Patent ID: 8836327
Filing Date: 2014-09-16
Classification: G01R,H01L

Abstract:
1. A magnetometer comprising: a vapor cell die, having a top surface and a bottom surface, that is configured to receive and modulate a light, wherein the vapor cell has a vapor cavity, containing a gas that is hermetically sealed within the vapor cavity; a base die, having top and bottom surfaces, wherein the top surface of the base die is coupled to the bottom surface of the vapor cell die and the base die is configured to include a laser light source providing a light beam, wherein the longitudinal axis of the light beam output is vertically aligned with a photodiode and the vapor cavity; a photo detection die, having top and bottom surfaces, the bottom of the photo detection die is coupled to the top of the vapor cell die, wherein the photo detection die has a photodiode configured to receive a modulated light and then generating a light signal that represents the magnitude of the received light; wherein the vapor cell die further comprises: