Work

State-of-the-Art Emerging Materials under a Terahertz Emission Spotlight

Year: 2025

Type: article

Abstract: The generation and manipulation of photoinduced transient currents, as well as characterization of the emission of resultant electromagnetic waves, are crucial for the design and coherent operation of advanced optoelectronic devices. An ultrafast optical pulse-driven transient photocurrent lasts for picosecond time scale bursts as a terahertz (THz) emission. The emitted radiation, permitted by the intrinsic structural properties of materials, is remarkably enriched with information on associated ultrafast transients and can potentially explore microscopic insights into fascinating nonlinear dynamical characteristics. This review aims to understand terahertz (THz) emission and the underlying ultrafast photophysics in contemporary matter systems. Since THz emission is the manifestation of photocurrents and induced dynamic polarization that sustain a picosecond time scale, it offers a noncontact and noninvasive platform for studying such ultrafast phenomena.

Source: ACS Materials Letters

DOI: 10.1021/acsmaterialslett.5c00915

Authors: Srabani Kar, Kaveh Delfanazari, Yu-Chieh Wen

Institutions: Indian Institute of Technology Madras, Indian Institute of Technology Hyderabad, University of Glasgow, Institute of Physics, Academia Sinica

Language: English

Topic: Terahertz technology and applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Department of Science and Technology, Ministry of Science and Technology, India

Award: G4206953905