Widely Tunable Coupled Mid-IR Diode Lasers With Side Mode Suppression Ratio Above 40 dB

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

IEEE Photonics Technology Letters Pub Date : 2025-07-21 DOI:10.1109/LPT.2025.3591079

Thanh-Nam Tran;Saroj Kumar Patra;Magnus Breivik;Bjørn-Ove Fimland

引用次数: 0

Abstract

A novel tunable coupled lasers structure utilizing the Vernier effect and the light coupling mechanism is successfully demonstrated in the wavelength range of 2.35 –

$2.39~\mu $

m. The coupling effect between two active S-bend and straight waveguide lasers can enable both a wide tuning range and a very high side mode suppression ratio (SMSR) by choosing an appropriate separation gap between these two lasers. With a separation gap of

$5~\mu $

m, a wide tuning range of 40 nm and a stable SMSR of above 40 dB was achieved. Employing a simple structure, this regrowth-free and easily manufactured laser configuration is a highly promising solution for trace-gas sensing applications.

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宽可调谐耦合中红外二极管激光器，侧模抑制比在40db以上

在2.35 ~ 2.39~\mu $ m波长范围内，成功地实现了一种利用微调效应和光耦合机制的新型可调谐耦合激光器结构。通过选择合适的s弯和直波导激光器之间的分离间隙，可以实现宽调谐范围和高侧模抑制比（SMSR）。在5~ μ m的分离间隙下，实现了40 nm的宽调谐范围和40 dB以上的稳定SMSR。采用简单的结构，这种无再生和易于制造的激光器配置是一种非常有前途的解决方案，用于痕量气体传感应用。

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.