Note: Mounting ultra-high vacuum windows with low stress-induced birefringence

作者：Solmeyer Neal^*; Zhu Kunyan; Weiss David S

来源：Review of Scientific Instruments, 2011, 82(6): 066105.

DOI：10.1063/1.3606437

We have developed a way to mount ultra-high vacuum windows onto standard ConFlat (R) vacuum systems with very low stress-induced birefringence. Each window is sealed to a stainless steel flange with a compressed indium wire, and that flange is connected to a vacuum chamber with another indium seal. We find that deformation of a standard ConFlat flange during indium sealing dominates the stress on the window, so an extra-rigid flange is needed for minimal birefringence. With this mounting scheme, the typical residual birefringence is Delta n = 2.3 x 10(-7) and is unchanged by a 120 degrees C bake.

• 出版日期2011-6