The N-photon absorption coefficient of a direct-semiconductor is calculated under the influence of a DC-field. For N>2 the system presents the same structure as the Linear Franz-Keldysh effect, oscillations for hΩ>Eg/2, and tunneling for hΩ<Eg/2.
© 2005 Optical Society of America
H. Garcia, "Tunneling Assisted Two-Photon Absoprtion: The Nonlinear Franz-Keldysh Effect," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2005), paper JWB81.
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