Wavelength Tunability of the Transistor-Injected Quantum Cascade Laser

摘要

Wavelength Tunability of the transistor-injected quantum cascade laser (TI-QCL) is analyzed by calculating the spectral gain cross section under different electric fields. Calculated results show that the tunability of the TI-QCL ranges from 10.61 μm to 9.56 μm and from 15.31 μm to 12.34 μm for different optical transitions as the electric field varies from 42 kV/cm to 62 kV/cm, agreeing well with the results by transition dipole moments analysis.