Watt-Level Continuous-Wave Mode-Locked Nd:YVO4 Laser With ReSe2 Saturable Absorber

Yuchen Xue,Jinhui Cui,Fengjun Tian,Li Li,Bin Zhang,Ruoxing Wang,Jianzhong Zhang

doi:10.1109/jphot.2020.3022800

Yuchen Xue, Jinhui Cui + Show 5 more

Open Access

https://doi.org/10.1109/jphot.2020.3022800

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Journal: IEEE Photonics Journal	Publication Date: Sep 10, 2020
Citations: 6	License type: CC BY 4.0

Affiliation: Harbin Engineering University

Abstract

We report a ReSe 2 passively mode-locked composite YVO 4 /Nd:YVO 4 laser at 1.06 μm, which can stably generate pure continuous-wave mode-locking (CWML) operation at watt-level output. ReSe 2 , as a new type of 2-D transition metal dichalcogenides (TMDs), has the features of weak-layered dependence, broadband saturable absorption, low modulation depth and saturation intensity, which is beneficial to initiate robust CWML mechanism via nonlinear saturable absorption. By employing few-layered ReSe 2 as saturable absorber, the nanosecond mode-locked pulses at fundamental repetition rate of 90.37 MHz was obtained experimentally in a composite YVO 4 /Nd:YVO 4 laser. The maximum output power in pure CWML operation was as high as 1.1 W. The high-power CWML laser source shows potential applications in time-resolved spectroscopy, telecommunication and detection.

Highlights

All-solid-state passively mode-locked lasers with high repetition rate of short pulse output have attracted increasing attention for their advantages in superior stability, high power and quality beam [1]–[3]
We report a ReSe2 passively mode-locked composite YVO4/Nd:YVO4 laser at 1.06 μm, which can stably generate pure continuous-wave mode-locking (CWML) operation at watt-level output
ReSe2, as a new type of 2-D transition metal dichalcogenides (TMDs), has the features of weak-layered dependence, broadband saturable absorption, low modulation depth and saturation intensity, which is beneficial to initiate robust CWML mechanism via nonlinear saturable absorption

Summary

Introduction

All-solid-state passively mode-locked lasers with high repetition rate of short pulse output have attracted increasing attention for their advantages in superior stability, high power and quality beam [1]–[3]. They have been widely used in many technical fields such as industrial manufacture, clinical medicine, military and applied science. In order to make the solid-state mode-locked lasers more compact, low cost and easy to operate, nonlinear saturable absorbers were popularly employed as available intra-cavity modulation elements.

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