Ultrafast-pumped temperature response in in-line cascaded quasi-phase-matching optical second harmonic

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-06-05 DOI:10.1016/j.optcom.2025.132088

Yuhang He , Dan Yu , Yan Li , Hongpeng Liu , Weiji He , Qian Chen

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引用次数: 0

Abstract

We have proposed and experimentally demonstrated a bus temperature sensor array based on nonlinear optics second harmonic generation (SHG) in periodically poled lithium niobate (PPLN) and wavelength coded with poling period. The temperature response on bulk PPLN is studied by interrogating SHG spectra. Group dispersion factor and efficient thermal-birefringence between fundamental wave and second harmonic wave are proposed to describe peak wavelength shift. Single temperature sensor capitalizing on mode-locked laser provides 0.11 nm/°C sensitivity, 80 °C dynamic range around room temperature, and 2 °C temperature resolution. Additionally, a wavelength-coded 1 × 4 sensor array is demonstrated via quasi-comb spectra induced by poling period engineering. Each sensing unit has a unique poling period and SHG peak wavelength which can shift independently, and the temporal-evolved joint spectra of two non-cooperative targets confirm the practicability. The arrayed temperature sensors validate great applying potential on photonic integrated circuits (PIC).

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线性级联准相位匹配光学二次谐波的超快泵浦温度响应

提出了一种基于周期性极化铌酸锂（PPLN）中非线性光学二次谐波产生（SHG）的总线温度传感器阵列，并进行了实验验证。通过询问SHG谱，研究了块状PPLN的温度响应。用群色散因子和基波与次谐波之间的有效热双折射来描述峰值波长偏移。单温度传感器利用锁模激光提供0.11 nm/°C的灵敏度，室温周围80°C的动态范围和2°C的温度分辨率。此外，通过轮询周期工程诱导的准梳状光谱，演示了波长编码的1 × 4传感器阵列。每个传感单元具有独特的轮询周期和可独立移动的SHG峰值波长，两个非合作目标的联合光谱的时间演化验证了该方法的实用性。该阵列温度传感器在光子集成电路（PIC）上具有很大的应用潜力。

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

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.