Chinese Journal of Lasers, Volume. 39, Issue 3, 302005(2012)
Second Harmonic Generation Characteristics of Continuous Wave Narrow-Linespectrum All Fiber Amplifier in PPSLT
The combination of 1 μm continuous wave (CW), high power, narrow-linespectrum fiber amplifier and the periodically poled materials with high second harmonic generation efficiency provides a compact and high efficiency approach for wavelength conversion with high beam quality. A polarization maintaining all fiber amplifier with the master-oscillator power amplifier (MOPA) is built. 30 W CW fiber laser is obtained with 0.035 nm linewidth at 1064.25 nm center wavelength. Single-pass, second-harmonic generation of the fiber laser in periodically poled stoichiometric lithium tantalate (PPSLT) made in China is demonstrated. Stabilizing the temperature at 145.6 ℃, 2.1 W green light is achieved at the pump fundamental power of 21.5 W. The effects on the second harmonic generation efficiency produced by temperature, input power density, and Boyd-Kleinman focusing parameter are analysed. Higher power green light can be expected by increasing the fundamental power because the saturation effect is not observed.
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Jiao Mengli, Lü Xinjie, Liu Chi, Yuan Ye, Qi Yunfeng, Ding Yaqian, Zhao Gang, Zhou Jun. Second Harmonic Generation Characteristics of Continuous Wave Narrow-Linespectrum All Fiber Amplifier in PPSLT[J]. Chinese Journal of Lasers, 2012, 39(3): 302005
Category: Laser physics
Received: Nov. 8, 2011
Accepted: --
Published Online: Feb. 20, 2012
The Author Email: Mengli Jiao (jiaomengli2006@163.com)