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High-Power Quantum-Dot Superluminescent LED With Broadband Drive Current Insensitive Emission Spectra Using a Tapered Active Region

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6 Author(s)
Zhang, Z.Y. ; Univ. of Sheffield, Sheffield ; Hogg, R.A. ; Jin, P. ; Choi, T.L.
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High-power and broadband quantum-dot (QD) superluminescent light-emitting diodes are realized by using a combination of self-assembled QDs with a high density, large inhomogeneous broadening, a tapered angled pump region, and etched V groove structure. This broad-area device exhibits greater than 70-nm 3-dB bandwidth and drive current insensitive emission spectra with 100-mW output power under continuous-wave operation. For pulsed operation, greater than 200-mW output power is obtained.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 10 )

Date of Publication:

May15, 2008

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