Optical limiting of pentaazadentate complexes in solution for nanosecond pulses

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	Optical limiting of pentaazadentate complexes in solution for nanosecond pulses
	Guo, FQ ; Sun, WF ; Wang, DY ; Song, YL
刊名	OPTICAL ENGINEERING
	2001
卷号	40 期号:1 页码:138-141
关键词	Optical Limiting Pentaazadentate Metal Complexes Limiting Thresholds Lowest Nonlinear Transmittance
ISSN号	0091-3286
英文摘要	Passive optical limiters are significant for protecting sensors and human eyes from high intensity laser. The selection of materials is still the key point for optical power limiters. The optical limiting performances have been measured for six new pentaazadentate metal complexes with initial linear transmission of 0.90 in a 2 mm cell in chloroform at 532 nm with 8 ns pulses, in which the reverse saturable absorption from the triplet-->triplet excited state is responsible for the optical limiting. The optical limiting thresholds at T/T-0 = 0.5 are 139 mJ/cm(2), 350 mJ/cm(2) and 420 mJ/cm(2) for [(PMC-NO2)Cd]CI, [(PMC-Np)Cd]CI, and [(PMC)Sm]CI, respectively. The lowest nonlinear transmittance for [(PMC-NO2)Cd]CI is 10%, while the incident maximum fluence reaches to 600 mJ/cm(2). The ratios of T-0/T-lim, are estimated at 2.3 to 9.0. The limiting thresholds are strongly influenced by the nature of the substituents on the benzene ring and the heavy atom effect. Electron withdrawing groups of the complexes can enhance the limiting capability, and the heavy atom effect facilitates the decreasing of the limiting threshold. (C) 2001 Society of Photo-Optical Instrumentation Engineers.
语种	英语
出版者	SPIE-INT SOCIETY OPTICAL ENGINEERING
WOS记录号	WOS:000166807400020
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/77101]
专题	中国科学院化学研究所
通讯作者	Guo, FQ
作者单位	1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Photochem, Beijing 100080, Peoples R China 2.Haerbin Engn Univ, Dept Appl Phys, Haerbin 150001, Peoples R China
推荐引用方式 GB/T 7714	Guo, FQ,Sun, WF,Wang, DY,et al. Optical limiting of pentaazadentate complexes in solution for nanosecond pulses[J]. OPTICAL ENGINEERING,2001,40(1):138-141.
APA	Guo, FQ,Sun, WF,Wang, DY,&Song, YL.(2001).Optical limiting of pentaazadentate complexes in solution for nanosecond pulses.OPTICAL ENGINEERING,40(1),138-141.
MLA	Guo, FQ,et al."Optical limiting of pentaazadentate complexes in solution for nanosecond pulses".OPTICAL ENGINEERING 40.1(2001):138-141.