Ask a Question
Coherent DQ Series
Coherent DQ Series


In addition to the fiber lasers, our solid-state lasers are the tool of choice, whenever a flexible beam guidance is required. They are well applied for laser cutting, laser welding, removing, drilling and scribing. Solid-state lasers have also proven to be the ideal beam source for most marking applications. Coherent-ROFIN offers an extensive choice of CW-, pulsed and Q-switched solid-state lasers with a power range between 3 and 1000 W – in all cases the right laser for your application.

Q-Switched Lasers for Surface Treatment Applications

Technical Data

Nd:YAG, Fiber lasers, Diode lasers
50-300 µm
1-10 m
Numerical aperture
Mean power
500 W
Fiber losses
< 3%, (typically 1%)
Back reflections
Air-cooled: 100 W for 2 s, 40 W for 60 s Water-cooled: 150 W for 2 s, 100 W for 60 s
Compatible interface
SMA905 (z-plane moved 25 mm)

Typical Applications

  • Decoating of Tailored Blanks, Solar Cells or LCD Displays
  • Color Ablation of Glas and other Materials
  • Cleaning of Tools and Moulds



Materials Processing
Ablation-Material Removal
Surface Modification
Surface Coating
Flat Panel Display
Solar Cell

Features & Benefits

Laser Ablation, Laser Cleaning, Insulation – the Q-switched lasers of Coherent-ROFIN are the ideal tool for these and other surface treatment applications.

The DQ Series, which is based on the reliable diode-pumped Nd:YAG lasers, is suitable for diverse industrial requirements. The versions differ in power, pulse energy and equipment. The unique principle of the Q-switch makes peak pulse performances possible that are a 3000 times higher than the cw laser power.

Please Read Before Continuing

Risk factors: Except for the historical information contained here, many of the matters discussed in this Web site are forward-looking statements, based on expectations at the time they were made, that involve risks and uncertainties that could cause our results to differ materially from those expressed or implied by such statements. These risks are detailed in the “Factors That May Affect Future Results” section of our latest 10-K or 10-Q filing. Coherent assumes no obligation to update these forward-looking statements.

I have read the terms and conditions