Ultra-low birefringence dodecagonal vacuum glass cell

الأصل · EN

We eport on an ultra-low birefringence dodecagonal glass cell for ultra-high vacuum applications. The epoxy-bonded trapezoidal windows of the cell are made of SF57 glass, which exhibits a very low stress-induced birefringence. We characterize the birefringence Δn of each window with the cell under vacuum conditions, obtaining values around e-8. After baking the cell at 150, we reach a pressure below e-10. In addition, each window is antireflection coated on both sides, which is highly desirable for quantum optics experiments and precision measurements.