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Temperature dependence of quasi-three level laser transition for long pulse Nd:YAG laser

Bidin, Noriah and Pourmand, Seyed Ebrahim and Sidi Ahmad, Muhamad Fakaruddin and Khrisnan, Ganesan and Mohd Taib, Nur Athirah and Adnan, Nurul Nadia and Bakhtiar, Hazri (2013) Temperature dependence of quasi-three level laser transition for long pulse Nd:YAG laser. Optics & Laser Technology, 45. pp. 74-78. ISSN 00303992

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Abstract

The influence of temperature and pumping energy on stimulated emission cross section and the laser output of quasi-three level laser transition are reported. Flash lamp is used to pump Nd:YAG laser rod. Distilled water is mixed with ethylene glycol to vary the temperature of the cooling system between -30 and 60 °C. The capacitor voltage of flash lamp driver is verified to manipulate the input energy within the range of 10–70J. The line of interest in quasi-three level laser comprised of 938. 5 and 946 nm. The stimulated emission cross section of both lines is found to be inversely proportional to the temperature but directly proportional to the input energy. This is attributed from thermal broadening effect. The changes of stimulated emission cross section and the output laser with respect to the temperature and input energy on line 946 nm are realized to be more dominant in comparison to 938.5 nm.

Item Type: Article
Uncontrolled Keywords: Stimulated emission cross section; Nd:YAG laser; quasi-three level laser
Subjects: Q Science > QC Physics
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:21
Last Modified: 13 Aug 2018 03:21
URI: http://eprints.uthm.edu.my/id/eprint/9822
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