Patent ID: 11879952
Assignee: GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An atomic vapor cell for performing RF measurements, the atomic vapor cell comprising:
a first optical window consisting essentially of transparent nonconducting material and comprising a first window bonding surface and a first cell window wall, the transparent nonconducting material of the first optical window being essentially free of electrically conductive materials including silicon to minimize distortion of radiofrequency fields by the first optical window;
an intermediate frame, disposed on the first optical window, consisting essentially of transparent nonconducting material, and comprising: a first frame bonding surface opposing and bonded to the first window bonding surface, a second frame bonding surface, and a cell frame wall, the transparent nonconducting material of the intermediate frame being essentially free of electrically conductive materials including silicon to minimize distortion of radiofrequency fields by the intermediate frame;
a second optical window disposed on the intermediate frame such that the intermediate frame is interposed between the first optical window and the second optical window, consisting essentially of transparent nonconducting material, and comprising: a second window bonding surface opposing and bonded to the second frame bonding surface, and a second cell window wall, the transparent nonconducting material of the second optical window being essentially free of electrically conductive materials including silicon to minimize distortion of radiofrequency fields by the second optical window;
a cell aperture bounded by the first cell window wall of the first optical window, the cell frame wall of the intermediate frame, and the second cell window wall of the second optical window; and
anodic bonding material interposed between the first optical window and the intermediate frame that bonds the intermediate frame to the first optical window and interposed between the second optical window and the intermediate frame that bonds the intermediate frame to the second optical window,
wherein the atomic vapor cell is hermetically sealed by bonding between the first optical window and the second optical window to the intermediate frame.