Pump-power dependence of transparency characteristics in semiconductor optical amplifiers

J. M. Tang, P. S. Spencer, P. Rees, K. A. Shore

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


A numerical investigation is performed of the characteristics of the pump-power dependent transparency carrier density of semiconductor optical amplifiers (SOAs) in pump-probe configurations. The simulations show good agreement with published experimental measurements. It is found that both gain compression due to two-photon absorption (TPA) and TPA carrier generation are crucial in determining the behavior of SOAs at transparency. In particular, a novel technique for significantly reducing the pump-power dependence of the transparency carrier density is proposed. Calculations also indicate that, by using negative frequency detuned probe and pump pulses, SOAs with fixed-transparency carrier densities can be obtained for a large pump energy range.

Original languageEnglish (US)
Pages (from-to)1462-1467
Number of pages6
JournalIEEE Journal of Quantum Electronics
Issue number12
StatePublished - Dec 2000

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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