SPI Lasers redENERGY G4 H-Type 70W
MOPA (Master Oscillator Power Amplifier) · UK — MOPA pulsed ytterbium fiber — Independently adjustable pulse width (2–500 ns) and frequency (1–4000 kHz). High frequency flexibility; pulse energy per pulse is lower than Q-switched at equivalent average power.
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
| Fluence at 2 mm spot | 0.0398 J/cm² |
| Fluence at 5 mm spot | 0.00637 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.
Published Specifications
| Brand | SPI Lasers |
| Model | redENERGY G4 H-Type 70W |
| Origin | UK |
| Laser type | MOPA pulsed ytterbium fiber |
| Wavelength | 1060 nm |
| Average power | 70 W |
| Max pulse energy | 1.25 mJ |
| Pulse width | 3–2000 ns (adjustable) |
| Pulse frequency | 1–4000 kHz |
| Cooling | Air |
| Beam quality (M²) | < 1.6 |
Source: https://www.spilasers.com/wp-content/uploads/2020/07/SM-S00219-G4-Datasheet_PDFN.pdf
Compatible Material Pages
Laser cleaning parameters for common materials processed by fiber laser systems.
Specifications sourced from manufacturer datasheets. Values are reference data — validate against your machine's actual calibration before production use.