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Transmission properties of acousto optic material

Saidin, Mohamad Khairi and Mat Daud, Nazariah and Bidin, Noriah and Mat Daud, Yaacob (2007) Transmission properties of acousto optic material. Jurnal Fizik UTM, 2 . pp. 1-4. ISSN 0128-8644

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Abstract

Laser beam can be modulated by acousto optic modulator using a suitable acousto optic material. UV-VIS Spectrophotometer was utilized to investigate the transmission spectrum of two non linear acousto optic materials that are lithium niobate and fused quartz. From the spectrum it shows that transmittance for fused quartz and lithium niobate were 90% and 68% respectively. The absorption coefficient ? is calculated and plotted versus photon energy. It was found that ? increases linearly with photon energy in the range of 3.50 eV to 4.0 eV for fused quartz and 3.15 eV to 4.0 eV for lithium niobate. The estimated optical energy band gap was 2.97 eV for lithium niobate and 3.69 for fused quartz. From the transmission properties obtained in this study, it can be summarized that fused quartz is a better choice to be an acousto optic material.

Item Type:Article
Uncontrolled Keywords:acousto optic, Spectrophotometer, transmission spectrum, absorption coefficient
Subjects:Q Science > QC Physics
Divisions:Civil Engineering
ID Code:8450
Deposited By: Norshiela Buyamin
Deposited On:30 Apr 2009 09:35
Last Modified:13 Jan 2014 08:26

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