IPG Photonics' quasi continuous wave (QCW) fiber
lasers produce peak power 10 times greater in
pulsed versus CW mode and are ideal for the
replacement of conventional flashlamp-pumped
YAG lasers used in spot welding, seam
welding & drilling. The QCW Series fiber
lasers can be retrofitted into most
existing systems. These compact
units are substantially more
cost-effective than lamp-pumped
YAG lasers due to >30% wall-plug
efficiencies and maintenance-
free operation.
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First in the world IPG's Quasi-CW fiber lasers are available for requalifying existing lamp-pumped processes at IPG’s application facilities and applications labs. IPG's QCW Series also features a highly cost-effective OEM module. |
Retrofit services, including engineers familiar with system integration, are available to help customers replace older production lasers with energy-efficient fiber lasers from IPG. |
| Maximum Peak Power = 10x Average Power | Wall-plug Efficiency >30% |
| Outstanding Pulse Power/ Energy Stability | Pulse Duration* 0.05-50 ms |
| Internal Pulse Generator/ Pulse shaping | Single-mode or Multi-mode |
* Minimum pulse duration is 10 microseconds upon request. Please contact your IPG representative.
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Q-switched fiber lasers are capable of providing pulse energies in the mJ range, but for materials processing applications requiring multiple Joules of pulse energy at multi-kilowatt peak powers IPG has developed the unique Quasi-CW Fiber Lasers. These fiber lasers occupy the space between kW class CW fiber lasers and Q-switched pulsed lasers. They are very similar to kW class fiber lasers with one notable difference: their peak power during ON time is up to tenfold higher than their average power in pure CW mode of operation. Thus, these lasers can provide tens of joules of energy over a long pulse, from 50 microseconds to 50 milliseconds. Another important note is that although the same peak and average power could be obtained by modulating IPG's kW-class power ytterbium lasers, the QCW lases are significantly cheaper, providing affordable high peak power in several 100 Watt to a few kW average power range. |
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Individual Quasi-CW Fiber laser pulses can be modulated with analog control to achieve the optimal temporal pulse shape or pulse train for any particular application:
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The availability of true single-mode beam mode quality combined with very high pulse energy has never before been achieved in a competitively priced laser. |
Flat-top beam profile is optimal for many applications. YLM modules and YLR rack-mounted units are available with both single-mode and multi-mode feed fibers, YLS systems are available with multi-mode feed fibers starting from 50 micron core. |
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True single-mode beam mode quality
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Flat-top beam multi-mode beam mode Choice of delivery fibers: 50, 100, 200 or 300 micron core |
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replaces |
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YLM modules: OEM & Integrator |
YLR 19" rack-mountable units: compact user-friendly interface |
YLS systems: kW class industrial rugged design |
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| Interface | Analog/ RS-232 / Ethernet | Touchscreen front panel, RS-232, Digital I/O, Analog Control |
Standard: LaserNet, Digital I/O, Analog Control Optional: DeviceNet, Profibus or Ethernet |
| Average Power, W | Peak Power, W |
Enclosure Dimensions (W × D × H), mm |
Feed Fiber | |
| YLM-150/1500-QCW-AC | 150 | 1500 | 256 × 435 × 148 | Single-mode fiber to LC-8 connector |
| YLR-150/1500-QCW-AC | 448 × 502 × 177 | |||
| YLM-200/2000-QCW-AC | 200 | 2000 | 336 × 435 × 148 | |
| YLM-300/3000-QCW-AC | 300 | 3000 | 336 × 435 × 148 | 50, 100 or 200 μm fiber to LC-8 connector |
| YLR-300/3000-QCW-AC | 448 × 504 × 266 | |||
| YLM-450/4500-QCW-AC | 450 | 4500 | 416 × 566 × 148 | |
| YLR-450/4500-QCW-AC | 448 × 680 × 286 | |||
| YLM-450/4500-QCW-WC | 411 × 509 × 85 | |||
| YLR-450/4500-QCW-WC | 448 × 680 × 177 | |||
| YLS-600/6000-QCW-AC | 600 | 6000 | 775 × 800 × 550 | |
| YLS-600/6000-QCW-WC | 411 × 509 × 85 | |||
| YLS-900/9000-QCW-WC | 900 | 9000 |
1000 × 800 × 550 or 850 × 800 × 1100 |
100, 200 or 300 μm fiber |
| YLS-1200/12000-QCW-WC | 1200 | 12000 | ||
| YLS-1500/15000-QCW-WC | 1500 | 15000 | ||
| YLS-1800/18000-QCW-WC | 1800 | 18000 | ||
| YLS-2000/20000-QCW-WC | 2000 | 20000 |
-AC and -WC are air-cooled and water-cooled models, repectively.
Higher or lower powers are available upon request. Please contact your IPG representative.
Single-mode YLM-QCW and YLR-QCW models are available up to 2.5 kW peak QCW power.
CloseTWI (Cambridge, UK) endorses IPG's Quasi-CW fiber lasers
TWI endorses IPG QCW fiber lasers for spot welding, cutting, seam welding and drilling applications
TWI is one of the world’s foremost independent research and technology organizations, with expertise in materials joining and engineering processes as applied in industry.
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Wavelength, nm | Beam Mode | Modulation Frequency |
Output Power, average/peak, W |
| DLM-QCW | 895 | Multi-mode |
up to 10 Hz |
300/3000 and 600/6000 |
| YLM-QCW and YLR-QCW |
1070±5 | Single-mode | 0-50 kHz | 75/750 to 200/2000 |
| Multi-mode | 150/1500 to 600/6000 | |||
| YLS-QCW | Multi-mode | 0-5 kHz | 600/6000 to 2400/24000* | |
| YLS-QCW-AMB | 1070 ±2 | Multi-mode |
600/900/1200 |
* Higher output powers are available upon request.
| Drilling | Cutting |
| Spot Welding | Batteries |
| Seam Welding | Medical Devices |
| Microwelding | Computer Components |
QCW Fiber Laser Receives 2010 Prism Award for Photonics Innovation
Category of Industrial Lasers
The Quasi Continuous Wave pulsed fiber laser replaces the aging population of inefficient flash lamp-pumped solid state lasers with much smaller and longer lasting diode pumped devices. Plus, it has 30% rather than 3% wall-plug efficiency.
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| YLR-150/1500-QCW-AC |
