ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
A tuning range of 200 nm has been achieved with a step-graded multiquantum well InGaAs/InP laser in an external-cavity configuration. Continuous, single-mode lasing could be observed from 1440 to 1640 nm. Depending on the current density, the laser can operate both at the n=1 and n=2 quantized states. At low current density, the n=1 state gives higher gain, whereas for higher carrier densities, the n=2 level dominates. This gives rise to a flat gain profile and an extended operating range, in fact, the widest tuning range reported so far for semiconductor lasers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.102672
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