Laser light source and laser projector with laser light source
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United States of America Patent
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Sep 10, 2024
Grant Date -
May 27, 2021
app pub date -
Jan 27, 2021
filing date -
Jul 27, 2018
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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.
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