Tm:YAP激光器可宽调谐的2µm光学涡旋

IF 3.3 2区物理与天体物理 Q2 OPTICS

Chinese Optics Letters Pub Date : 2023-01-01 DOI:10.3788/col202321.021405

Jingjing Zhou, Changsheng Zheng, Bin Chen, Ning Zhang, Qinggang Gao, Hangqi Yuan, D. Jia, Zhanxin Wang, Shande Liu, Yuping Zhang, Huiyun Zhang, Yongguang Zhao

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引用次数: 0

摘要

本文报道了采用双折射滤光片的掺铥钇铝钙钛矿(YAP)激光器产生的宽波长调谐光涡旋，其轨道角动量(OAM)为±τ。实验发现，在整个波长调谐过程中，OAM保持良好。得到了在1934.8 ~ 1993.0 nm范围内调谐范围为58 nm的Laguerre - Gaussian (LG 0， (cid:1) 1)模式和1920.4 ~ 1996.6 nm范围内调谐范围为76 nm的Laguerre - Gaussian (LG 0， (cid:1) 1)模式。据我们所知，这是第一次在2 μ m光谱范围内实现标量涡旋激光器波长调谐的实验，也是迄今为止报道的涡旋激光腔最宽的调谐范围。这种涡旋激光器结构坚固，具有直接的波长调谐能力，在光通信领域具有一个额外的自由度，是一种理想的光源。

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Widely tunable 2 µm optical vortex from a Tm:YAP laser

In this paper, we report on a wide wavelength tuning optical vortex carrying orbital angular momentum (OAM) of ± ħ , from a thulium-doped yttrium aluminum perovskite (YAP) laser employing a birefringent filter. The OAM is experimentally found to be well maintained during the whole wavelength tuning process. The Laguerre – Gaussian (LG 0, (cid:1) 1 ) mode with a tuning range of 58 nm from 1934.8 to 1993.0 nm and LG 0, − 1 mode with a range of 76 nm from 1920.4 to 1996.6 nm, are, respectively, obtained. This is, to the best of our knowledge, the first experimental implementation of wavelength tuning for a scalar vortex laser in the 2 μ m spectral range, as well as the broadest tuning range ever reported from the vortex laser cavity. Such a vortex laser with robust structure and straightforward wavelength tuning capability will be an ideal light source for potential applications in the field of optical communication with one additional degree of freedom.

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来源期刊

Chinese Optics Letters 物理-光学

CiteScore

5.60

自引率

20.00%

发文量

180

审稿时长

2.3 months

期刊介绍： Chinese Optics Letters (COL) is an international journal aimed at the rapid dissemination of latest, important discoveries and inventions in all branches of optical science and technology. It is considered to be one of the most important journals in optics in China. It is collected by The Optical Society (OSA) Publishing Digital Library and also indexed by Science Citation Index (SCI), Engineering Index (EI), etc. COL is distinguished by its short review period (~30 days) and publication period (~100 days). With its debut in January 2003, COL is published monthly by Chinese Laser Press, and distributed by OSA outside of Chinese Mainland.