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Surface emitting laser device with a vertical cavity

  • US 5,781,575 A
  • Filed: 01/02/1997
  • Issued: 07/14/1998
  • Est. Priority Date: 09/10/1993
  • Status: Expired due to Term
First Claim
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1. A surface emitting laser device with at least two active regions in one optical cavity, the optical cavity being vertical and vertically substantially confined by or limited by two dielectrical reflecting devices, wherein a vertical optical standing wave pattern is created in the optical cavity, the active regions are electrically connected in series and arranged in horizontal planes corresponding to maximum electro-optical field strength and the voltage drop across the active regions is proportional to the number of active regions of the device, electrical contact regions are arranged in horizontal planes corresponding to minimum electro-optical field strength, and the device emits laser light generated in one single beam that comprises only one mode.

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