VCSEL-pumped Nd:YAG laser with 95  W average power and user-selectable nanosecond pulses

Chao Wang; Hui Wei; Youen Jiang; Jiangfeng Wang; Zhi Qiao; Jiangtao Guo; Wei Fan; Xuechun Li

doi:doi:10.3788/COL201614.121402

Chinese Optics Letters, 2016, 14 (12): 121402, Published Online: Aug. 2, 2018

VCSEL-pumped Nd:YAG laser with 95 W average power and user-selectable nanosecond pulses

Chao Wang ^1,2,*Hui Wei ^1,**Youen Jiang ¹Jiangfeng Wang ¹Zhi Qiao ^1,2Jiangtao Guo ^1,2Wei Fan ¹Xuechun Li ¹

Author Affiliations

¹ Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

² University of Chinese Academy of Science, Beijing 100049, China

Figures & Tables

Fig. 1. Functional block diagram of the seeder.

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Fig. 2. Schematic of the regenerative amplifier and the four-pass amplifier, which includes Nd:YAG laser heads (AMP1 & AMP2), mirrors (M1–M4), 45° reflectors (HR), lenses (L1–L10), polarization beam splitter (PBS), Faraday rotators (FR), half wavelength plates (HWP), beam focuses (F1∼3), the first principal plane of the rod (P1), and the second principal plane of the rod (P2).

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Fig. 3. Pumping configuration of the module used in the four-pass amplifier.

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Fig. 4. Gain distribution over the cross section of the rod; the red line and the blue line represent the gain distribution along the horizontal and vertical center line of the cross section of the rod.

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Fig. 9. Temporal profiles for (a) 2, (b) 4, and (c) 6 ns pulses, respectively. The dashed line, the dotted line, and the solid line represent the pulse shape of the seed, the regenerative amplifier, and the four-pass amplifier, respectively.

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Chao Wang, Hui Wei, Youen Jiang, Jiangfeng Wang, Zhi Qiao, Jiangtao Guo, Wei Fan, Xuechun Li. VCSEL-pumped Nd:YAG laser with 95 W average power and user-selectable nanosecond pulses[J]. Chinese Optics Letters, 2016, 14(12): 121402.

VCSEL-pumped Nd:YAG laser with 95 W average power and user-selectable nanosecond pulses

Fig. 1. Functional block diagram of the seeder.

Fig. 3. Pumping configuration of the module used in the four-pass amplifier.

Fig. 4. Gain distribution over the cross section of the rod; the red line and the blue line represent the gain distribution along the horizontal and vertical center line of the cross section of the rod.

Fig. 5. Principle of the birefringence compensation.

Fig. 6. Output energy versus input energy of the four-pass amplifier.

Fig. 7. Output beam profile measured on the image plane.

Fig. 8. Wavefront distribution measured on the image plane.

Fig. 9. Temporal profiles for (a) 2, (b) 4, and (c) 6 ns pulses, respectively. The dashed line, the dotted line, and the solid line represent the pulse shape of the seed, the regenerative amplifier, and the four-pass amplifier, respectively.

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VCSEL-pumped Nd:YAG laser with 95 W average power and user-selectable nanosecond pulses

Fig. 1. Functional block diagram of the seeder.

Fig. 3. Pumping configuration of the module used in the four-pass amplifier.

Fig. 4. Gain distribution over the cross section of the rod; the red line and the blue line represent the gain distribution along the horizontal and vertical center line of the cross section of the rod.

Fig. 5. Principle of the birefringence compensation.

Fig. 6. Output energy versus input energy of the four-pass amplifier.

Fig. 7. Output beam profile measured on the image plane.

Fig. 8. Wavefront distribution measured on the image plane.

Fig. 9. Temporal profiles for (a) 2, (b) 4, and (c) 6 ns pulses, respectively. The dashed line, the dotted line, and the solid line represent the pulse shape of the seed, the regenerative amplifier, and the four-pass amplifier, respectively.

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