Paper 13344-24
Paper 13344-24
High power single mode interband cascade lasers (Invited Paper)
28 January 2025 • 2:00 PM - 2:30 PM PST | Moscone Center, Room 206 (Level 2 South)
Abstract
Interband cascade lasers (ICLs) are promising light sources for mid-infrared (MIR) sensing applications in the 3-6 μm range. Since their first room temperature continuous-wave (cw) operation in 2008, achieving a 0.7% wall-plug efficiency (WPE), significant advancements have been made to increase output power. Improvements include intrinsic modifications, such as optimizing the active region design and balancing carrier densities, and extrinsic optimizations in chip design and fabrication. Combining these strategies has resulted in the creation of single-mode GaSb-based ICLs that deliver over 50 mW of output power and achieve a 9% wall-plug efficiency (WPE) in continuous-wave (cw) operation at an emission wavelength of 3.3 µm. These advancements position ICLs as strong contenders for mid-infrared (MIR) sensing applications, providing both high efficiency and reliable performance at room temperature.
Presenter
nanoplus Nanosystems and Technologies GmbH (Germany)
Dr. Johannes Koeth co-founded nanoplus in 1998 and has been its managing director since. He earned his PhD in physics from Julius Maximilians University of Wuerzburg (JMU), specializing in molecular beam epitaxy (MBE), semiconductor lasers, and VCSELs. Believing in the potential of semiconductor lasers to revolutionize the gas sensing market, his vision materialized as distributed feedback lasers expanded new technologies and markets. In 2017, Dr. Koeth opened a sales office in Boulder, Colorado, USA, where he serves as CEO. To advance semiconductor laser processing, he co-founded Sensalight Technologies GmbH in 2020, focusing on volume production for the automotive sector.