MXene Ti3C2Tx saturable absorber for passively Q-switched mid-infrared laser operation of femtosecond-laser–inscribed Er:Y2O3 ceramic channel waveguide

Tian Qingyu; Yin Peng; Zhang Teng; Zhou Lunbin; Xu Bin; Luo Zhengqian; Liu Hongliang; Ge Yanqi; Zhang Jian; Liu Peng; Xu Xiaodong

doi:10.1515/nanoph-2020-0005

Nanophotonics (Feb 2020)

MXene Ti3C2Tx saturable absorber for passively Q-switched mid-infrared laser operation of femtosecond-laser–inscribed Er:Y2O3 ceramic channel waveguide

Tian Qingyu,
Yin Peng,
Zhang Teng,
Zhou Lunbin,
Xu Bin,
Luo Zhengqian,
Liu Hongliang,
Ge Yanqi,
Zhang Jian,
Liu Peng,
Xu Xiaodong

Affiliations

Tian Qingyu: Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
Yin Peng: College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
Zhang Teng: Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
Zhou Lunbin: Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
Xu Bin: Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
Luo Zhengqian: Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
Liu Hongliang: Institute of Modern Optics, Nankai University, Tianjin 300350, China
Ge Yanqi: College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
Zhang Jian: Key Laboratory of Transparent and Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, No. 588 Heshuo Road, Shanghai 201899, China
Liu Peng: Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
Xu Xiaodong: Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China

DOI: https://doi.org/10.1515/nanoph-2020-0005
Journal volume & issue: Vol. 9, no. 8
pp. 2495 – 2503

Abstract

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We report on an Er:Y2O3 ceramic channel waveguide laser operating at continuous-wave and passively Q-switched regimes, for the first time to the best of our knowledge. The Er:Y2O3 ceramic channel waveguide has been fabricated by a femtosecond laser direct-writing technique. The maximum output power reached 123.5 mW in continuous-wave mode with a slope efficiency of about 21%, and the lasing behavior has been found simultaneously at 2710.28, 2716.76, and 2723.18 nm. We have further fabricated an MXene Ti3C2Tx saturable absorber mirror to operate the Er:Y2O3 waveguide in passively Q-switched regime. At the same time, property of the MXene Ti3C2Tx saturable absorber has been characterized, and nonlinear saturable absorption of the saturable absorber has also been measured. The average output power is about 67.6 mW, and the shortest pulse width is about 58.1 ns. This work indicates that femtosecond laser direct writing is a reliable technique for processing mid-infrared ceramic waveguides, and MXene Ti3C2Tx is promising for operating pulsed mid-infrared lasers.

Published in Nanophotonics

ISSN: 2192-8606 (Print); 2192-8614 (Online)
Publisher: De Gruyter
Country of publisher: Germany
LCC subjects: Science: Physics
Website: https://www.degruyter.com/journal/key/nanoph/html#submit

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