MANUFACTUREABLE LONG CELL WITH ENHANCED SENSITIVITY AND GOOD MECHANICAL STRENGTH

摘要

A method of providing a manufactureable long vapor cell with enhanced sensitivity and good mechanical strength, wherein the method provides a structure that increases the overall length of the vapor cell.

主权项

1. A vapor cell, comprising:
a cell structure comprised of a center plate sandwiched between top and bottom plates; the center plate has a top and bottom surface and includes a central interior aperture extending completely through the plate, the top and bottom plates are substantially optically transparent to radiation passing through the vapor cell structure during operation of the device, each having top and bottom surfaces; the top surface of the bottom plate is bonded to the bottom surface of the center plate, wherein the top surface of the bottom plate includes a cavity that extends from the top surface of the bottom plate to a first depth across a width of the cavity and is aligned with a central interior aperture in the central plate with the open end of the cavity facing the central interior aperture; the bottom surface of the top plate is bonded to the top surface of the center plate, wherein the bottom surface of the top plate includes a cavity that extends from the bottom surface of the top plate to a second depth across a width of the cavity and is aligned with a central interior aperture in the central plate with the open end of the cavity facing the central interior aperture; heaters and sensors are attached to the bottom surface of the bottom plate; the bottom surface of the top plate attached to the top surface of the center plate, after which a photodetector is attached to the top surface of top plate; an interior cavity formed from the interior aperture in the center plate and the cavities formed in the top and bottom plates, when sealed with the top and bottom plates, wherein the top and bottom plates are configured to provide transparent apertures composed of curved surface interior walls that define lens portions of top plate and bottom plate to collimate a laser beam projected through the interior cavity; the interior cavity is filled with a cesium or rubidium vapor, as well as any a buffer gas; and a laser diode configured to provide laser light to excite the cesium or rubidium vapor in the interior cavity.