Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 15, Issue 8, Pages 1044-1046Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2003.814896
Keywords
atmospheric window; free-space; intracavity modulator; optical data transmission; quantum-cascade (QC) laser
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We report a quantum-cascade laser monolithically integrated with an intracavity modulator which could be operated up to 1 GHz. In contrast to earlier approaches, where the radio frequency (RF) modulation signal was supplied to the entire cavity length of the laser structure, we drive only a relatively small 375-mum-long section,of the cavity. At the same time, a quasi-contiunous-wave signal was supplied to the remaining 1125-mum-long section. This modulation scheme resulted in smaller parasitic capacitance effects than what we reported previously, and enabled us to work with lower RF voltages and currents.
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