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  1. Article

    Open Access

    Thermopile detector of light ellipticity

    Polarimetric imaging is widely used in applications from material analysis to biomedical diagnostics, vision and astronomy. The degree of circular polarization, or light ellipticity, is associated with the S3 Sto...

    Feng Lu, Jongwon Lee, Aiting Jiang, Seungyong Jung… in Nature Communications (2016)

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  2. Article

    Open Access

    Spectroscopic Study of Terahertz Generation in Mid-Infrared Quantum Cascade Lasers

    Terahertz quantum cascade laser sources based on intra-cavity difference-frequency generation are currently the only room-temperature mass-producible diode-laser-like emitters of coherent 1–6 THz radiation. De...

    Yifan Jiang, Karun Vijayraghavan, Seungyong Jung, Aiting Jiang… in Scientific Reports (2016)

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  3. No Access

    Article

    Broadly tunable monolithic room-temperature terahertz quantum cascade laser sources

    Electrically pumped room-temperature semiconductor sources of tunable terahertz radiation in 1–5 THz spectral range are highly desired to enable compact instrumentation for THz sensing and spectroscopy. Quantu...

    Seungyong Jung, Aiting Jiang, Yifan Jiang, Karun Vijayraghavan… in Nature Communications (2014)

  4. Article

    Carrier Lifetime Measurements in Long-Wave Infrared InAs/GaSb Superlattices Under Low Excitation Conditions

    Minority carrier lifetime in long-wave infrared (LWIR) type II InAs/GaSb superlattices was studied using the optical modulation response (OMR) technique in wide ranges of excitation and temperature. The measur...

    Ding Wang, Dmitri Donetsky, Seungyong Jung… in Journal of Electronic Materials (2012)

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  5. No Access

    Article

    GaSb-Based Mid-Infrared Single Lateral Mode Lasers Fabricated by Selective Wet Etching Technique with an Etch Stop Layer

    We have demonstrated a wet etching technique for fabrication of narrow ridge lasers. Precise control over etching depth and ridge width was realized by introducing an etch stop layer into a laser structure and...

    Seungyong Jung, Gela Kipshidze, Rui Liang… in Journal of Electronic Materials (2012)