摘要
研究了八异戊氧基钯酞菁 (octa PdPc)掺杂有机改性溶胶 凝胶玻璃反饱和吸收和热散焦光限幅特性 ,初步研究了一种室内防护的可见波段脉冲和连续激光限幅器。对于 488nm波长 ,当限幅器的孔径为 2 2cm时 ,使用一层厚度为 1mm的octa PdPc限幅介质 ,得到的透过率≤ 30 %;在不改变孔径的情况下 ,增加一层相同厚度的octa PdPc限幅介质 ,得到的透过率≤ 9%。通过调小孔径或增加介质层数 ,限幅性能可进一步提高。对于 6 32 8nm ,5 14 5nm和 45 7 9nm波长的光 ,与 488nm具有相似的限幅特性。
Optical limiting properties based on reverse saturable absorption and thermal defocusing effect of organically modified sol-gel doped with octa-PdPc were studied. By utilizing this material, one optical limiter for indoor protection against visible pulse and continuous wave lasers was designed. The limiting effect of the limiter can be further enhanced by means of adjusting the size of the aperture or increase of the limiting medium layers. For the light with the wavelength of 488 nm, the transmittance of the limiter is less than 9% when aperture size is 2.2 cm. For lights of 632.8 nm, 514.5 nm and 457.9 nm, they have the similar limiting behaviors as the light of 488 nm.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2002年第1期33-36,共4页
Chinese Journal of Lasers
基金
国家自然科学基金 (5 970 2 0 0 2 )
河南大学基金 (9910 475 0 94)资助项目
