Terahertz quantum cascade lasers using resonant-phonon depopulation and metal-metal waveguides

Benjamin S. Williams; Sushil Kumar; Hans Callebaut; Stephen Kohen; Qing Hu; John L. Reno

doi:10.1117/12.530087

11 May 2004 Terahertz quantum cascade lasers using resonant-phonon depopulation and metal-metal waveguides

Benjamin S. Williams, Sushil Kumar, Hans Callebaut, Stephen Kohen, Qing Hu, John L. Reno

Author Affiliations +

Proceedings Volume 5365, Novel In-Plane Semiconductor Lasers III; (2004) https://doi.org/10.1117/12.530087
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States

Abstract

The recent extension of quantum cascade lasers (QCLs) from the mid-infrared to the terahertz frequency range (1-10 THz) promises to help address the relative lack of compact, coherent radiation sources in this spectral regime. We report our recent development of terahertz QCLs based on a resonant phonon depopulation scheme coupled with high-confinement, low-loss, metal-metal waveguides for mode confinement. A 3.2 THz laser (λ≈ 93.4 μm) is presented that operates in continuous wave mode up to a temperature of 93 K and up to 133 K in pulsed mode. Also presented is a 2.1 THz laser (λ ≈ 141 μm) that lases up to 40 K in continuous wave mode and 72 K in pulsed mode.

Citation Download Citation

Benjamin S. Williams, Sushil Kumar, Hans Callebaut, Stephen Kohen, Qing Hu, and John L. Reno "Terahertz quantum cascade lasers using resonant-phonon depopulation and metal-metal waveguides", Proc. SPIE 5365, Novel In-Plane Semiconductor Lasers III, (11 May 2004); https://doi.org/10.1117/12.530087

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