Magneto-Optical Modulation of Bismuth-Doped Rare Earth Iron Garnet in a 1342 nm Resonator

IF 2.5 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-09-03 DOI:10.1109/LPT.2025.3605603

Jianjian Ruan;Weicai Lin;Dong Sun;Zichen Zhang;Shufan Li;Hongyi Lin

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引用次数: 0

Abstract

Although bismuth-doped rare earth iron garnet (BIG) thick films are extensively utilized in optical isolators, magneto-optical switches, and non-reciprocal optical devices due to their exceptionally high Faraday rotation angle, broad spectral response, and remarkable thermal stability, there remains a notable lack of research dedicated to the application of BIG for magneto-optical modulation within laser resonators. In this study,

$340\mu $

m thick BIG films are randomly positioned within the resonant cavity of a Nd:YVO

${}_{\mathbf {4}}$

laser at 1342 nm. The saturation magnetic field required for the BIG is only 80 mT. In the absence of an external magnetic field, no laser output is observed. However, when a saturated magnetic field is applied, the laser generates output instantaneously, achieving an output power of up to 485 mW under a pump power of 2987 mW. The experimental results demonstrate that the presence or absence of the output laser can be effectively controlled by adjusting the state of the magnetic field, thereby achieving magneto-optical modulation of the laser. This research not only expands the functional capabilities of BIG thick films, but also provides a novel and efficient intracavity modulation scheme for all-solid-state laser systems. This advancement is anticipated to have significant implications in laser communication, precision processing, quantum optics and other fields.

查看原文本刊更多论文

掺铋稀土铁石榴石在1342 nm谐振腔中的磁光调制

虽然铋掺杂稀土铁石榴石（BIG）厚膜由于其极高的法拉第旋转角、广谱响应和出色的热稳定性，被广泛应用于光隔离器、磁光开关和非互易光学器件中，但在激光谐振器中应用BIG的磁光调制的研究仍显着缺乏。在这项研究中，$340\mu $ m厚的BIG薄膜被随机放置在1342 nm的Nd:YVO ${}_{\mathbf{4}}$激光器的谐振腔内。BIG所需的饱和磁场仅为80mt。在没有外部磁场的情况下，没有观察到激光输出。然而，当施加饱和磁场时，激光器立即产生输出，在2987 mW的泵浦功率下，输出功率高达485 mW。实验结果表明，通过调节磁场的状态，可以有效地控制输出激光的存在与否，从而实现激光的磁光调制。该研究不仅扩展了BIG厚膜的功能，而且为全固态激光系统提供了一种新颖高效的腔内调制方案。这一进展有望在激光通信、精密加工、量子光学等领域产生重大影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.