Nonlinear optical trapping effect with reverse saturable absorption

IF 20.6 1区 物理与天体物理 Q1 OPTICS
Zheng Zhu, Yuquan Zhang, Shuoshuo Zhang, A. Adam, C. Min, H. P. Urbach, Xiaocong Yuan
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引用次数: 2

Abstract

Abstract. Nonlinear responses of nanoparticles induce enlightening phenomena in optical tweezers. With the gradual increase in optical intensity, effects from saturable absorption (SA) and reverse SA (RSA) arise in sequence and thereby modulate the nonlinear properties of materials. In current nonlinear optical traps, however, the underlying physical mechanism is mainly confined within the SA regime because threshold values required to excite the RSA regime are extremely high. Herein, we demonstrate, both in theory and experiment, nonlinear optical tweezing within the RSA regime, proving that a fascinating composite trapping state is achievable at ultrahigh intensities through an optical force reversal induced through nonlinear absorption. Integrated results help in perfecting the nonlinear optical trapping system, thereby providing beneficial guidance for wider applications of nonlinear optics.
具有反饱和吸收的非线性光学陷阱效应
摘要纳米颗粒的非线性响应在光镊子中引发了启发现象。随着光强度的逐渐增加,可饱和吸收(SA)和反向吸收(RSA)的影响依次出现,从而调制材料的非线性特性。然而,在当前的非线性光学陷阱中,潜在的物理机制主要局限于SA机制,因为激发RSA机制所需的阈值极高。在此,我们在理论和实验中证明了RSA体系中的非线性光学镊子,证明了通过非线性吸收引起的光学力反转,在超高强度下可以实现迷人的复合材料捕获态。综合结果有助于完善非线性光学捕获系统,从而为非线性光学的更广泛应用提供有益的指导。
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来源期刊
CiteScore
22.70
自引率
1.20%
发文量
49
审稿时长
18 weeks
期刊介绍: Advanced Photonics is a highly selective, open-access, international journal that publishes innovative research in all areas of optics and photonics, including fundamental and applied research. The journal publishes top-quality original papers, letters, and review articles, reflecting significant advances and breakthroughs in theoretical and experimental research and novel applications with considerable potential. The journal seeks high-quality, high-impact articles across the entire spectrum of optics, photonics, and related fields with specific emphasis on the following acceptance criteria: -New concepts in terms of fundamental research with great impact and significance -State-of-the-art technologies in terms of novel methods for important applications -Reviews of recent major advances and discoveries and state-of-the-art benchmarking. The journal also publishes news and commentaries highlighting scientific and technological discoveries, breakthroughs, and achievements in optics, photonics, and related fields.
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