啁啾 QPM 晶体中的非共线 SPDC 产生的单周期双光子

IF 1.9 4区物理与天体物理 Q3 OPTICS

Journal of the European Optical Society-Rapid Publications Pub Date : 2024-02-12 DOI:10.1051/jeos/2024004

Jinbao Wang

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引用次数: 0

摘要

我们分析了非共振自发参量下变频（SPDC），并比较了周期性极化铌酸锂晶体（PPLN）和周期性极化 KTiOPO_4（PPKTP）晶体之间通过啁啾准相位匹配（QPM）产生的双光子。由于晶体的啁啾效应，双光子的频率响应范围将大大增加。对于非线性 SPDC，角度变化是有限的（本文中小于 0.06 度），角度会缩小双光子的频率响应范围。我们比较了 PPLN 晶体和 PPKTP 晶体中角度对双光子的影响。这两种具有啁啾 QPM 的晶体在非共振 SPDC 过程中都能在合适的角度范围内产生单周期双光子，有利于在实验中更广泛地应用。

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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The Single-Cycle Biphotons Generated by Noncollinear SPDC in The Chirped QPM Crystals

We analysis the noncollinear spontaneous parametric down conversion(SPDC) and compare the biphotons generated by the chirped quasi-phase-matching(QPM) between the periodically poled lithium niobate(PPLN) and periodically poled KTiOPO_4(PPKTP) crystals. Due to the chirping of the crystals, the frequency response range of the biphotons would be greatly increased. For nonlinear SPDC, angular variation is limited (less than 0.06 degree in this paper), and the angle would narrow the frequency response range of the biphotons. We compare the effect of angle in PPLN crystals and PPKTP crystals for biphotons. Both the two crystals with chirped QPM, the single-cycle biphotons can be generated during noncollinear SPDC within a suitable angle range, which is favorable for wider applications in experiments.

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来源期刊

Journal of the European Optical Society-Rapid Publications 物理-光学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

5 weeks

期刊介绍： Rapid progress in optics and photonics has broadened its application enormously into many branches, including information and communication technology, security, sensing, bio- and medical sciences, healthcare and chemistry. Recent achievements in other sciences have allowed continual discovery of new natural mysteries and formulation of challenging goals for optics that require further development of modern concepts and running fundamental research. The Journal of the European Optical Society – Rapid Publications (JEOS:RP) aims to tackle all of the aforementioned points in the form of prompt, scientific, high-quality communications that report on the latest findings. It presents emerging technologies and outlining strategic goals in optics and photonics. The journal covers both fundamental and applied topics, including but not limited to: Classical and quantum optics Light/matter interaction Optical communication Micro- and nanooptics Nonlinear optical phenomena Optical materials Optical metrology Optical spectroscopy Colour research Nano and metamaterials Modern photonics technology Optical engineering, design and instrumentation Optical applications in bio-physics and medicine Interdisciplinary fields using photonics, such as in energy, climate change and cultural heritage The journal aims to provide readers with recent and important achievements in optics/photonics and, as its name suggests, it strives for the shortest possible publication time.