Pulsed LD side-pumped MgO: LN electro-optic cavity-dumped 1123 nm Nd: YAG laser with short pulse width and high peak power
Yang Bai 1,2,3,†Bing Bai 1,2,3Diao Li 1,2,3Yanxiao Sun 1,2,3Jianlin Li 1,2,3Lei Hou 1,2,3Mingxuan Hu 1,2,3Jintao Bai 1,2,3
1 National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), Institute of Photonics and Photon-Technology, Northwest University, Xi’an 710069, China
2 Shaanxi Engineering Technology Research Center for Solid State Lasers and Application, Xi’an 710069, China
3 Provincial Key Laboratory of Photo-electronic Technology, Institute of Photonics and Photon-Technology, Northwest University, Xi’an 710069, China
Figures & Tables
Fig. 1. Schematic of the laser setup.
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Fig. 2. Variation curves of the sagittal and tangential spot sizes with the cavity length at repetition rates of (a) 1 kHz and (b) 100 Hz.
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Fig. 3. Pulse energy and pulse width as a function of pump current and pump voltage at different repetition rates.
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Fig. 4. Output spectrum at 1 kHz repetition rate.
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Fig. 5. Output single-pulse waveforms at repetition rates of (a) 1 kHz, (b) 700 Hz, (c) 400 Hz, and (d) 100 Hz.
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Fig. 6. Output characteristics of 1123 nm laser beam at 1 kHz. (a) Measured results of the laser beam quality, (b) 3D and 2D (inset) beam energy density distributions.
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Table1. Main output parameters of the cavity-dumped laser under the maximum pump current of 110 A.
| Repetition rate | Maximum single-pulse energy | Pulse width | Peak power | Instability of pulse width | Instability of single-pulse energy |
|---|
| 1.0 kHz | 11.3 mJ | 5.05 ns | 2.24 MW | $\pm 2.65\%$ | $\pm 3.47\%$ | | 700 Hz | 18.3 mJ | 4.70 ns | 3.89 MW | $\pm 2.41\%$ | $\pm 3.14\%$ | | 400 Hz | 26.9 mJ | 4.51 ns | 5.96 MW | $\pm 1.75\%$ | $\pm 2.59\%$ | | 100 Hz | 39.6 mJ | 4.07 ns | 9.73 MW | $\pm 1.55\%$ | $\pm 2.06\%$ |
|
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Yang Bai, Bing Bai, Diao Li, Yanxiao Sun, Jianlin Li, Lei Hou, Mingxuan Hu, Jintao Bai. Pulsed LD side-pumped MgO: LN electro-optic cavity-dumped 1123 nm Nd: YAG laser with short pulse width and high peak power[J]. High Power Laser Science and Engineering, 2018, 6(1): 010000e4.
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