3 papers
physics.optics2026
Precise measurement of the Kerr coefficient using phase-sensitive pump-probe hyperspectral imaging
J. K. Wahlstrand, C. D. Cruz
Phase-sensitive pump-probe hyperspectral imaging is a precise technique for absolute two-beam measurements of the optical Kerr coefficient (). The irradiance profile is charac…
physics.optics2026
Theory of the two-photon Franz-Keldysh effect and electric-field-induced bichromatic coherent control
J. K. Wahlstrand, J. E. Sipe
The effect of a constant electric field on two-photon absorption in a semiconductor is calculated using an independent-particle theory. The theoretical framework is an extension of…
physics.optics2024
Phase-sensitive pump-probe measurement of the complex nonlinear susceptibility of silicon across the direct band edge
C. D. Cruz, J. C. Stephenson, J. K. Wahlstrand
The nonlinear response of materials, an increasingly important aspect of light-matter interaction, can be challenging to measure in highly absorbing materials. Here, we introduce a…