Circular cladding waveguides in Pr:YAG fabricated by femtosecond laser inscription: Raman, luminescence properties and guiding performance

IF 15.3 1区物理与天体物理 Q1 OPTICS

Opto-Electronic Advances Pub Date : 2021-02-28 DOI:10.29026/OEA.2021.200005

Quanxin Yang, Hongliang Liu, Shan He, B. Tian, Pengfei Wu

引用次数: 21

Abstract

We report on the fabrication of circular cladding waveguides with cross-section diameters of 60−120 μm in Pr:YAG crystal by applying femtosecond laser inscription. The fabricated waveguides present 2D guidance on the cross-section and fairly low propagation losses. Multiple high-order guiding modes are observed in waveguides with different diameters. Corresponding simulation results reveal the origin of a specific kind of guiding modes. Confocal micro-Raman (μ-Raman) experiments demonstrate the modification effects in femtosecond laser affected areas and ascertain the refractive index induced guiding mechanism. In addition, luminescence emission properties of Pr3+ ions at waveguide volume are well preserved during the femtosecond laser inscription process, which may result in a potential high-power visible waveguide laser.

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飞秒激光制备Pr:YAG圆形包层波导：拉曼、发光特性和引导性能

我们报道了用飞秒激光在Pr:YAG晶体中制备截面直径为60−120μm的圆形包层波导。所制造的波导在横截面上呈现2D引导并且具有相当低的传播损耗。在不同直径的波导中观察到多个高阶导模。相应的仿真结果揭示了一种特定制导方式的起源。共聚焦微拉曼（μ-Raman）实验证明了飞秒激光影响区的改性效应，并确定了折射率诱导的引导机制。此外，在飞秒激光刻蚀过程中，Pr3+离子在波导体积下的发光特性得到了很好的保留，这可能导致潜在的高功率可见光波导激光器。

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

Opto-Electronic Advances OPTICS-

CiteScore

19.30

自引率

7.10%

发文量

128

期刊介绍： Opto-Electronic Advances (OEA) is a distinguished scientific journal that has made significant strides since its inception in March 2018. Here's a collated summary of its key features and accomplishments: Impact Factor and Ranking: OEA boasts an impressive Impact Factor of 14.1, which positions it within the Q1 quartiles of the Optics category. This high ranking indicates that the journal is among the top 25% of its field in terms of citation impact. Open Access and Peer Review: As an open access journal, OEA ensures that research findings are freely available to the global scientific community, promoting wider dissemination and collaboration. It upholds rigorous academic standards through a peer review process, ensuring the quality and integrity of the published research. Database Indexing: OEA's content is indexed in several prestigious databases, including the Science Citation Index (SCI), Engineering Index (EI), Scopus, Chemical Abstracts (CA), and the Index to Chinese Periodical Articles (ICI). This broad indexing facilitates easy access to the journal's articles by researchers worldwide.