Zhi-Yong Tan, Wen-Jian Wan, Jun-Cheng Cao. Research progress in terahertz quantum-cascade lasers and quantum-well photodetectors[J]. Chinese Physics B, 2020, 29(8):
- Chinese Physics B
- Vol. 29, Issue 8, (2020)
Fig. 1. Progress of the maximum operation temperature in pulse mode (red) and CW mode (blue).
Fig. 2. Schematic diagram of working principle of terahertz QCL.
Fig. 3. Schematic diagram for (a) SI-SP and (b) MM waveguides.
Fig. 4. Schematic conduction band edge profile of a GaAs/AlGaAs terahertz QWP under zero (above) and finite (below) bias.
Fig. 5. The comparison of the emission spectra of five THz QCLs and the photocurrent spectrum of a THz QWP.
Fig. 6. The imaging, positioning, and spectral analysis process of hazardous substances.
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Table 1. The progress of GaAs/AlGaAs-based terahertz QCLs.
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Table 2. Comparison of radiation power of terahertz sources.
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Table 3. The progress of GaAs/AlGaAs-based terahertz QWPs.
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