A High Temperature Calcium Vapor Cell for Spectroscopy on the 4s2 1S0 to 4s4p 3P1 Intercombination Line
Christopher J. Erickson, Brian Neyenhuis, Dallin S. Durfee
Abstract
We have demonstrated a high temperature vapor cell for absorption spectroscopy on the Ca intercombination line. The cell uses a dual chamber design to achieve the high temperatures necessary for an optically dense vapor while avoiding the necessity of high temperature vacuum valves and glass-to-metal seals. We have observed over 50 percent absorption in a single pass through the cell. Although pressure broadening in the cell prevented us from performing saturated-absorption spectroscopy, the broadening resulted in higher signal-to-noise ratios by allowing us to probe the atoms with intensities much greater than the 0.2 uW/cm2 saturation intensity of the unbroadened transition.
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