Period-multiplying pulses generation by total self-mode-locking of Nd:YVO4 lasers

IF 1.2 4区物理与天体物理 Q4 OPTICS

Laser Physics Pub Date : 2024-04-04 DOI:10.1088/1555-6611/ad38b2

M M Xu, Z R Li, M Hu, Y Y Ji, M H Bi, H Z Li, X F Zhou, S Q Pan, C Liu

引用次数: 0

Abstract

We experimentally demonstrated the phenomenon of period-multiplying pulses in the self-mode-locking Nd:YVO₄ laser. With a fixed cavity length of 50 mm and the input mirrors in the resonator with radii of curvature of 100 mm, 200 mm, and 500 mm, the mode-locked pulses with pulse periods 4 times, 6 times and 10 times the fundamental mode-locked pulse period are observed respectively. Besides, by tilting the angle of the output mirror to control the spatial distribution of transverse modes, the switching between the period-multiplication state and its harmonic self-locking state can be achieved. Numerical simulations further confirm that this period-multiplying phenomenon results from the simultaneous locking of multi-longitudinal and multi-transverse modes. This study is of great significance for understanding the complex transverse dynamics in the self-mode-locking lasers.

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通过 Nd:YVO4 激光器的全自模式锁定产生周期倍增脉冲

我们通过实验证明了自锁模 Nd:YVO4 激光器中的周期倍增脉冲现象。在腔长固定为 50 毫米、谐振器中的输入镜曲率半径分别为 100 毫米、200 毫米和 500 毫米的条件下，分别观测到脉冲周期为基模锁定脉冲周期 4 倍、6 倍和 10 倍的基模锁定脉冲。此外，通过倾斜输出镜的角度来控制横向模式的空间分布，可以实现周期倍增状态和谐波自锁状态之间的切换。数值模拟进一步证实，这种周期倍增现象源于多纵向和多横向模式的同时锁定。这项研究对于理解自模式锁定激光器中复杂的横向动力学具有重要意义。

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

Laser Physics 物理-光学

CiteScore

2.60

自引率

8.30%

发文量

127

审稿时长

2.2 months

期刊介绍： Laser Physics offers a comprehensive view of theoretical and experimental laser research and applications. Articles cover every aspect of modern laser physics and quantum electronics, emphasizing physical effects in various media (solid, gaseous, liquid) leading to the generation of laser radiation; peculiarities of propagation of laser radiation; problems involving impact of laser radiation on various substances and the emerging physical effects, including coherent ones; the applied use of lasers and laser spectroscopy; the processing and storage of information; and more. The full list of subject areas covered is as follows: -physics of lasers- fibre optics and fibre lasers- quantum optics and quantum information science- ultrafast optics and strong-field physics- nonlinear optics- physics of cold trapped atoms- laser methods in chemistry, biology, medicine and ecology- laser spectroscopy- novel laser materials and lasers- optics of nanomaterials- interaction of laser radiation with matter- laser interaction with solids- photonics