利用超快激光脉冲作为激发光源,研究了激发态质子转移有机分子7-羟基喹啉溶液的双光子吸收光谱特性。实验发现在波长为532nm的脉冲激光作用下,该溶液在波长约为380nm和550nm处出现了两个荧光峰,研究证明,峰波长为380nm处的荧光是7-羟基喹啉醇式结构下分子从激发态返回基态时发射的荧光,而峰波长为550nm处的荧光是该溶液的酮式结构分子从激发态返回基态时发射的荧光。 Using the ultrafast laser pulse as the excitation light source, the two-photon absorption spectra of excited-state proton transfer organic molecules 7-hydroxyquinoline were studied. It was found that at a wavelength of 532 nm pulsed laser, the solution showed two fluorescence peaks at wavelengths of about 380 nm and 550 nm. It was proved that the fluorescence at a peak wavelength of 380 nm is a molecule of 7-hydroxyquinolol structure The fluorescence emitted when returning to the ground state from the excited state while the fluorescence at the peak wavelength of 550 nm is the fluorescence emitted when the ketone structural molecule of the solution returns from the excited state to the ground state.