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arXiv · 0804.4732

On the Inhibition of Linear Absorption in Opaque Materials Using Phase-Locked Harmonic Generation

Marco Centini·Vito Roppo·Eugenio Fazio·Federico Pettazzi·Concita Sibilia·Joseph W. Haus·John V. Foreman·Neset Akozbek·Mark J. Bloemer·Michael Scalora
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Abstract

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 1300nm generates 650nm and 435nm second and third harmonic pulses that propagate across a 450 micron-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 them with its dispersive properties.

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Marco Centini, Vito Roppo, Eugenio Fazio, Federico Pettazzi, Concita Sibilia, Joseph W. Haus, John V. Foreman, Neset Akozbek, Mark J. Bloemer, Michael Scalora. 2008-04-30. On the Inhibition of Linear Absorption in Opaque Materials Using Phase-Locked Harmonic Generation. https://doi.org/10.1103/physrevlett.101.113905

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