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Enhanced operating temperature in terahertz quantum cascade lasers based on direct phonon depopulation

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Room temperature operation of terahertz quantum cascade lasers (THz QCLs) has been a long-pursued goal to realize compact semiconductor THz sources. In this paper, we report on improving the maximum… Click to show full abstract

Room temperature operation of terahertz quantum cascade lasers (THz QCLs) has been a long-pursued goal to realize compact semiconductor THz sources. In this paper, we report on improving the maximum operating temperature of THz QCLs to ∼ 261 K as a step toward the realization of this goal.

Keywords: cascade lasers; quantum cascade; terahertz quantum; temperature; operating temperature

Journal Title: Applied Physics Letters
Year Published: 2023

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