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Carrier Cooling Accelerated by Photon Confinement in Nonlinear Photonic Band Structure
Author(s) -
Ogawa K.,
Matsui Y.,
Ouchi K.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199711)204:1<566::aid-pssb566>3.0.co;2-b
Subject(s) - femtosecond , photonics , materials science , optoelectronics , scattering , absorption (acoustics) , saturation (graph theory) , two photon absorption , photon , optics , nonlinear optics , figure of merit , physics , laser , mathematics , combinatorics
Carrier dynamics in absorption saturation in an InP/InGaAs nonlinear photonic band structure is investigated by femtosecond reflectance measurements. Carrier cooling which causes absorption saturation recovery is accelerated by the enhancement of carrier–carrier scattering. Theoretical analysis of the optical field distribution suggests that the confinement of a high density of photons near the surface of the nonlinear photonic band structure induces the enhancement of carrier–carrier scattering. The accelerated carrier relaxation with enhanced absorption saturation leads to an increase in the figure of merit in the third‐order optical nonlinearities.