| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Effects of 946-nm thermal shift and broadening on Nd3+:YAG laser performance |
| Seyed Ebrahim Pourmanda, Ghasem Rezaeib |
a Department of Optics and Laser Engineering, Estahban Branch, Islamic Azad University, Estahban, Iran;
b Department of Physics, College of Sciences, Yasouj University, Yasouj 75914-353, Iran |
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Abstract Spectroscopic properties of flashlamp pumped Nd3+:YAG laser are studied as a function of temperature in a range from-30 ℃ to 60 ℃. The spectral width and shift of quasi three-level 946.0-nm inter-Stark emission within the respective intermanifold transitions of 4F3/2→4I9/2 are investigated. The 946.0-nm line shifts toward the shorter wavelength and broadens. In addition, the threshold power and slope efficiency of the 946.0-nm laser line are quantified with temperature. The lower the temperature, the lower the threshold power is and the higher the slope efficiency of the 946.0-nm laser line is, thus the higher the laser output is. This phenomenon is attributed to the ion-phonon interaction and the thermal population in the ground state.
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Received: 30 April 2015
Revised: 30 June 2015
Accepted manuscript online:
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PACS:
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42.62.Fi
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(Laser spectroscopy)
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| Fund: Project supported by Estahban Branch, Islamic Azad University. |
Corresponding Authors:
Seyed Ebrahim Pourmand
E-mail: se.pourmand@gmail.com
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Cite this article:
Seyed Ebrahim Pourmand, Ghasem Rezaei Effects of 946-nm thermal shift and broadening on Nd3+:YAG laser performance 2015 Chin. Phys. B 24 124206
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