用于分析多模半导体激光器外部量子效率的高分辨率光谱技术

IF 3.1 3区物理与天体物理 Q2 Engineering

Optik Pub Date : 2024-10-02 DOI:10.1016/j.ijleo.2024.172068

Watheq Al-Basheer , Taofeek O. Adigun , Abdulaziz Aljalal , Khaled Gasmi

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引用次数: 0

摘要

利用氮化镓基半导体激光器的高分辨率发射光谱，研究了外差量子效率随温度变化的情况，以及长时间连续工作的稳定性。此外，还报告了在阈值电流以下和阈值电流以上发射的光学增益和纵向模式的动态和演变。在对整个工作电流和温度范围内的 L-I 曲线进行研究后，确定了量子效率的三个不同温度区，其中 285-301 K 温度区的稳定性最高。通过监测阈值电流随温度的变化，还评估了激光器的热稳定性。

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A high-resolution spectroscopic technique for the analysis of the external quantum efficiency of a multimode semiconductor laser

The high-resolution emission spectra of a GaN-based semiconductor laser were utilized to investigate the external differential quantum efficiency variation with temperature and stability over an extended period of continuous operation time. Moreover, the dynamics and evolution of the optical gain and longitudinal modes emitted both below and above threshold current were also reported. Upon studying the L-I curves over the full range of operating current and temperature, three distinct temperature regimes of the quantum efficiency were identified, with the regime of the temperature range 285–301 K yielding the highest stability. The thermal stability of the laser was also assessed by monitoring the variation of threshold current with temperature.

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来源期刊

Optik 物理-光学

CiteScore

6.90

自引率

12.90%

发文量

1471

审稿时长

46 days

期刊介绍： Optik publishes articles on all subjects related to light and electron optics and offers a survey on the state of research and technical development within the following fields: Optics: -Optics design, geometrical and beam optics, wave optics- Optical and micro-optical components, diffractive optics, devices and systems- Photoelectric and optoelectronic devices- Optical properties of materials, nonlinear optics, wave propagation and transmission in homogeneous and inhomogeneous materials- Information optics, image formation and processing, holographic techniques, microscopes and spectrometer techniques, and image analysis- Optical testing and measuring techniques- Optical communication and computing- Physiological optics- As well as other related topics.