The Tiger Hill Pagoda

One of the most iconic structures on Huqiu is the Yunyan Pagoda, also known as the Tiger Hill Pagoda. This seven-story octagonal pagoda reaches a height of 48 meters and has been leaning for centuries due to its unstable foundation. The pagoda has been compared to the Leaning Tower of Pisa and serves as a symbol of the rich architectural history of Suzhou. The pagoda's tilt was because of the incompressible clay layer beneath its foundation, yet it has withstood the test of time and remains a testament to ancient Chinese engineering.

Material: aluminum nitride

Processing method: Deep etching/engraving

By utilizing the HAZ-minimum processing characteristics of ultrafast laser and adjusting the energy density and scanning path, layer by layer peeling is carried out on the ceramic surface to accurately restore the eaves and brick texture of Huqiu Tower with an etching depth of 579 μ m. By optimizing the path of the light spot, the subtle curvature of the tilted tower body is cleverly replicated.

Precision drilling

When ultrafast laser penetrates materials, there is almost no thermal diffusion, the pore wall is smooth and vertical, and there are no microcracks at the edges, ensuring structural strength.