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Published August 15, 1983 | public
Journal Article Open

Superluminescent damping of relaxation resonance in the modulation response of GaAs lasers

Abstract

It is demonstrated experimentally that the intrinsic modulation response of injection lasers can be modified by reducing mirror reflectivities, which leads to suppression of relaxation oscillation resonance and a reduction of nonlinear distortions up to multi-GHz frequencies. A totally flat response with a 3-dB bandwidth of 5 GHz was obtained using antireflection coated buried heterostructure lasers fabricated on a semi-insulating substrate. Harmonic distortions were below 40 dB within the entire 3-dB bandwidth. These results are in accord with theoretical predictions based on an analysis which include the effects of superluminescence in the laser cavity.

Additional Information

© 1983 American Institute of Physics. Received 29 March 1983; accepted 23 May 1983. This research was supported by the Defense Advance Research Project Agency.

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