I recently came upon this fantastic technique through reading, but I found it difficult to comprehend how it operates. Would the ions not initially heat up if photons were pumped in? In what way does the energy loss exceed the input? Many thanks ahead of time.
In: Physics
Doppler cooling uses laser light tuned slightly below an ion’s resonance frequency. When ions absorb these photons, they slow down, losing kinetic energy. The absorbed energy is re-emitted in all directions, leading to an overall cooling effect. Alternatives include evaporative cooling and sympathetic cooling. Hope this helps to you.
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