Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media

Article

关键词: LASER ACTION;    GAIN MEDIA;    COHERENT BACKSCATTERING;    STIMULATED-EMISSION;    WEAK LOCALIZATION;    LIGHT;   

DOI  :  10.1103/PhysRevB.59.50

来源: SCIE

【 摘 要 】

Photoluminescence spectra and the reflectivity of incident light were examined in dye molecules in strongly scattering media. With increasing incident light intensity, the spectra show red- and blueshifts depending on the geometry of experiments, and the reflectivity increases nonlinearly. These excitation-power-dependent spectral shifts and nonlinear reflectivity are well explained when we consider saturation absorption in the excitation process and the reabsorption in the luminescence process in dyes. [S0163-1829(99)14701-5].

【 授权许可】

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