Tunable wavelength optical injection locked actively Q-switched random fiber laser based on RPS-FBG and EOM and analysis of multi pulse phenomenon

IF 3.1 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION

Infrared Physics & Technology Pub Date : 2025-01-28 DOI:10.1016/j.infrared.2025.105737

Chunqi Chen, Rupeng Li, Honggang Pan, Bin Li, Yichen Li, Zihong Zhao

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引用次数: 0

Abstract

In this paper, a tunable wavelength optical injection locked actively Q-switched random fiber laser based on random phase-shifted fiber Bragg grating (RPS-FBG) and electro-optic modulator (EOM) is proposed and experimentally verified. In the experiment, wavelength locking is achieved by injecting an external seed light from a wavelength tunable laser into the resonant cavity, resulting in a stable single-wavelength laser with a wavelength tuning range of approximately 37.4 nm. In the injection locked state, the wavelength drift of the laser is less than 0.04 nm and the power fluctuation is less than 0.14 dB within 1 h, which has good stability. An EOM is added to introduce actively Q-switched. When the pump power increases from 50mW to 350mW, single pulse to three pulses can be generated. The proposed multi-pulse injection-locked random fiber laser is of great significance for the research of wavelength selection and pulse coding in disordered systems.

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来源期刊

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.