Sub-40-fs high-power Yb:CALYO laser pumped by single-mode fiber laser

Wenlong Tian; Geyang Wang; Dacheng Zhang; Jiangfeng Zhu; Zhaohua Wang; Xiaodong Xu; Jun Xu; Zhiyi Wei

doi:10.1017/hpl.2019.49

High Power Laser Science and Engineering, Volume. 7, Issue 4, 04000e64(2019)

Sub-40-fs high-power Yb:CALYO laser pumped by single-mode fiber laser

Wenlong Tian¹, Geyang Wang¹, Dacheng Zhang¹, Jiangfeng Zhu^1、†, Zhaohua Wang², Xiaodong Xu³, Jun Xu⁴, and Zhiyi Wei^2、†

Author Affiliations

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

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

³Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China

⁴School of Physics Science and Engineering, Tongji University, Shanghai 200092, China

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Fig. 1. The sketch for the experimental setup of the single-mode fiber-laser-pumped mode-locked Yb:CALYO laser. HWP: half-wave plate; L: lens; C1–C3: concave mirrors; GTI1–GTI4: Gires–Tournois interferometer mirrors; OC: output coupler; SESAM: semiconductor saturable absorption mirror.

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Fig. 2. (a) Optical spectrum and (b) the corresponding auto-correlation trace of the passively mode-locked Yb:CALYO laser. The black dot and red solid curve in (b) stand for the experimental data and sech²-fitting, respectively.

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$(a) Spectra; (b) output powers and pulse durations of different pure KLM operations realized by detuning the cavity with $\unicode[STIX]{x0394}L$; output properties under different pump power for KLM operation at $\unicode[STIX]{x0394}L=-6.126~\text{mm}$: (c) evolution of spectra and (d) changing in average power as well as pulse duration.$

Fig. 3. (a) Spectra; (b) output powers and pulse durations of different pure KLM operations realized by detuning the cavity with $\unicode[STIX]{x0394}L$; output properties under different pump power for KLM operation at $\unicode[STIX]{x0394}L=-6.126~\text{mm}$: (c) evolution of spectra and (d) changing in average power as well as pulse duration.

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Fig. 4. (a) The auto-correlation trace of the compressed pulses. Black and red curves are experimental result and sech² fitting, respectively. The blue curve is the auto-correlation trace of the Fourier transformation of the corresponding optical spectrum. (b) The corresponding RF spectrum of the 36-fs pulses measured with frequency windows of 3 MHz at 1 kHz of RBW and 0.6 GHz at 100 kHz of RBW (inset), respectively.

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Table 1. Overview of the state-of-the-art performance of ultrafast Yb solid-state oscillators generating sub-40-fs pulses.^a

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Table 1. Overview of the state-of-the-art performance of ultrafast Yb solid-state oscillators generating sub-40-fs pulses.^a

Crystal	Geometry			Energy	Reference
Yb:CALGO	Bulk	40 fs	15 mW	—	[14]
Yb:CALGO	Bulk	37 fs	1.5 W	${\sim}16~\text{nJ}$	[3]
Yb:CALGO	Bulk	32 fs	90 mW	${\sim}1~\text{nJ}$	[3]
Yb:CALGO	Bulk	39 fs	800 mW	19 nJ	[5]
Yb:CALGO	TDL	30 fs	150 mW	1.2 nJ	[18]
Yb:CALYO	Bulk	33 fs	36 mW	0.3 nJ	[15]
Yb:CALYO	Bulk	30 fs	26 mW	${\sim}0.2~\text{nJ}$	[16]
Yb:YAG	Bulk	35 fs	107 mW	${\sim}0.8~\text{nJ}$	[21]
Yb:YCOB	Bulk	35 fs	36 mW	${\sim}0.4~\text{nJ}$	[22]
Yb:Lu₂O₃	TDL	35 fs	1.6 W	30 nJ	[17]
Yb:CALYO	Bulk	36 fs	2 W	24 nJ	This work

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Wenlong Tian, Geyang Wang, Dacheng Zhang, Jiangfeng Zhu, Zhaohua Wang, Xiaodong Xu, Jun Xu, Zhiyi Wei. Sub-40-fs high-power Yb:CALYO laser pumped by single-mode fiber laser[J]. High Power Laser Science and Engineering, 2019, 7(4): 04000e64

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Paper Information

Category: Research Articles

Received: Jul. 14, 2019

Accepted: Nov. 7, 2019

Published Online: Dec. 16, 2019

The Author Email: Jiangfeng Zhu (jfzhu@xidian.edu.cn), Zhiyi Wei (zywei@iphy.ac.cn)

DOI:10.1017/hpl.2019.49

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Overview of the state-of-the-art performance of ultrafast Yb solid-state oscillators generating sub-40-fs pulses.a

Table 1. Overview of the state-of-the-art performance of ultrafast Yb solid-state oscillators generating sub-40-fs pulses.a

Table 1. Overview of the state-of-the-art performance of ultrafast Yb solid-state oscillators generating sub-40-fs pulses.^a

Table 1. Overview of the state-of-the-art performance of ultrafast Yb solid-state oscillators generating sub-40-fs pulses.^a