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High-Speed VCSELs with Strong Confinement of Optical Fields and Carriers

Erik Haglund (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Petter Westbergh (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Johan S. Gustavsson (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Emanuel P. Haglund (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Anders Larsson (Institutionen för mikroteknologi och nanovetenskap, Fotonik)
Journal of Lightwave Technology (0733-8724). Vol. 34 (2016), 2, p. 269-277.
[Artikel, refereegranskad vetenskaplig]

We present the design, fabrication, and performance of our latest generation high-speed oxide-confined 850-nm verticalcavity surface-emitting lasers. Excellent high-speed properties are obtained by strong confinement of optical fields and carriers. Highspeed modulation is facilitated by using the shortest possible cavity length of one half wavelength and placing oxide apertures close to the active region to efficiently confine charge carriers. The resulting strong current confinement boosts internal quantum efficiency, leading to low threshold currents, high wall-plug efficiency, and state-of-the-art high-speed properties at low bias currents. The temperature dependent static and dynamic performance is analyzed by current-power-voltage and small-signal modulation measurements.

Nyckelord: Dynamics, high efficiency, high-speed modulation, optical interconnects, semiconductor lasers, vertical-cavity surface-emitting lasers (VCSELs)



Denna post skapades 2016-03-23. Senast ändrad 2016-07-28.
CPL Pubid: 233624

 

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