Nonlinear beam conversion with multi-spectral components.

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-02-15 DOI:10.1364/OL.547384

Kai-Hsun Chang, Chia-Chun Fan, To-Fan Pan, Jie-Hua Lai, Ming-Shun Tsai, Azzedine Boudrioua, Chih-Ming Lai, Hiroyuki Yokoyama, Eiji Higurashi, Hidefumi Akiyama, Katrin Paschke, Lung-Han Peng

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引用次数: 0

Abstract

We characterized the intra-cavity mode patterns due to the concurrence of dual-optical parametric oscillations (OPOs) followed by second-harmonic generation (SHG) and sum-frequency generation (SFG) within a gain-modulated quasi-phase-matching nonlinear photonic crystal (QPM-NPC). The proposed device contains a bi-grating QPM period for downconversion, followed by mono- or tri-grating QPM periods for upconversion on periodically poled lithium tantalate. The pairs of infrared dual-OPO beams are found to spatially reside at the opposite sidelobes of the cavity mode, each exhibiting distinct spectral contents corresponding to the pair of (signal, idler) waves oscillating at (979, 1167) nm and (964, 1189) nm, respectively. The QPM-SHG waves at 582 and 593 nm are found to overlap with their respective OPO counterparts in the sidelobes, whereas the QPM-SFG at 588 nm wavelength is located at the center. Such spatial-spectral configurability reveals a subtle spatial overlap in the dual-OPO idlers due to wave continuity in the gain-modulated NPC, which agrees with our model calculation.

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具有多光谱分量的非线性光束转换。

我们表征了增益调制准相位匹配非线性光子晶体（QPM-NPC）中双光参量振荡（OPOs）并发的二次谐波（SHG）和和频产生（SFG）的腔内模式模式。该装置包含一个用于下转换的双光栅QPM周期，随后是用于周期性极化钽酸锂上转换的单光栅或三光栅QPM周期。这对红外双opo光束在空间上位于空腔模式的相对侧瓣，各自显示出不同的光谱内容，分别对应于（979,1167）nm和（964,1189）nm振荡的（信号，空闲）波对。582和593 nm的QPM-SHG波与各自的OPO波在旁瓣重叠，而588 nm的QPM-SFG波位于中心。这种空间-频谱可配置性表明，由于增益调制NPC中的波连续性，在双opo空闲器中存在微妙的空间重叠，这与我们的模型计算一致。

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 letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.