期刊
APPLIED PHYSICS LETTERS
卷 97, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3489104
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资金
- European Community [224338]
- Royal Academy of Engineering/EPSRC
We report temperature-dependent absorption recovery times in an InAs p-i-n ridge waveguide quantum-dot modulator under low reverse bias, investigated via subpicosecond pump-probe measurements. The measured decrease in absorption recovery time with increasing temperature (293-319 K) is in excellent agreement with a thermionic emission model. A similar trend in pulse duration with increasing temperature is also observed from a two-section mode-locked quantum-dot laser fabricated from a similar epitaxial structure. These measurements confirm the key role of the absorber recovery time in the reduction in the pulses generated by two-section mode-locked quantum-dot lasers, both at room and elevated temperatures. (C) 2010 American Institute of Physics. [doi:10.1063/1.3489104]
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