SURF

Diego A Pea

Characterization of Optical Pumping of Ti Beam into a Metastable State

Laser cooling and trapping consists of using lights momentum to slow down and eventually confine atoms to small regions of space using light and magnetic fields. These techniques have been demonstrated with many elements in the periodic table, yet most transition metals are still to be addressed. A current effort in the Stamper-Kurn group seeks to implement laser cooling on titanium, eventually trapping and cooling it to quantum degeneracy. Cooling titanium requires that atoms exist in the a5F5 metastable state, an atomic internal state with energy higher than the ground state but with a relatively long lifetime compared to an excited state. One method of creating metastable titanium atoms is by optically pumping titanium from the ground state a3F4 to the y5G5 excited states where atoms can decay to the metastable state. My project focuses on characterizing the efficiency of such method of optical pumping using 379 nm and 844 nm light. This includes the construction and characterization of the 844 nm light beam which will be generated using a tunable external cavity diode laser

Message to Sponsor

The SURF program has been an amazing experience in which I built connections, challenged my limits, and learned many skills that I will continue to use throughout my life. This summer empowered me to finish my undergraduate career strongly, continue doing cutting-edge research, and pursue a higher education. I truly appreciate the funding that the Kay & Shaw fund has provided, which allowed me to go through this unique experience. Undergraduate research is one of the highlights of my career at Berkeley, and I am aware that it wouldn't be possible without the generosity of donors like the Kay & Shaw fund. I am forever grateful to you.
  • Major: Physics
  • Sponsor: Kay & Shaw Fund
  • Mentor: Dan Stamper-Kurn