For our quartz octagonal and quartz 6-way cross designs, we offer various options for double-side AR treatment on all window surfaces. For rectangular cells, we can only offer external AR coating. Internal AR coating of an enclosed area is not possible due to limitations of the deposition process.
We offer cells with sources made using SAES alkali metal dispensers (AMDs). Rb sources are the most common but we also offer Cs, K and Na upon request.
A typical single source contains 2 or 3 SAES AMDs plus a common wire.
We advise sending current to only one AMD at a time. Operating more than one dispenser within the same source is likely to burn up the common wire leading to a non-functioning source and potentially creating a leak at the feedthrough.
The recommended maximum temperature is 250C limited by the glass to metal seal. A temperature ramp up of 2 C/min is a safe rate.