论文部分内容阅读
理论上简要地分析了在可见光波段碘荧光强度与激发激光波长的关系 ,并用波长为 5 32nm半导体倍频Nd :YAG激光、波长为 5 14 .5nm、5 0 1.7nm、4 96 .5nm和 4 88nm的氩离子激光激发碘分子 ,通过对获得的荧光信号分析得出 ,五种波长的激光均可诱导出碘荧光。对相同的激光功率 ,波长为 5 32nm的倍频Nd :YAG诱导出的碘荧光信号比波长为 5 14 .5nm的氩离子激光强 ,两种激光均可作为碘气体的激发激光。其它三种波长激光诱导出碘荧光强度弱 ,在激发激光传输方向衰减明显 ,不适合作为碘荧光的激发激光。
The relationship between the intensity of iodine fluorescence and the wavelength of excitation laser in the visible wavelength band is theoretically and briefly analyzed. The relationship between the intensity of excitation laser and the wavelength of the excitation laser in the visible region is analyzed. The wavelength of 532nm Nd: YAG laser with wavelength of 5 14 .5nm, 5 0 1.7nm, 4 96.5nm and 4 88nm argon ion laser excitation of iodine molecules, obtained by the fluorescence signal analysis showed that the five wavelengths of laser can induce iodine fluorescence. For the same laser power, the iodine fluorescence signal induced by the frequency-doubling Nd: YAG with the wavelength of 532nm is stronger than the argon ion laser with the wavelength of 5144nm. Both of the two kinds of lasers can be used as the excitation laser of iodine gas. The other three kinds of wavelength laser induced iodine fluorescence intensity is weak, obvious attenuation in the direction of excitation laser transmission, not suitable as iodine fluorescence excitation laser.