Effects of 946-nm thermal shift and broadening on Nd3+:YAG laser performance

doi:10.1088/1674-1056/24/12/124206

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 ⁴F_3/2→⁴I_9/2 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: se.pourmand@gmail.com

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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Effects of 946-nm thermal shift and broadening on Nd3+:YAG laser performance

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Effects of 946-nm thermal shift and broadening on Nd³⁺:YAG laser performance