A compact and efficient strontium oven for laser-cooling experiments

Abstract

Development of a compact cylindrical reaction cavity for a microwave dielectric heating system Rev. Sci. Instrum. 83, 034703 (2012) Development of roll-to-roll hot embossing system with induction heater for micro fabrication Rev. Sci. Instrum. 83, 015108 (2012) Efficient heating with a controlled microwave field Rev. Sci. Instrum. 82, 124703 (2011) An induction heater device for studies of magnetic hyperthermia and specific absorption ratio measurements Rev. Sci. Instrum. 82, 114904 (2011) A comparison of microwave irradiation, electric, and hybrid heating for medical plastic-waste treatment J. Renewable Sustainable Energy 3, 033106 (2011) Additional information on Rev. Sci. Instrum. Here we describe a compact and efficient strontium oven well suited for laser-cooling experiments. Novel design solutions allowed us to produce a collimated strontium atomic beam with a flux of 1.0 × 10 13 s −1 cm −2 at the oven temperature of 450 • C, reached with an electrical power consumption of 36 W. The oven is based on a stainless-steel reservoir, filled with 6 g of metallic strontium, electrically heated in a vacuum environment by a tantalum wire threaded through an alumina multi-bore tube. The oven can be hosted in a standard DN40CF cube and has an estimated continuous operation lifetime of 10 years. This oven can be used for other alkali and alkaline earth metals with essentially no modifications.

Collimated dual species oven source and its characterisation via spatially resolved fluorescence spectroscopy

“…Our source employs an aligned microtube array to improve output beam collimation [8,9]. Although alternative methods for beam collimation have been demonstratedsee [10] for example -a microtube array offers a good balance between simplicity and effectiveness.…”

Effusive atomic oven nozzle design using an aligned microcapillary array

“…The absence of such constraint has been identified as a limiting factor for multichannel nozzles. 8 To the best of our knowledge no design that ensures this constraint has been published. In our nozzle we constrain the microcapillaries to be parallel by stacking them in a hexagonally packed lattice.…”

“…4 A non-exhaustive list of subsequent multichannel designs includes klystron grids, electrolytically etched plastic, photographically etched metal foil and short sections of hypodermic tubing compressed into an aperture. 2,[5][6][7][8] An alternate approach to the realization of long-lived effusive ovens is to use a recirculating design. Recirculating ovens recover atoms that would not enter the trapping region by cooling them to the liquid state and returning them to the oven reservoir.…”

A compact atomic beam based system for Doppler-free laser spectroscopy of strontium atoms

“…There are several limitations of using these designs. One of the disadvantage of the system in [5] is that, the system gets more complex and bulky if one is only interested in performing independent laser spectroscopy. The other disadvantage is that, the atoms that are being interrogated are illuminated simultaneously by a Zeeman slowing laser beam, which leads to light-shift in the measured spectrum.…”

“…This makes spectroscopy of these atoms challenging. In earlier works on Sr spectroscopy, one of the following methods were used for frequency stabilization: a) An atomic beam derived from a high-flux Sr atomic oven, used to load atoms into a Magnetooptic trap was interrogated by an orthogonal laser beam to obtain the fluorescence spectrum [5] or b) Performing Dopplerfree Saturated Absorption Spectroscopy (SAS) in a vapor cell [4]. There are several limitations of using these designs.…”