Photonic crystal rod-based high-performance ultrafast fiber laser system

Zhiguo Lv; Zhi Yang; Qianglong Li; Feng Li; Yishan Wang; Wei Zhao; Xiaojun Yang

doi:doi:10.1017/hpl.2020.42

High Power Laser Science and Engineering, 2020, 8 (4): 04000e40, Published Online: Jan. 5, 2021

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Zhiguo Lv ^1,*Zhi Yang ²Qianglong Li ²Feng Li ²Yishan Wang ²Wei Zhao ²Xiaojun Yang ^2,*

Author Affiliations

¹ School of Physical Science and Technology, Inner Mongolia Key Laboratory of Nanoscience and Nanotechnology, Inner Mongolia University, Hohhot 010021, China

² State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China

Figures & Tables

Fig. 1. Schematic of the photonic crystal rod-based femtosecond fiber CPA laser system. WDM, wavelength division multiplexer; PD-ISO, polarization-dependent optical isolator; AOM, acousto-optic modulator; CFBG, chirped fiber Bragg grating; HWP, half-wave plate; HR, highly reflective mirror; L₁, L_2, L₃, lens with 30 mm, 60 mm, and 20 mm focal length, respectively.

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Fig. 2. Optical layout of PP-based transmission grating-pair compressor. G₁ and G₂, gratings; PP₁, PP₂, and PP₃, Porro prisms.

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Fig. 3. Spectra of the incident seed and stretched pulses with 0.1 nm resolution. The blue curve shows the spectrum of mode-locked seed pulses and the red curve corresponds to the spectrum of stretched pulses.

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Fig. 4. Seed spectrum after reducing the repetition rates to 500 kHz (blue line) and output spectrum of the 35 μm/250 μm LMA DC gain fiber amplification stage (red line).

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Fig. 5. Variation tendency of the amplified average power with the increase of pump power in the photonic crystal rod-based main amplification stage.

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Fig. 6. Measured results at 51 W of compressed average power: (a) optical spectrum; (b) autocorrelation traces; (c) beam profile; (d) M² factors.

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Fig. 7. (a) Output power fluctuations and (b) beam pointing stability of the presented laser system in 8 h at 51 W of average power and around 100 μJ single pulse energy.

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Zhiguo Lv, Zhi Yang, Qianglong Li, Feng Li, Yishan Wang, Wei Zhao, Xiaojun Yang. Photonic crystal rod-based high-performance ultrafast fiber laser system[J]. High Power Laser Science and Engineering, 2020, 8(4): 04000e40.

Photonic crystal rod-based high-performance ultrafast fiber laser system Download： 720次

Fig. 2. Optical layout of PP-based transmission grating-pair compressor. G₁ and G₂, gratings; PP₁, PP₂, and PP₃, Porro prisms.

Fig. 3. Spectra of the incident seed and stretched pulses with 0.1 nm resolution. The blue curve shows the spectrum of mode-locked seed pulses and the red curve corresponds to the spectrum of stretched pulses.

Fig. 4. Seed spectrum after reducing the repetition rates to 500 kHz (blue line) and output spectrum of the 35 μm/250 μm LMA DC gain fiber amplification stage (red line).

Fig. 5. Variation tendency of the amplified average power with the increase of pump power in the photonic crystal rod-based main amplification stage.

Fig. 6. Measured results at 51 W of compressed average power: (a) optical spectrum; (b) autocorrelation traces; (c) beam profile; (d) M² factors.

Fig. 7. (a) Output power fluctuations and (b) beam pointing stability of the presented laser system in 8 h at 51 W of average power and around 100 μJ single pulse energy.

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Photonic crystal rod-based high-performance ultrafast fiber laser system Download： 720次

Fig. 2. Optical layout of PP-based transmission grating-pair compressor. G1 and G2, gratings; PP1, PP2, and PP3, Porro prisms.

Fig. 3. Spectra of the incident seed and stretched pulses with 0.1 nm resolution. The blue curve shows the spectrum of mode-locked seed pulses and the red curve corresponds to the spectrum of stretched pulses.

Fig. 4. Seed spectrum after reducing the repetition rates to 500 kHz (blue line) and output spectrum of the 35 μm/250 μm LMA DC gain fiber amplification stage (red line).

Fig. 5. Variation tendency of the amplified average power with the increase of pump power in the photonic crystal rod-based main amplification stage.

Fig. 6. Measured results at 51 W of compressed average power: (a) optical spectrum; (b) autocorrelation traces; (c) beam profile; (d) M2 factors.

Fig. 7. (a) Output power fluctuations and (b) beam pointing stability of the presented laser system in 8 h at 51 W of average power and around 100 μJ single pulse energy.

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Fig. 2. Optical layout of PP-based transmission grating-pair compressor. G₁ and G₂, gratings; PP₁, PP₂, and PP₃, Porro prisms.

Fig. 6. Measured results at 51 W of compressed average power: (a) optical spectrum; (b) autocorrelation traces; (c) beam profile; (d) M² factors.