As the injection current is increased the laser heats up and there is an alteration in the topography of the laser which alters the light distribution.
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NSOM light distribution |
AFM 20.5 mA |
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AFM |
collage of AFM with light distribution |
AFM & Light Distribution
Illustrated below: Distributed feedback laser structure, light distribution and collage of structure and light distribution at a low injection current.
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AFM |
AFM |
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light distribution 20.5 mA |
collage AFM/light distribution |
Near-field optics provides the capability to predict the near-field from far-field methods.
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Far-Field |
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Near-Field |
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The Distributed Feedback Laser AFM & NSOM Image at Higher Injection Currents (22.5 mA)
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3D NSOM |
collage of AFM with light distribution |
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Topography at 20.5mA
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Topography at 50mA (for comparison)
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NSOM Light Distribution
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Collage of AFM with Light Distribution
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As the injection current is increased the laser heats up and there is an alteration in the topography of the laser which alters the light distribution.
