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

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-12 DOI:10.1051/jeos/2024004

Jinbao Wang

引用次数: 0

Abstract

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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啁啾 QPM 晶体中的非共线 SPDC 产生的单周期双光子

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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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.