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(ρf/ρi)/ln(Ni/Nf).
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical Review Letters|
|State||Published - Mar 25 2002|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)