP
> 5
Standard BD Cables
1.0
0.8
0.6
0.4
0.2
0.0-80 -40 0 40 80
BPP Conserved