A 140 ps Optical Pulse Generation by Field-Induced Gain Switching in a Photo-Excited Quantum Well Laser
- 1 February 1987
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 26 (2A), L117
- https://doi.org/10.1143/jjap.26.l117
Abstract
Modulation of light output power by field-induced gain switching in a photo-excited AlGaAs graded-index-separate-confinement heterostructure quantum well laser is, for the first time, demonstrated at low temperature (∼40 K). The modulation is caused by changes in spatial separation, e.g., overlapping of electrons and holes in the GaAs well and graded barrier layers with electric field perpendicular to the hetero-junction plane. An optical pulse as narrow as 140psec full width at half-maximum is generated.Keywords
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