Coherent PowerLine L 400 (Nd:YAG) Laser Cleaning Parameters
Sourcehttps://www.coherent.com/machines-systems/laser-marking-engraving/powerline-series
Coherent's L 400 carries Rofin's German diode-pumped Nd:YAG lineage into laser cleaning as a bulk-crystal OEM source, not another fiber marker. It spalls photovoltaic thin films and dielectric layers off glass, where its 30 mJ, 429 kW pulses lift coatings fiber heads leave behind. Water cooling and 325 W separate it from the line's air-cooled fiber siblings, buying single-pulse energy for silicon carbide conditioning and thick-scale removal.
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OEM Laser Source Module
This is a laser source module sold to system integrators — not a complete laser cleaning machine. Specifications reflect the bare source only. End-user systems built on this module will vary in beam delivery, scan head, and enclosure.
Derived Parameters
| Peak power | 429 kW |
| Fluence at 2 mm spot | 0.955 J/cm² |
| Fluence at 5 mm spot | 0.153 J/cm² |
| Overlap (cleaning) | 60–80% |
Field spot diameter varies by scan head — 2 mm and 5 mm are representative values for handheld cleaning heads.
Derived from published specifications.
Canonical Specifications
Entity-fact-cited specifications for the Coherent PowerLine L 400 (Nd:YAG) sourced from the canonical machines entity registry. Each row is anchored to a citation.
| Max Power | 325 W |
| Pulse Energy | 30 mJ |
| Pulse Duration | 70 ns |
| Repetition Rate | 6–50 kHz |
| Beam Quality (M²) | 2 |
| Cooling Method | Water |
| Weight | — |
Published Specifications
| Brand | Coherent |
| Model | PowerLine L 400 (Nd:YAG) |
| Origin | Germany / USA |
| Laser type | Q-switched Nd:YAG DPSS |
| Wavelength | 1064 nm |
| Average power | 325 W |
| Max pulse energy | 30 mJ |
| Pulse width | 70 ns (fixed) |
| Pulse frequency | 6–50 kHz |
| Cooling | Water |
| Beam quality (M²) | < 2 |
Source: https://www.coherent.com/machines-systems/laser-marking-engraving/powerline-series
Parameter ranges
Coherent PowerLine L 400 (Nd:YAG) positioned against other Coherent machines. Orange/blue = this model; slate band = Coherent min–max for that property. Missing properties are omitted.
Fleet Power vs. Pulse Energy
Where the Coherent PowerLine L 400 (Nd:YAG) sits among 52 laser-cleaning machines with published power and pulse energy. Log-scale axes; shape = architecture; orange highlight = this machine.
| Machine | Max Power (W) | Pulse Energy (mJ) |
|---|---|---|
| Netalux Jango® | 200 | 100 |
| cleanLASER CL1000iF | 1000 | 10 |
| PULSAR Laser SHARK P CL 100M | 100 | 1.5 |
| PULSAR Laser SHARK P CL 200M | 200 | 1.5 |
| PULSAR Laser SHARK P CL 300M | 300 | 1.5 |
| PULSAR Laser SHARK P CL 500A | 500 | 1.5 |
| PULSAR Laser SHARK P CL 1000A | 1000 | 1.5 |
| Laserax LXQ-UHP Series (500W–3kW) | 1750 | 100 |
| 4JET JETLASER M200 | 200 | 10 |
| 4JET JETLASER M500 | 500 | 100 |
| 4JET JETLASER M1000 | 1000 | 100 |
| SenFeng SF500HC | 500 | 50 |
| SenFeng SF1000HC | 1000 | 50 |
| Han's Laser HC-PD | 125 | 1.5 |
| P-Laser QF-500 | 500 | 50 |
| P-Laser QF-1000 | 1000 | 100 |
| P-Laser QF-2000 | 2000 | 100 |
| Powerlase Vulcan 500c | 500 | 40 |
| Powerlase FL-C100C | 100 | 5 |
| JNCT Laser 100W Air Cooling Laser Cleaning Machine | 100 | 1 |
| JNCT Laser 200W Air Cooling Laser Cleaning Machine | 200 | 1 |
| Wuhan Sintec STPL-V-i500C | 500 | 60 |
| Wuhan Sintec STPL-V-i1600 | 1600 | 250 |
| Han's Laser HC-PD 50W | 50 | 1.1 |
| Han's Laser HC-PD 100W | 100 | 1.5 |
| Han's Laser HC-PD 200W | 200 | 1.5 |
| Netalux Needle 100 | 100 | 1 |
| Netalux Needle 150 | 150 | 1 |
| Netalux Needle 200 | 200 | 2 |
| Netalux Needle 300 | 300 | 2 |
| cleanLASER CL 500 | 500 | 25 |
| P-Laser QFC-50 | 50 | 1 |
| P-Laser QFC-100 | 100 | 1 |
| P-Laser QFC-200 | 200 | 1 |
| P-Laser QFC-300 | 300 | 1 |
| Laserax LXQ-UHP 500W | 500 | 100 |
| Laserax LXQ-UHP 1000W | 1000 | 100 |
| Laserax LXQ-UHP 2000W | 2000 | 150 |
| Laserax LXQ-UHP 3000W | 3000 | 150 |
| Fortune Laser FL-C200 | 200 | 2 |
| Fortune Laser FL-C300 | 300 | 2 |
| P-Laser ECO-C 200 | 200 | 1 |
| P-Laser ECO-C 500 | 500 | 1.5 |
| Netalux Kamino 300 | 300 | 50 |
| Narran ROD 300 Air | 300 | 15 |
| Narran ROD 500 | 500 | 50 |
| Narran ROD 1000 | 1000 | 50 |
| Narran ROD 2000 | 2000 | 100 |
| Narran ROD 100 Air | 100 | 1.54 |
| Narran ROD 500 Bright+ | 500 | 100 |
| Narran ROD 1000 Bright+ | 1000 | 100 |
| Narran ROD 2000 Bright+ | 2000 | 100 |
- MOPA
- Q-HE
- Q-std
Specifications sourced from manufacturer datasheets. Values are reference data — validate against your machine's actual calibration before production use.