@misc{indiciae5a9b753e669b,
  title = {Terahertz Optical Gain Based on Intersubband Transitions in Optically-Pumped Semiconductor Quantum Wells: Coherent Pumped-Probe Interactions},
  author = {Liu, Ansheng and Ning, Cun-Zheng},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/20000069001},
  note = {Source identifier: 20000069001}
}