High power Yb-fiber laser amplifier based on nonlinear chirped-pulse amplification at a repetition rate of 1 MHz

Renchong Lü; Hao Teng; Jiangfeng Zhu; Yang Yu; Wei Liu; Guoqing Chang; Zhiyi Wei

doi:doi:10.3788/COL202119.091401

Chinese Optics Letters, 2021, 19 (9): 091401, Published Online: Jun. 2, 2021

High power Yb-fiber laser amplifier based on nonlinear chirped-pulse amplification at a repetition rate of 1 MHz Download： 692次

Renchong Lü ^1,2Hao Teng ^2,5,*Jiangfeng Zhu ^1,**Yang Yu ^1,2Wei Liu ⁴Guoqing Chang ²Zhiyi Wei ^2,3,5,***

Author Affiliations

¹ School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China

² Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

³ School of Physical Science, University of Chinese Academy of Sciences, Beijing 100049, China

⁴ School of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519082, China

⁵ Songshan Lake Materials Laboratory, Dongguan 523808, China

Figures & Tables

Fig. 1. Schematic of the NCPA system. BPF, bandpass filter; WDM, wavelength division multiplex; SM-LD, single-mode laser diode; YDF, Yb-doped gain fiber; PDG, pulse delay generator; AOM, acoustic optical modulator; PDOI, polarization dependent optical isolator; MM-LD, multi-mode laser diode; DM, dichromic mirror; TG, transmission grating; HR, high reflecting mirror; PCF, photonic crystal fiber.

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Fig. 2. (a) RF spectrum of the oscillator. (b) The AC trace of the laser pulses from the oscillator.

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Fig. 3. Comparison of the transmission spectra after the BPF and the oscillator.

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Fig. 4. (a) Spectral distribution from amplified pulses on linear and logarithmic (inset) scale; (b) AC trace of compressed pulses.

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Fig. 5. (a) Dependence of output power versus the pump power for the main amplifier; (b) measured power stability and pulse train; (c) M² value of this NCPA system.

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Fig. 6. AC traces at different pulse energies (a)–(c) with BPF and (d)–(f) without BPF.

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Renchong Lü, Hao Teng, Jiangfeng Zhu, Yang Yu, Wei Liu, Guoqing Chang, Zhiyi Wei. High power Yb-fiber laser amplifier based on nonlinear chirped-pulse amplification at a repetition rate of 1 MHz[J]. Chinese Optics Letters, 2021, 19(9): 091401.

High power Yb-fiber laser amplifier based on nonlinear chirped-pulse amplification at a repetition rate of 1 MHz Download： 692次

Fig. 2. (a) RF spectrum of the oscillator. (b) The AC trace of the laser pulses from the oscillator.

Fig. 3. Comparison of the transmission spectra after the BPF and the oscillator.

Fig. 4. (a) Spectral distribution from amplified pulses on linear and logarithmic (inset) scale; (b) AC trace of compressed pulses.

Fig. 5. (a) Dependence of output power versus the pump power for the main amplifier; (b) measured power stability and pulse train; (c) M² value of this NCPA system.

Fig. 6. AC traces at different pulse energies (a)–(c) with BPF and (d)–(f) without BPF.

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High power Yb-fiber laser amplifier based on nonlinear chirped-pulse amplification at a repetition rate of 1 MHz Download： 692次

Fig. 2. (a) RF spectrum of the oscillator. (b) The AC trace of the laser pulses from the oscillator.

Fig. 3. Comparison of the transmission spectra after the BPF and the oscillator.

Fig. 4. (a) Spectral distribution from amplified pulses on linear and logarithmic (inset) scale; (b) AC trace of compressed pulses.

Fig. 5. (a) Dependence of output power versus the pump power for the main amplifier; (b) measured power stability and pulse train; (c) M2 value of this NCPA system.

Fig. 6. AC traces at different pulse energies (a)–(c) with BPF and (d)–(f) without BPF.

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Fig. 5. (a) Dependence of output power versus the pump power for the main amplifier; (b) measured power stability and pulse train; (c) M² value of this NCPA system.