Year: 2024
Type: article
Abstract: Interband Cascade Lasers (ICL) have matured into a versatile technological platform in the mid‐infrared spectral domain. To broaden their applicability even further, ongoing research pursues the emission of ultrashort pulses. The most promising approach is passive mode‐locking with a fast saturable absorber. However, despite vast attempts no passive mode‐locked ICL has been demonstrated up to date. In this study, pump‐probe measurements are conducted on the ICL gain, demonstrating that 60–70% of its dynamic behavior is characterized by a rapid recovery time of 2 ps. The findings explain why passive mode‐locking of ICLs has not succeeded so far, shedding a new light on ICL dynamics as strategies are proposed to overcome the current limitations.
Source: Laser & Photonics Review
Institutions: TU Wien, University of Vienna, Nanoplus (Germany)
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,650
Funders: Österreichische Nationalstiftung für Forschung, Technologie und Entwicklung, European Commission, Austrian Science Fund, Technische Universität Wien, Christian Doppler Forschungsgesellschaft, Bundesministerium für Digitalisierung und Wirtschaftsstandort, HORIZON EUROPE Framework Programme, European Research Council, HORIZON EUROPE European Innovation Council
OpenAlex ID: W4404045586