Physical Review Letters
We theoretically predict and experimentally demonstrate inhibition of linear absorption for phase and group velocity mismatched second- and third-harmonic generation in strongly absorbing materials, GaAs, in particular, at frequencies above the absorption edge.
A 100-fs pump pulse tuned to 1300 nm generates 650 and 435 nm second- and third-harmonic pulses that propagate across a 450−μm-thick GaAs substrate without being absorbed.
We attribute this to a phase-locking mechanism that causes the pump to trap the harmonics and to impress on them its dispersive properties.
113905-1 to 113905-4
Copyright © 2008, American Physical Society
American Physical Society
Centini, Marco; Roppo, Vito; Fazio, Eugenio; Pettazzi, Federico; Sibilia, Concita; Haus, Joseph W.; Foreman, John V.; Akozbek, Neset; Bloemer, Mark J.; and Scalora, Michael, "Inhibition of Linear Absorption in Opaque Materials Using Phase-Locked Harmonic Generation" (2008). Electrical and Computer Engineering Faculty Publications. 287.
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