Room-temperature waveguide-integrated photodetector using bolometric effect for mid-infrared spectroscopy applications.

ABSTRACT: Waveguide-integrated mid-infrared (MIR) photodetectors are pivotal components for the development of molecular spectroscopy applications, leveraging mature photonic integrated circuit (PIC) technologies. Despite various strategies, critical challenges still remain in achieving broadband photoresponse, cooling-free operation, and large-scale complementary-metal-oxide-semiconductor (CMOS)-compatible manufacturability. To leap beyond these limitations, the bolometric effect - a thermal detection mechanism - is introduced into the waveguide platform. More importantly, we pursue a free-carrier absorption (FCA) process in germanium (Ge) to create an efficient light-absorbing medium, providing a pragmatic solution for full coverage of the MIR spectrum without incorporating exotic materials into C

SUBMITTER: Shim J 

PROVIDER: S-EPMC11920593 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature