دوره 7، شماره 2 - ( 5-1392 )                   جلد 7 شماره 2 صفحات 124-113 | برگشت به فهرست نسخه ها

XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Ghanbari H, Sarraf-Mamoory R, Sabbagh Zadeh J, Chehrghani A, Malekfar R. Nonlinear Optical Absorption of Carbon Nanostructures Synthesized by Laser Ablation of Highly Oriented Pyrolytic Graphite in Organic Solvents. IJOP 2013; 7 (2) :113-124
URL: http://ijop.ir/article-1-161-fa.html
Nonlinear Optical Absorption of Carbon Nanostructures Synthesized by Laser Ablation of Highly Oriented Pyrolytic Graphite in Organic Solvents. 1392; 7 (2) :124-113

URL: http://ijop.ir/article-1-161-fa.html


چکیده:   (7588 مشاهده)
In this study, Highly Oriented Pyrolytic Graphite was ablated in various polar and nonpolar solvents by Q-switched neodymium: yttrium-aluminum-garnet laser (wavelength=1064 nm, frequency=2 kHz, pulse duration=240 ns). Then, the products were examined using Scanning Electron Microscopy and UV-Vis spectroscopy. The images showed that different carbon structures such as cauliflower-like structures in benzene, spiral integrated forms in toluene, organic integrated networks in hexane, and nanoparticles in ethanol were formed. In n-methyl-2-pyrrolidone (NMP), sheets and bulk deformed structures were seen. Also, in Dimethylacetamide, particles in different stages of growth could be detected. The nonlinear optical absorption (NLA) behaviors of the products were investigated by exposing them to a 532 nm nanosecond laser using the Z-scan technique. The saturated NLA coefficient, obtained from structures of NMP and hexane-based synthesized samples, are 1.1×10-8 and 2.4×10-8 cm W-1, respectively. The saturable absorption responses of these samples were switched to the reverse saturable absorption responses in the other synthesis mediums. The maximum nonlinear absorption coefficient of 10.2×10-8 cm W 1 was measured for spiral integrated superstructures, produced in the toluene medium.
     
نوع مطالعه: پژوهشي | موضوع مقاله: عمومى
دریافت: 1393/2/4 | ویرایش نهایی: 1393/12/5 | پذیرش: 1393/3/29 | انتشار: 1393/5/23

ارسال نظر درباره این مقاله : نام کاربری یا پست الکترونیک شما:
CAPTCHA

بازنشر اطلاعات
Creative Commons License این مقاله تحت شرایط Creative Commons Attribution-NonCommercial 4.0 International License قابل بازنشر است.

کلیه حقوق این وب سایت متعلق به می باشد.

طراحی و برنامه نویسی : یکتاوب افزار شرق

© 2022 CC BY-NC 4.0 | International Journal of Optics and Photonics

Designed & Developed by : Yektaweb