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kleinbl00  ·  3653 days ago  ·  link  ·    ·  parent  ·  post: Self-sweeping laser could dramatically shrink 3D mapping systems

Basically, they've tuned the grid, the pumping frequency and the wavelength of the laser cavity so that it goes into harmonic oscillation. By doing this, they can alter the wavelength of the light that comes out the other side of the grating. It's pretty clever.