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报道了一种有机染料Trans 4 [p carbazol 9 ylstyryl] ] N methylpyridiniumiodide的线性和非线性光学性质。当用 830nm皮秒激光激发时 ,可以得到强烈的黄绿色上转换荧光 ,中心波长在 538nm附近。该染料的双光子荧光寿命为 95 .6ps。测试了该染料在 72 0～ 1 0 50nm的非线性透过率 ,并求出了该染料在上述波长时的双光子吸收截面。双光子吸收最强在 80 0nm ,吸收截面为 9.2× 1 0 - 48cm4 ·s/ photon。
Reported the linear and nonlinear optical properties of an organic dye, Trans 4 [p carbazol 9 ylstyryl]] N methylpyridiniumiodide. When excited with a 830 nm picosecond laser, a strong yellow-green up-conversion fluorescence can be obtained with a center wavelength near 538 nm. The two-photon fluorescence lifetime of the dye is 95.6ps. The non-linear transmittance of the dye at 72 0 ~ 105 nm was tested and the two-photon absorption cross section of the dye at the above wavelength was calculated. Two-photon absorption strongest at 80 0nm, absorption cross-section of 9.2 × 10 4-48cm4 · s / photon.