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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper CWR3

Variation of high-frequency laser parameters with well number in strained-layer QW lasers

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Abstract

To date, the high frequency performance of strained-layer quantum well lasers has not yet approached the ultra-high bandwidths predicted for these devices several years ago.1 Since then, several problems peculiar to quantum well lasers have arisen that have limited most reported 3-dB bandwidths to the low twenties of chz.2 These problems include evidence of extreme damping in quantum well lasers3, low frequency roll-off caused by poor carrier transport across the quantum well gain region,4 and the disappointing result that the experimental differential gain is usually less than its theoretically derived value. We show that the first two of these problems have been overcome by good laser design, but that the third remains an on-going challenge.

© 1992 Optical Society of America

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