A vertical-external-cavity surface-emitting-laser (VECSEL) is a small semiconductor laser similar to a vertical-cavity surface-emitting laser (VCSEL). VECSELs are used primarily as near infrared devices in laser cooling and spectroscopy, but have also been explored for applications such as telecommunications.
Read more about Vertical-external-cavity Surface-emitting-laser: Comparisons With VCSELs, Semiconductor Gain
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