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Amrollahi H, Arabanian A S, Massudi R. Investigation of thermal distribution effects on the efficiency of the second harmonic generation by continuous fiber laser at 1064 nm in the crystals of MgO: PPSLT and MgO: PPLN. ICOP & ICPET _ INPC _ ICOFS 2018; 24 :445-448
URL: http://opsi.ir/article-1-1546-en.html
URL: http://opsi.ir/article-1-1546-en.html
1- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran
Abstract: (2200 Views)
In this paper, effects of thermal distribution on the efficiency of the second harmonic generation by a continuous laser with a wavelength of 1064 nm inside a MgO: PPLT crystal is investigated. The results of the numerical calculations show that for the incident power of above 30W the asymmetric thermal distribution along the crystal leads to the phase mismatch and significant reduction of the second harmonic efficiency. By comparing the obtained results for the distribution of temperature on the efficiency of the second harmonic inside the crystals of MgO: PPLT and MgO: PPLN for the high incident powers, it has been found that despite higher nonlinear coefficient of MgO: PPLN crystal, the efficiency of MgO: PPLT crystal is higher.
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