Haotian 60W MOPA JPT M7 Fiber Laser Engraver

Haotian HT-60 MOPA Fiber Laser

The 60W MOPA JPT Fiber Laser Engraving Machine is designed for precision and speed, making it perfect for industrial and creative applications. With the ability to perform deep engravings, as well as color markings on stainless steel and titanium, this machine offers unmatched versatility. The MOPA technology allows for adjustable pulse duration, ideal for creating intricate details and high-contrast markings. Whether for jewelry, tools, or decorative metal pieces, this machine is a true powerhouse for any professional workshop.

This article covers how fiber lasers work, what makes MOPA lasers different, safety considerations, compatible materials, available lenses, and basic operating procedures.

How Fiber Lasers Work

A fiber laser produces a 1064 nanometer wavelength infrared laser beam. The beam is generated by the laser source and travels to the laser head through a fiber optic cable. A pair of galvo mirrors inside the laser head redirect the beam through a focusing lens and onto the work surface. When the beam hits a compatible material, the energy is absorbed and the material is vaporized or ablated away.

All fiber lasers are pulsed lasers. They emit in a frequency that the operator controls.

What Makes a MOPA Laser Different

MOPA stands for Master Oscillator Power Amplifier. MOPA lasers are a sub-type of fiber laser that give the operator control over the specific waveform of each pulse.

The key additional control is called "Q-Pulse," which adjusts the pulse width (the duration of each pulse, measured in nanoseconds). This extra parameter allows for effects that standard fiber lasers cannot achieve, including coloring stainless steel and more consistent plastic engraving.

Specifications

Specs Page

Parameter	Value
Laser Power	60 watts
Wavelength	1064 nm
Max Speed	5000 mm/s
Frequency Range	1 - 4000 kHz
Q-Pulse Range	1 - 500 ns
Minimum Line Width	0.01 mm
Minimum Character Size	0.15 mm

Safety

⚠️ The Haotian HT-60 is a Class 4 laser. Eye safety and ventilation are critically important. Failure to follow safety procedures can result in immediate, irreversible injury.

Eye Safety

A Class 4 laser will cause immediate, irreversible damage to your retinas. Both the operator and anyone nearby are at risk. The laser enclosure door must be closed before starting any job, and appropriate laser safety eyewear rated for 1064 nm should be worn any time the enclosure is open during operation.

Ventilation

Because the laser vaporizes material during engraving, proper ventilation is required for every job. Fine metal dust is harmful to your lungs, and certain materials can produce dangerous or deadly fumes when vaporized. Always know exactly what material you are engraving before you start.

Materials

Recommended Materials

Metals — The HT-60 works well with almost all metals, including steel, aluminum, brass, gold, and silver.

Opaque Plastics — Opaque, colored acrylics, polycarbonate, PET, and ABS can all be engraved.

Natural Materials — Stone, slate, and leather (darker leather works better) are all compatible.

Materials That Will Not Engrave

Wood, glass, and clear plastics (acrylic or polycarbonate) do not absorb the 1064 nm wavelength and will not engrave with this laser.

Banned Materials

⚠️ The following materials must never be used in the fiber laser. They produce toxic or deadly fumes when vaporized.

PVC (Polyvinyl Chloride) — When vaporized, PVC can create chlorine gas. On contact with moisture (such as the inside of your lungs), chlorine gas converts to hydrochloric acid. Never engrave PVC.

Chrome-Tanned Leather — Vaporizing chrome-tanned leather can produce toxic chromium fumes. Only vegetable-tanned or untanned leather should be used.

Lenses

The HT-60 has four interchangeable lenses. Swapping lenses changes the laser dot size, work area, and depth of field.

Smaller lenses produce a smaller dot size (higher resolution) but have a smaller work area and a shallower depth of field. Larger lenses produce a larger dot size (lower resolution) but cover a larger work area with a deeper depth of field.

Lens	Work Area
F100	70 x 70 mm
F160	100 x 100 mm
F290	210 x 210 mm
F430	300 x 300 mm

As a general rule, use the smallest lens that your design will fit inside, unless you are deep engraving thick materials (which benefits from a larger depth of field).

Focusing

Each lens has a corresponding acrylic focus rod. To set focus:

1. Select the correct focus rod for the installed lens.
2. Place the focus rod across the lens.
3. Use the crank on top of the laser head to raise or lower it until the rod lightly touches the top of your material.
4. Remove the focus rod and store it back in its holder.

Operating Procedures

Pre-Operation Checklist

1. Install the desired lens.
2. Insert material into the laser enclosure.
3. Adjust focus using the acrylic focus rods.
4. Open Lightburn and set the machine profile for the selected lens.
5. Frame the design using the inline red laser and adjust position as needed.
6. Turn on ventilation.
7. Close the enclosure door.
8. Start the job.

Post-Operation Checklist

1. Turn off ventilation.
2. Return all focus rods to their storage location.
3. Remove material from the enclosure.
4. Clean the machine and workbench.
5. Clean the filter.
6. Close out of Lightburn.

Lightburn Software Notes

Lightburn is the software used to control the HT-60. A few important things to keep in mind:

Each lens has its own machine profile in Lightburn. Always verify you have the correct profile selected before running a job.

Designs are organized into layers, and each layer can have independent settings for power, speed, frequency, and Q-pulse.

Setting Limits

Parameter	Safe Operating Range
Power	0 - 90% (running above 90% quickly degrades the laser)
Frequency	1 - 4000 kHz
Q-Pulse	1 - 500 ns
Line Interval	0.01 - 0.1 mm

Framing

The HT-60 includes an inline red laser that travels through the galvo mirrors. This allows you to preview (or "frame") the design position on your material before engraving. There are three framing patterns available:

Bounds

Traces the rectangular bounding box of the design.

Hull

Traces the convex hull (outer shape) of the design.

Contour

Traces the actual outline contour of the design.

Reference Material

The 60W MOPA Fiber Laser requires sign-off before use. New users must complete the Fiber Laser Safety Class before operating the machine. Post questions or request sign-off in the #laser-engraver Slack channel.

Reference materials are available for use near the machine:

• Fiber Laser Safety Class Presentation
• Fiber Laser Posters (pre/post-operation checklists and approved materials)