Behavior of NLO polymer modulators irradiated by gamma-rays

被引：10

作者：

Taylor, EW ^{[1
]}

Nichter, J ^{[1
]}

Nash, F ^{[1
]}

Michalak, R ^{[1
]}

Haas, F ^{[1
]}

Payson, P ^{[1
]}

Cook, P ^{[1
]}

McEwen, T ^{[1
]}

McKeon, B ^{[1
]}

Szep, A ^{[1
]}

Flushe, B ^{[1
]}

Pirich, A ^{[1
]}

Brost, G ^{[1
]}

Grote, J ^{[1
]}

Zetts, J ^{[1
]}

Yaney, P ^{[1
]}

Heckman, E ^{[1
]}

机构：

[1] Int Photon Consultants Inc, Albuquerque, NM 87122 USA

来源：

LINEAR AND NONLINEAR OPTICS OF ORGANIC MATERIALS III | 2003年 / 5212卷

关键词：

polymer EO modulators; nonlinear optics; space radiation effects; space environments;

D O I：

10.1117/12.510380

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two second-order nonlinear optical chromophoric materials were investigated for their responses to gamma-ray irradiations for doses ranging from approximately 10-104 krad(Si). Thin film polymer modulators composed of a mixture of amorphous polycarbonate and phenyltetraene [APC/CLD-1(CPW-1)] active regions with UV upper and lower UV claddings were investigated for their pre- and post- irradiation behavior. Modulator V-pi, insertion loss, and extinction ratio responses were examined, while a blend of salmon deoxyribonucleic acid (DNA)hexadeCetylTriMethylAmmonium Chloride (CTMA) film samples were studied for their spectral responses following irradiations over the spectral range lambda = 240 -2600 rim. Following irradiation ranging from 9.6-104 krad(Si), the DNA/CTMA films exhibited losses in transmissivity over the spectral range lambda = 882-2600 run and increased transmissivity over portions of the 240 nm < lambda < 882 nm band. Data from the study also suggested that strongly poled APC/CPW-1 modulators operating at lambda = 1550 nm and exhibiting low V-pi values were less likely to have their half-wave voltages affected by ionizing radiation. The optical insertion losses for the majority of the APC/CPW-1 irradiated modulators were found to decrease following irradiation. Discussion of the experimental results and mechanisms believed responsible for the post-irradiation behavior and results are presented.

引用

页码：216 / 226

页数：11

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