For experiments that need ultra-precise dimensions and control over atoms– assume two-photon atomic clocks, cold-atom interferometer sensing units and quantum entrances– lasers are the modern technology of option, the much more spectrally pure (producing a solitary color/frequency), the far better. Standard lab-scale laser modern technology presently attains this ultra low-noise, steady light through cumbersome, pricey tabletop systems developed to produce, harness and release photons within a slim spooky variety.
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