When it comes to achieving optimal contrast and detail in laser engraving, certain types of wood stand out due to their unique characteristics. Birch plywood is a top choice, as it offers a smooth, consistent grain that results in clear and detailed engravings. Its light color provides excellent contrast, making it ideal for intricate designs.

Maple is another popular option, known for its fine, uniform texture and light color. The tight grain structure allows for high levels of detail and sharpness in the engraving process.

Cedar is favored for its rich color and pleasant aroma, and it engraves well, offering a dark contrast to the lighter wood. Its unique grain patterns can also add character to laser engravings.

Cherry wood is known for its deep, warm tones that darken with age. It engraves beautifully, providing a striking contrast and allowing for detailed designs to emerge distinctly.

Lastly, walnut offers a darker palette, producing rich, dramatic engravings that highlight intricate details. Overall, the best choice depends on individual preferences and the specific aesthetic desired for the finished piece.