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High-speed 980 nm vertical cavity surface emitting lasers with a multi-oxide layer structure for single-mode operation

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2 Author(s)
Al-Omari, A.N. ; Electron. Eng. Dept., Yarmouk Univ., Irbid, Jordan ; Lear, K.L.

High-speed, single transverse mode, oxide-confined, 980 nm vertical cavity surface emitting lasers with a multi-oxide layer structure to maintain single-mode operation with increased oxide aperture diameter are fabricated and characterised. Lasers with an 8 μm-diameter oxide aperture operated in a single fundamental mode under continuous wave condition with a side-mode suppression ratio of 32 dB at current densities up to 20 times threshold and exhibited a 3 dB modulation frequency bandwidth up to 13 GHz at a current density of only 10 kA/cm2. The threshold current and voltage were as low as 260 A and 1.45 V, respectively.

Published in:

Optoelectronics, IET  (Volume:5 ,  Issue: 2 )