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Optical Engineering

Refractive index engineering in polycarbonate implanted by 100 keV N+ ions
Author(s): Nidhi Shekhawat; Annu Sharma; Sanjeev Aggarwal; K. G. M. Nair
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Paper Abstract

The refractive index tailoring in the surface layers of polycarbonate has been carried out with low energy nitrogen ion implantation. The specimens were implanted at 100 keV with nitrogen ions in the fluence range of 1×1015−to 1×1017 ions cm−2. The refractive index values of virgin and implanted specimens have been calculated from the diffuse reflectivity spectrum obtained by using UV-visible spectroscopy. The refractive indices have been found to increase with implantation dose and wavelength (in visible region). At 400 nm the refractive index changes from 1.58 (for virgin) to nearly 2.34 (at an implantation dose of 1×1017 ions cm−2). These changes in the refractive indices have been further correlated with the changes observed in conjugation and bonding of carbon atoms investigated using UV-visible absorption and attenuated total reflectance Fourier transform Infrared spectroscopic techniques. The possibility of formation of an optical waveguide using these implanted specimens has been discussed.

Paper Details

Date Published: 1 April 2011
PDF: 8 pages
Opt. Eng. 50(4) 044601 doi: 10.1117/1.3562325
Published in: Optical Engineering Volume 50, Issue 4
Show Author Affiliations
Nidhi Shekhawat, Kurukshetra Univ. (India)
Annu Sharma, Kurukshetra Univ. (India)
Sanjeev Aggarwal, Kurukshetra Univ. (India)
K. G. M. Nair, Indira Gandhi Ctr. for Atomic Research (India)


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