A slow atom source using a collimated effusive oven and a single-layer variable pitch coil Zeeman slower.

Area of Science:

• Atomic Physics
• Quantum Optics
• Experimental Physics

Background:

• Magneto-optical traps (MOTs) are crucial for laser cooling and trapping neutral atoms.
• Efficiently loading MOTs requires slow atom beams.
• Existing slow atom sources can be complex or lack robustness.

Purpose of the Study:

• To present a simple and reliable slow atom source for rubidium MOTs.
• To detail the design and performance of a novel Zeeman slower.
• To achieve a high flux of slow atoms suitable for MOT loading.

Main Methods:

• Construction of an effusive oven with a long, heated collimation tube.
• Implementation of a Zeeman slower with a single-layer coil of variable winding pitch.
• External placement of heating elements and thermocouples for durability and ease of repair.
• Analytical fitting of magnetic field profiles to determine optimal coil pitch.

Main Results:

• The source produces a slow atom beam with velocities around 35 m/s.
• Achieved atomic flux up to 2 x 10^10 cm^-2 s^-1 at 200 degrees C.
• The constructed Zeeman slower coil accurately reproduces the desired magnetic field profile.
• External components enhance system longevity and simplify maintenance.

Conclusions:

• The described slow atom source is simple, robust, and effective for loading rubidium MOTs.
• The novel Zeeman slower design offers advantages in construction simplicity and magnetic field control.
• This source provides a valuable tool for experiments requiring high-flux, slow atomic beams.