Laser light source and laser projector with laser light source
AssigneeQ.Ant GmbH
InventorsMichael Foertsch, Stefan Hengesbach
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Abstract
A laser light source includes a nonlinear optical medium and a pump laser source configured to generate a pump laser beam to form a signal beam and an idler beam in the nonlinear optical medium by parametric down conversion. The laser light source further includes a seed light source configured to generate a seed signal beam and/or a seed idler beam having a coherence length lesser than a coherence length of the pump laser beam, and a superpositioning device configured to superposition the seed signal beam and/or the seed idler beam with the pump laser beam for joint coupling into the nonlinear optical medium.
Claims21
A laser light source comprising:
- a nonlinear optical medium,
- a pump laser source configured to generate a pump laser beam to form a signal beam and an idler beam in the nonlinear optical medium by parametric down conversion,
- a seed light source configured to generate a seed signal beam and/or a seed idler beam having a coherence length less than a coherence length of the pump laser beam,
- a superpositioning device configured to superposition the seed signal beam and/or the seed idler beam with the pump laser beam for joint coupling into the nonlinear optical medium, and
- a control device configured to adjust a power of the seed signal beam and/or of the seed idler beam so as to adjust the coherence length of the signal beam coupled out from the nonlinear optical medium.
Dependencies are inferred from the claim text.