UID marking a two-dimensional data matrix with 3mil data cell size was marked on polished plate stainless steel stock. The mark produced had excellent contrast. Total marking time was 0.6 seconds. A 20 Watt CW laser was used as opposed to Q-switched Fiber Laser to allow for the Contrast ratio to be as high as possible.

Sample Name: Polished Plate Working Distance:  
Material: 304 Stainless Steel Power: 30 % (~6 Watts)
Method Used: Laser Etching Frequency: N/A
Depth:   Speed: 5" / Second
Laser Type: CW Fiber Laser Passes: 1
Focal Length Lens: 97 mm Cycle Time: 0.6 Seconds