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High-speed vertical-cavity surface emitting laser

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8 Author(s)
Shtengel, G. ; Dept. of Electr. Eng., Colorado State Univ., Fort Collins, CO, USA ; Temkin, H. ; Brusenbach, P. ; Uchida, T.
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Planar, gain-guided vertical-cavity surface-emitting lasers (VCSELs) with a modulation bandwidth of 14 GHz are described. This bandwidth is reached at a drive current of only 8 mA. The intrinsic bandwidth of these devices is estimated to be greater than 50 GHz. Nonlinear light-current characteristics of these lasers may lead to a high level of nonlinear harmonic distortion of the high-frequency output. It is shown that the relative intensity of the second-harmonic response decreases rapidly at higher drive currents, in agreement with a phenomenological model based on the DC characteristics of the laser.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:5 ,  Issue: 12 )