CaIon.md

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Ca Ion Energy Level

Groud level: $$^2S_{1/2}$$

Doppler Cooling

• 397nm major pump, dipole.
• $$^2P_{1/2}$$ lifetime = 7ns: so short that velocity could be regarded as constant
  • 6.5% probability to $$^2D_{3/2}$$
  • 93.5% back to g.s.
• 866nm repumps $$^2D_{3/2}$$ to $$^2P_{1/2}$$