3 papers
physics.optics2025
Overcoming the indirect bandgap: efficient silicon emission via momentum-expanded photonic states
Aleksei I. Noskov, Alexander B. Kotlyar, Liat Katrivas +6
Silicon's inherently indirect bandgap severely limits its radiative efficiency, posing a fundamental challenge to the development of practical silicon-based light sources. While st…
physics.optics2024
Two-photon absorption in silicon using real density matrix approach
David Ziemkiewicz, David Knez, Evan P. Garcia +7
Two-photon absorption in indirect gap semiconductors is an frequently encountered, but not well-understood phenomenon. To address this, the Real Density Matrix Approach is applied…
physics.optics2024
Photon momentum enabled light absorption in bulk silicon
Sergey S. Kharintsev, Aleksey I. Noskov, Elina I. Battalova +6
Photons do not carry sufficient momentum to induce indirect optical transitions in semiconducting materials such as silicon, necessitating the assistance of lattice phonons to cons…