2-6 MOPA Color Marking Parameters

1. MOPA Color Marking

MOPA laser sources, with their adjustable pulse width and frequency, can produce different colors on specific materials. By fine-tuning these parameters, the laser forms oxide layers of varying thickness on the material's surface, altering light interference effects and creating a range of colors such as blue, red, and green.

Compared to standard black-and-white marking, color marking is more sensitive to focus, power control, and material properties. Even slight variations can cause color shifts or make it difficult to achieve consistent results. Therefore, precise focus adjustment and testing are essential to obtaining the desired color effects.

2. Factors Affecting Color Marking Results

• Material properties
• Focus settings

3. Color Testing

Please make sure to first use the color test file provided by Beam Studio to test on your material.

After testing the material and confirming your desired color, proceed with marking using the parameters for that color.

This color test file is applicable for matte stainless steel.

Focus Length 1	Focus Length 2 = Focus Length 1 ＋ 2mm	Focus Length 3 = Focus Length 1 ＋ 3mm
The surface shows dark brown	Displays color when refracted	Displays color when refracted

 

5. Actual Marking Results (Beam Studio's Promark color test file)

MOPA 20W	MOPA 100W

(If your material or other conditions differ from the test setup, further parameter adjustments may be required to achieve the desired results.)