Role of free-carrier interaction in strong-field excitations in semiconductors

Hollinger R, Haddad E, Zapf M, Shumakova V, Herrmann P, Roeder R, Uschmann I, Reisloehner U, Pugzlys A, Baltuska A, Legare F, Zuerch M, Ronning C, Spielmann C, Kartashov D (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Physical Review B American Physical Society

Book Volume: 104

Article Number: 035203

Journal Issue: 3

DOI: 10.1103/PhysRevB.104.035203

Abstract

The interaction of laser pulses with condensed matter forms the basis of light-wave-driven electronics potentially enabling tera- and petahertz switching rate applications. Carrier control using near- and midinfrared pulses is appealing for integration into existing platforms. Toward this end, a fundamental understanding of the complexity of phenomena concerning sub-band-gap driven semiconductors such as high harmonic generation, carrier excitation due to multiphoton absorption, and interband tunneling as well as carrier-carrier interactions due to strong acceleration in infrared transients is important. Here, stimulated emission from polycrystalline ZnO thin films for pump wavelengths between 1.2 μm (1 eV) and 10 μm (0.12 eV) is observed. Contrary to the expected higher intensity threshold for longer wavelengths, the lowest threshold pump intensity for stimulated emission is obtained for the longest pump wavelength corroborating the importance of collisional excitation upon intraband electron acceleration.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) The Énergie Matériaux Télécommunications (Energy Materials Telecommunications) Research Centre CA Canada (CA) Technische Universität Wien / Vienna University of Technology AT Austria (AT)

How to cite

APA:

Hollinger, R., Haddad, E., Zapf, M., Shumakova, V., Herrmann, P., Roeder, R.,... Kartashov, D. (2021). Role of free-carrier interaction in strong-field excitations in semiconductors. Physical Review B, 104(3). https://doi.org/10.1103/PhysRevB.104.035203

MLA:

Hollinger, Richard, et al. "Role of free-carrier interaction in strong-field excitations in semiconductors." Physical Review B 104.3 (2021).

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