Researching | Progress on Yb-Doped All-Solid-State Femtosecond Laser Amplifier with High Repetition Rate

Chinese Journal of Lasers, Volume. 48, Issue 5, 0501005(2021)

Progress on Yb-Doped All-Solid-State Femtosecond Laser Amplifier with High Repetition Rate

Chuan Bai¹, Wenlong Tian¹, Geyang Wang¹, Li Zhen¹, Rui Xu¹, Dacheng Zhang¹, Zhaohua Wang², Jiangfeng Zhu^1、*, and Zhiyi Wei²

Author Affiliations

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

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

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Fig. 1. Schematic of regenerative amplifier

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Fig. 2. Heat dissipation schematic of thin disk

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Fig. 3. Diagram of nonlinear amplifier^[55]. (a) Experimental equipment; (b) evolution rule of pulse during amplification process

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Fig. 4. Experimental diagram of double crystal regeneration cavity^[56]

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Fig. 5. Schematic of four-pass travelling-wave amplifier

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Fig. 6. Schematic of double-ended pumped slab laser technology

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Fig. 7. Schematic of single crystal fiber

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Fig. 8. Experimental setup of double-pass travelling-wave amplification^[92]

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Fig. 9. Layout of the four-pass polarization switched amplifier^[99]

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Table 1. Basic properties of Yb-doped laser materials

Table 1. Basic properties of Yb-doped laser materials

Laser material	τ /μs	σ_a,p /(10^-20·cm²)	σ_e,l /(10^-20·cm²)	Δλ /nm	Κ /(W·m^-1·K^-1)
Yb∶YAG^[23]	951	0.75	2.1	10--11	5.7
Yb∶KGW^[24]	~600	12	2.8	20	3.3
Yb∶KYW(n_m)^[25]	600	13.3	3.0	16	3.3
Yb∶Ca ${F_{2}}^{[26]}$	2400	0.54	0.25	70	9.7
Yb∶CALGO^[27]	420	1.0(a)	0.75(a)	80	6.3

Table 2. CPA of Yb∶YAG SCF and Yb∶YAG rods pumped at 940 nm and 969 nm^[89]

Table 2. CPA of Yb∶YAG SCF and Yb∶YAG rods pumped at 940 nm and 969 nm^[89]

Pump power /W	Seed repetition /kHz	Output power /W	Small signal gain /dB	$M_{x}^{2}$	$M_{y}^{2}$
Yb∶YAG SCF with size of 1 mm×40 mm and doping concentration of 1% under 940 nm pump
70	100	8.5	17	1.06	1.07
105(70+35)	100	21	26	1.09	1.09
120(70+50)	500	26	28	1.13	1.10
Yb∶YAG rod with size of 5 mm×5 mm×5 mm and doping concentration of 5% under 940 nm pump
70	100/500	7.2/7.8	17	1.10	1.17
Yb∶YAG rod with size of 5 mm×5 mm×20 mm and doping concentration of 2% under 940 nm pump
70	500	11.2	24	1.17	1.08
Yb∶YAG rod with size of 2 mm×2 mm×20 mm and doping concentration of 2% under 940 nm pump
70	500	13.5	25	1.06	1.08
120(70+35)	500	39.5	40	1.07	1.09
140(70+50)	500	47.5	42.3	1.13	1.17
Yb∶YAG rod with size of 2 mm×2 mm×20 mm and doping concentration of 2% under 969 nm pump
87	500	17.9	24.4	1.06	1.06

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Chuan Bai, Wenlong Tian, Geyang Wang, Li Zhen, Rui Xu, Dacheng Zhang, Zhaohua Wang, Jiangfeng Zhu, Zhiyi Wei. Progress on Yb-Doped All-Solid-State Femtosecond Laser Amplifier with High Repetition Rate[J]. Chinese Journal of Lasers, 2021, 48(5): 0501005

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Paper Information

Category: laser devices and laser physics

Received: Nov. 2, 2020

Accepted: Dec. 21, 2020

Published Online: Mar. 12, 2021

The Author Email: Zhu Jiangfeng (jfzhu@xidian.edu.cn)

DOI:10.3788/CJL202148.0501005

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology