2 μm Q-switched pulses using a double-clad fiber master oscillator power amplifier (MOPA) with high peak power intensity of 3.11 MW/cm2 and pulse energy of 7.9 µJ

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical and Quantum Electronics Pub Date : 2025-03-12 DOI:10.1007/s11082-025-08095-2

H. Ahmad, M. U. M. Ithnahaini, M. Z. Samion, M. F. Ismail

引用次数: 0

Abstract

This report presents the development and experimental demonstration of a passively high-power Q-switched fiber laser operating at a wavelength of 1940 nm, utilizing MoWS₂ as a saturable absorber (SA). A Q-switched oscillator was constructed using a single-mode thulium-doped fiber (TmDF200) and then to a double-clad thulium-doped fiber (DC-TDF) amplifier stage. The laser system demonstrated in this study showcases a notable average output power of 304 mW, delivering a peak power intensity of 3.11 MW/cm². The pulse energy was 7.96 µJ, while the repetition rate and pulse width were 38.2 kHz and 4.02 µs, respectively. The main amplifier exhibits a commendable slope efficiency of approximately 6.7% and 40 dB signal-to-noise ratio (SNR). The results of this study indicate that MoWS₂ SA can be beneficial for developing robust, stable, high-power Q-switched fiber lasers.

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.