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VERTICAL CAVITY SURFACE EMITTING LASER (VCSEL)

  • US 20020075929A1
  • Filed: 12/19/2000
  • Published: 06/20/2002
  • Est. Priority Date: 12/19/2000
  • Status: Active Grant
First Claim
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1. A vertical cavity surface emitting laser emitting light at a first wavelength longer than a second wavelength of the light used for optically pumping it comprising a substrate supporting a stack of layers, the stack comprising in turn:

  • a first section forming a first mirror highly reflective of the light of the second wavelength;

    a second section forming the cavity of a laser emitting at the second wavelength and including the gain medium of the laser;

    a third section forming a second mirror reflective of the light of the second wavelength and partially transmissive of light of said second wavelength, the first, second, and third sections forming a vertical cavity surface emitting laser emitting at the second wavelength;

    a fourth section forming a mirror highly reflective of the first wavelength and transmissive to light of the second wavelength;

    a fifth section forming the cavity of the laser emitting at the first wavelength and including the gain medium of such laser; and

    a sixth section forming a mirror reflective of the first and second wavelengths and partially transmissive of light of the first wavelength, characterized in that the third and sixth are spaced to establish a standing wave of the second wavelength therebetween and that the first, second, third, fourth, and fifth sections are epitaxial with a substrate.

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