（PEA）2(CsPbBr3)n−1PbBr4钙钛矿饱和吸收体调q Pr:YLF激光器中可见脉冲涡旋光束的时空操纵

IF 6.7 1区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Photonics Pub Date : 2024-12-13 DOI:10.1021/acsphotonics.4c01994

Yu Zhang, Jingzhen Li, Yaoyao Qi, Ling Zhang, Zhengchang Xia, Zehua Liu, Junchen Li, Song Yang, Zhenxu Bai, Chaojian He, Yulei Wang, Zhiwei Lu, Dapeng Yan, Xingwang Zhang

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引用次数: 0

摘要

具有可控时间剖面和可定制横向模式的可见脉冲涡旋光束具有重要的科学和实用价值。由于可见光谱中成熟的饱和吸收剂（SAs）的可用性有限，从激光产生可见脉冲涡旋光束仍然是一个重大挑战。本文报道了利用准2d (PEA)2(CsPbBr3)n−1PbBr4钙钛矿作为SA，利用Pr:YLF全固态激光器产生640 nm被动调q涡旋光束。在脉冲持续时间为826.5 ~ 371.2 ns、重复频率为63.7 ~ 121.3 kHz的条件下，实现了脉冲TEM0、0模式的稳定生成。此外，使用非共线泵浦技术从Pr:YLF激光腔中产生可定制的横向模式，以精确管理腔内横向模式的增益和损失特性。通过对被动调q激光的像散模式转换，获得了640 nm的一阶涡旋光束。这些结果为产生可见脉冲涡旋光束提供了一种新的范例，在水下通信和超分辨率成像方面具有良好的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Spatial–Temporal Manipulations of Visible Pulsed Vortex Beams in a Q-Switched Pr:YLF Laser with a (PEA)2(CsPbBr3)n−1PbBr4 Perovskite Saturable Absorber

查看原文本刊更多论文

Spatial–Temporal Manipulations of Visible Pulsed Vortex Beams in a Q-Switched Pr:YLF Laser with a (PEA)2(CsPbBr3)n−1PbBr4 Perovskite Saturable Absorber

Visible pulsed vortex beams with controllable temporal profiles and customizable transverse modes are of great scientific and practical interest. The generation of visible pulsed vortex beams from lasers remains a significant challenge due to the limited availability of well-developed saturable absorbers (SAs) in the visible spectrum. Here, we report the generation of 640 nm passively Q-switched vortex beams from a Pr:YLF all-solid-state laser, for the first time to the best of our knowledge, using quasi-2D (PEA)₂(CsPbBr₃)_n−1PbBr₄ perovskites as the SA. Stable pulsed TEM_0,0 mode generation with a tunable pulse duration from 826.5 to 371.2 ns and a corresponding repetition rate from 63.7 to 121.3 kHz was achieved. Additionally, customizable transverse modes were generated from the Pr:YLF laser cavity using a noncollinear pumping technique to precisely manage the gain and loss characteristics of intracavity transverse modes. A first-order vortex beam at 640 nm was obtained through astigmatic mode conversion from the passively Q-switched Pr:YLF laser. These results present a new paradigm in generating visible pulsed vortex beams, offering excellent application potential in underwater communication and super-resolution imaging.

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来源期刊

ACS Photonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

11.90

自引率

5.70%

发文量

438

审稿时长

2.3 months

期刊介绍： Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.