Patent Number: 
Section: claims

1. A vapor cell, comprising:a first wafer;a second wafer positioned adjacent to the first wafer, the second wafer defining a first opening, a second opening independent of the first opening, and a third opening independent of the first opening and the second opening; anda third wafer arranged with the second wafer and the first wafer to enclose:a first cavity overlapping with the first opening;a second cavity overlapping with the second opening and fluidly connected with the first cavity; anda third cavity overlapping with the third opening and fluidly connected with the second cavity. 2. The vapor cell of claim 1, further comprising:a dissociable material deposited in the first cavity, the dissociable material initiated to dissociate a gas to be transferred to the second cavity. 3. The vapor cell of claim 2, wherein the dissociable material is deposited on the first wafer and facing the first cavity. 4. The vapor cell of claim 1, further comprising:a getter material deposited in the third cavity, the getter material configured to absorb a gas transferred to the second cavity. 5. The vapor cell of claim 4, wherein the dissociable material is deposited on the third wafer and facing the third cavity. 6. The vapor cell of claim 1, wherein the second wafer is positioned between and secured to the first wafer and the third wafer. 7. The vapor cell of claim 1, wherein the first wafer is substantially transparent to ultra violet radiation. 8. The vapor cell of claim 1, further comprising:a first channel defined in the second wafer, the first channel fluidly connecting the first cavity with the second cavity; anda second channel defined in the second wafer, the second channel fluidly connecting the second cavity with the third cavity. 9. A vapor cell, comprising:a first wafer;a second wafer positioned adjacent to the first wafer, the second wafer defining a first opening and a second opening independent of the first opening; anda third wafer arranged with the second wafer and the first wafer to enclose:a first cavity overlapping with the first opening; anda second cavity overlapping with the second opening and fluidly connected with the first cavity. 10. The vapor cell of claim 9, further comprising:a dissociable material deposited in the first cavity, the dissociable material initiated to dissociate a gas to be transferred to the second cavity. 11. The vapor cell of claim 10, wherein the dissociable material is deposited on the first wafer and facing the first cavity. 12. The vapor cell of claim 9, further comprising:a getter material deposited in the second cavity, the getter material configured to absorb a gas received from the first cavity. 13. The vapor cell of claim 12, wherein the dissociable material is deposited on the third wafer and facing the second cavity. 14. The vapor cell of claim 9, wherein the second wafer is positioned between and secured to the first wafer and the third wafer. 15. The vapor cell of claim 9, wherein the first wafer is substantially transparent to ultra violet radiation. 16. The vapor cell of claim 9, further comprising:a channel defined in the second wafer, the channel fluidly connecting the first cavity with the second cavity. 17. A system, comprising:a first wafer;a second wafer positioned adjacent to the first wafer, the second wafer defining a first opening and a second opening independent of the first opening;a third wafer arranged with the second wafer and the first wafer to enclose:a first cavity overlapping with the first opening; anda second cavity overlapping with the second opening and fluidly connected with the first cavity; andan illumination source configured to direct radiation to one of the first cavity or the second cavity. 18. The system of claim 17, further comprising:a dissociable material deposited in the first cavity, the dissociable material initiated to dissociate a gas to be transferred to the second cavity. 19. The system of claim 18, wherein the dissociable material is deposited on the first wafer and facing the first cavity. 20. The system of claim 17, further comprising:a getter material deposited in the second cavity, the getter material configured to absorb a gas received from the first cavity. 21. The system of claim 20, wherein the dissociable material is deposited on the third wafer and facing the second cavity. 22. The vapor cell of claim 9, wherein the second wafer is positioned between and secured to the first wafer and the third wafer. 23. The system of claim 17, wherein the first wafer is substantially transparent to ultra violet radiation. 24. The system of claim 17, further comprising:a channel defined in the second wafer, the channel fluidly connecting the first cavity with the second cavity. 25. The system of claim 17, further comprising:a photodetector configured to measure the radiation passing through the second cavity; anda clock generation circuitry coupled to the photodetector, the clock generation circuitry configured to generate a clock signal based on the measured radiation. 26. The system of claim 17, further comprising:a photodetector configured to detect the radiation passing through the second cavity; anda magnetic field calculator coupled to the photodetector, the magnetic field calculator configured to generate a magnetic field measurement based on the detected radiation. 27. A vapor cell, comprising:a first wafer;a second wafer positioned adjacent to the first wafer, the second wafer defining a first opening, a second opening independent of the first opening, and a third opening independent of the first opening and the second opening;a third wafer arranged with the second wafer and the first wafer to enclose:a first cavity overlapping with the first opening;a second cavity overlapping with the second opening and fluidly connected with the first cavity; anda third cavity overlapping with the third opening and fluidly connected with the second cavity; anda getter material deposited in the third cavity, the getter material configured to absorb a gas transferred to the second cavity. 28. A vapor cell, comprising:a first wafer;a second wafer positioned adjacent to the first wafer, the second wafer defining a first opening and a second opening independent of the first opening;a third wafer arranged with the second wafer and the first wafer to enclose:a first cavity overlapping with the first opening; anda second cavity overlapping with the second opening and fluidly connected with the first cavity; anda getter material deposited in the third cavity, the getter material configured to absorb a gas transferred to the second cavity. 29. A system, comprising:a first wafer;a second wafer positioned adjacent to the first wafer, the second wafer defining a first opening and a second opening independent of the first opening;a third wafer arranged with the second wafer and the first wafer to enclose:a first cavity overlapping with the first opening; anda second cavity overlapping with the second opening and fluidly connected with the first cavity;an illumination source configured to direct radiation to one of the first cavity or the second cavity; anda getter material deposited in a third cavity, the getter material configured to absorb a gas transferred to the second cavity.