Positions are available for Postdocs, Graduate Students, and Undergraduate Students interested in working in an upstart AMO research lab. Please contact Prof. Leanhardt for more information.
The 2008 Michigan Quantum Summer School, June 16 – 27, 2008.
The 2009 Michigan Physics Olympiad, May 9, 2009. Physics Bowl Demonstration Quiz: slides
The 2008 Michigan Physics Olympiad, May 3, 2008. Physics Bowl Demonstration Quiz: slides
Optical Vortex Phase Plate. Phase plates capable of creating optical vortices with winding numbers 1 and 2 at a variety of wavelengths.
1S0 → 3D2 Two-Photon Transition in Yb. Detected 556 nm fluorescence count rate for the Yb 1S0 → 3D2 two-photon transition at 808.017 nm. The detected fluorescence comes from the decay path: 3D2 → 3P1 → 1S0.
When it rains, it pours... Emily braves the lab flood with her trusty umbrella.
Laser Induced Fluorescence Spectroscopy Setup. (top view) An atomic and/or molecular beam expands into vacuum through a conical nozzle (far right), passes through a skimmer, and enters a laser induced fluorescence spectroscopy chamber (black). The spectroscopy laser enters through the windows on top and bottom of the image and fluorescence photons are imaged below the setup onto a photomultiplier tube (PMT).
[click image to download poster pdf] J. Lee and A.E. Leanhardt, A Supersonic Gas Jet Seeded with Tungsten Carbide Molecules, Midwest Cold Atom Workshop, November 15, 2008.
[click image to download poster pdf] Y.S. Rumala, E.A. Alden, and A.E. Leanhardt, Construction of an Ytterbium Laser Cooling and Trapping Apparatus, Midwest Cold Atom Workshop, November 15, 2008.
Atomic Tungsten Absorption Spectroscopy. Absorption spectroscopy on the 7S3 → 7P4 transition of tungsten atoms near a resistively heated filament at ~3000 K.
WC Spectroscopy Laser. Frequency-doubled Ti:Saph setup (867 nm → 433.5 nm) for tungsten carbide molecular spectrscopy.
Red ↔ Green LEDs. Fundamental theorem of electronics: all circuits will expand to fill their proto boards.
DC Electric Quadrupole Waveguide. Quadrupole electrodes designed to guide ground state tungsten carbide (WC) molecules. For scale, the electrodes are mounted on an 8" CF flange.
Yb atomic beam. Ytterbium beamline with Zeeman slower and MOT coils installed showing (right) 399 nm fluorescence from the Yb atomic beam arriving in the cooling and trapping region.
[click image to download poster pdf] J. Lee, R. Paudel, and A.E. Leanhardt, A Supersonic Gas Jet Seeded with Tungsten Carbide Molecules, ICAP, July 27 – Aug. 1, 2008.
Spin-flip Zeeman slower. Magnetic field profile testing of a spin-flip Zeeman slower for Yb atoms. Yb atoms will travel from right to left through the coils against a counter-propagating 399 nm laser beam.
W+CH4 → WC + 2H2. Quadrupole mass spectrum of tungsten atoms (mass 182-186) and tungsten carbide molecules (mass 194-198) formed by evaporating a tungsten filament in the presence of methane gas.
[click image to download poster pdf] J. Lee, R. Paudel, and A.E. Leanhardt, A Supersonic Gas Jet Seeded with Tungsten Atoms, Michigan Quantum Summer School, June 16 – 27, 2008.
[click image to download poster pdf] Y.S. Rumala, C. Li, and A.E. Leanhardt, Construction of a Yb Laser Cooling and Trapping Apparatus, Michigan Quantum Summer School, June 16 – 27, 2008.
Ar + W supersonic beam. A tungsten filament is resistively heated to over 3000 K in the presence of an argon buffer gas. The resulting W vapor is entrained in a supersonic jet formed by allowing the argon gas to flow through a nozzle into vacuum. For beam diagnostics, the resulting Ar + W supersonic jet sputters onto copper foils (shown above) placed at various distances downstream.
Yb atomic beam. Ytterbium metal is vaporized in vacuum by running current through a tantalum heating tube (electrical feedthru shown at far left). The atoms are probed with resonant laser light at 399 nm and absorption signals are shown in the inset for Yb atoms in the oven chamber (blue) and trapping chamber (yellow).
