Recent development and applications of High Power Fiber Lasers · 16/06/2014 · QCW Fiber Lasers Replacement for Lamp-pumped Lasers • Pulse duration: 0,2-10ms / Pulse Energy up

Recent development

and applications

of High Power Fiber Lasers

IPG Photonics Corporation

Grzegorz ChrobakVilnius, 16 June 2014

Copyright IPG Photonics

Agenda

� IPG Photonics Corporation

� Wavelength

� Beam Quality

Fiber lasers for cutting and welding

Cladding, Brazing

� Time regimes ms, ns, ps

� High efficiency laser

� Conclusion

IPG Photonics Corporation

IPG Photonics Confidential3 6/24/2014

Market and Technology Leader in High-Power Fiber Laser

2900 employees world wide10 Application labs world wide

World wide sales and service organizationTurnover 2013: 648 Mio. US$

New offices in Poland, Russia and China

Sales and Gross Margin Growth

IPG is the Fiber Laser Company


• Wavelength: 355 nm• High Peak Power - Up to 50 kW• Short 1 ns Pulse Duration• Output Power: Up to 30 W• Air-cooled

UV Green

Wavelength: 532nm• High Peak Power - Up to 200 kW• Short 1 ns Pulse Duration• Output Power: Up to 50 W• Air-cooled

Wavelength: 532nm• qcw power up to 500W• Single Mode• Water cooled• Efficiency 18%

Ultraviolett and Green Lasers

Structuring P2+P3 Thin Film Solar cells

Direct Diode Lasers @ 975nm


Wavelength: 975 nm (single wavelength)Efficiency: up to 50%Power: up to 2kWPower �� Fiber diameterDLR-100-AC 100µmDLR-500-AC 350µmDLR-1000-WC 450µmDLR-2000-WC 550µm

Applications:Scorching of brake pads, Welding of plastic, Edgebanding


Courtesy: Leibniz University Hannover/ Laser Zentrum Hannover eV

Thulium Fiber laser @ 1940 nm

Applications: - transparent plastic processing- laser weeding

50 W air-cooled module

120 W water-cooled module

New family compact lasers for cutting


Maximal power: 6 kWBPP: 2 mm * mrad (50 µ)

3.5 mm * mrad (100 µ) Wavelength: 1070 nmConsumption: ~ 14 kWWall-plug eff.: ~ 36%Height: 556 mmFoot print: 1004 x 804 mmWeight: 250 kg

Hermetically sealed cabinetAir conditioner is replaced by dryer

Height: 1206 mmFoot print: 856 x 806 mmWeight: 350 kg

Ytterbium Fiber Laser @ 1070nm


Up to 100kW in 300µm fiber Fiber to fiber coupler 50m long process fiber 500µm


from true single-mode

to flat-top multi-mode


Beam Quality

Øfiber: 100µm 150µm 200µm

BPP: ↓0.4 ↑3 ↑ 5 ↑6.5 ↓ 45 mm mrad

Fiber laser for cutting and welding


PL=12kWT≤12mmTS≤1100N/mm2

Laser hybrid welding,cutting of holes and marking Length of manipulator ≈ 20m

Laser: YLS-12000-S2with 2-way beam switch• 200µm fiber for cutting • 300µm fiber for welding for best

root appearance

Courtesy of: Carl Cloos GmbH


Courtesy of IMG Rostock

YLS-16000-S4with energy sharing2 exits 8kW for cutting200µm fiber1 exit 16kW for welding300µm fiber

20mm

Fiber laser for cutting and welding


Inconel 625 on mild steel: 15 kW, 1000 mm/min, Ø = 5 mm, scan freq. 100 Hz, dilution 3%, deposition rate 14.7 kg/h.

Homo-geneouspower distribution:

Øspot3-6mm

Fiber Laser Cladding

Courtesy of: Reis robotics and NU-Tech


Fiber Laser BrazingBrazing: ØAspot=3-4mmZn coated steel (right)

Al + Zn coated steelWith flux core wire(bottom) v=3m/min


QCW Fiber Lasers

Replacement for Lamp-pumped Lasers• Pulse duration: 0,2-10ms / Pulse Energy up to 200J• Energy Efficiency: >30% • High Peak Power• CW operation at average power• Beam Quality Optimized for Applications • SM up to 300W average power• Air-cooled up to 600W• Internal Pulse Generator & Pulse Shaping

YLR-150/1500-QCW

YLM-300/3000-QCW


QCW Fiber Lasers


Parameters:Pav=4000WSquare fiber: 600x600µmAblation rate:21cm²/s

Applications:• Surface Prep. for Gluing• Texturing• Cleaning w/o chemicals

Megapulse Ytterbium Fiber Lasers

High efficiency laser

Production Year 2008WPE ≈ 25 %



Production Year 2014WPE > 40 %

Output power > 6 kW

Wave Length 1070 nm

Delivery Fiber 50 µm, 100 µm, 200 µm

BPP @ 50 µm < 2 mm x mrad

Footprint 856 x 806 mm

Height 1206 mm

Power Consumption < 15 kW

Wall Plug Efficiency > 40 %


Conclusion

� CW Ytterbium fiber lasers are in widest use for cutting and

welding. Powers up to 100kW available

� Wavelength range from 355 to 1940nm is realized

� Beam Qualities between 0.4 and 45 mm*rad are available

which are used for cutting, welding, brazing, cladding

� QCW laser up 200J pulse energy are used for drilling

� Megapulse lasers with ns range pulses for cleaning and paint

stripping (Peak power of several 100kWs)

� Even higher energy efficiency >40% is realized

� Fiber laser technology is an excellent base for tailoring

industrial light sources.

Thank You for Your Attention

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Recent development and applications of High Power Fiber Lasers · 16/06/2014 · QCW Fiber Lasers Replacement for Lamp-pumped Lasers • Pulse duration: 0,2-10ms / Pulse Energy up