All-optical production of a degenerate Fermi gas

S. R. Granade, M. E. Gehm, Kenneth O'Hara, J. E. Thomas

Research output: Contribution to journalArticlepeer-review

260 Scopus citations


Direct evaporation in a CO2 laser trap was done to achieve degeneracy in a mixture of the two lowest hyperfine states of 6Li, yielding the first all optically produced degenerate Fermi gas. Degeneracy was obtained by forced evaporation, accomplished by continuously lowering the trap depth and then adiabatically recompressing to full depth. The results achieved showed high evaporation efficiency χ ≡ ln(ρfi)/ln(Ni/Nf).

Original languageEnglish (US)
Pages (from-to)1204051-1204054
Number of pages4
JournalPhysical Review Letters
Issue number12
StatePublished - Mar 25 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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