Optical gain reduction caused by nonrelevant subbands in narrow-period terahertz quantum cascade laser designs

HIGHLIGHTS

• who: Li Wang from the RIKEN Center forNanjing University have published the paper: Optical gain reduction caused by nonrelevant subbands in narrow-period terahertz quantum cascade laser designs, in the Journal: Scientific Reports Scientific Reports
• what: Two-well resonant-phonon designs with different depopulation energy is studied based on a NEGF model, it shows that the HLS is probable to play different roles on population inversion and optical gain, that minor effecting on reducing the former one, but significantly reducing the latter one.

SUMMARY

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