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Chin. Phys. B, 2015, Vol. 24(12): 124206    DOI: 10.1088/1674-1056/24/12/124206

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
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 4F3/24I9/2 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.
Keywords:  946-nm Nd:YAG laser      thermal broadening      thermal shift      flashlamp pump      slope efficiency      threshold power  
Received:  30 April 2015      Revised:  30 June 2015      Accepted manuscript online: 
PACS:  42.62.Fi (Laser spectroscopy)  
Fund: Project supported by Estahban Branch, Islamic Azad University.
Corresponding Authors:  Seyed Ebrahim Pourmand     E-mail:

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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