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Based on a robust THz gain medium that rapidly depopulates the lower state using resonant LO-phonons and a novel metal-metal waveguide structure for mode confinement, we have developed THz quantum cascade lasers with many performance records. These include but not limited to: pulsed operating temperature of ~170 K, the highest CW operating temperature of 117 K, long wavelength of ~207 mum, and the...
Based on a robust THz gain medium that rapidly depopulates the lower state using resonant LO-phonons and a novel metal-metal waveguide structure for mode confinement, we have developed THz quantum- cascade lasers with many performance records. These include but not limited to: the highest pulsed operating temperature of-170 K, the highest CW operating temperature of 117 K, the longest wavelength of-190...
We provide an overview of terahertz quantum cascade lasers based on resonant-phonon depopulation and metal-metal waveguides, including two-phonon resonant-phonon depopulation schemes, long wavelength operation, and real time terahertz imaging.
Based on a robust THz gain medium that rapidly depopulates the lower state using resonant LO-phonons and a novel metal-metal waveguide structure for mode confinement, we have developed THz quantum-cascade lasers with many performance records. These include but not limited to: the highest pulsed operating temperature of ~170 K, the highest CW operating temperature of 117 K, long wavelength of ~190...
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