Diode-pumped few-optical-cycle laser based on an ytterbium-doped disordered strontium yttrium borate crystal.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-04-01 DOI:10.1364/OL.559850

Huang-Jun Zeng, Zhang-Lang Lin, Shijia Sun, Pavel Loiko, Haifeng Lin, Ge Zhang, Zhoubin Lin, Chengbo Mou, Xavier Mateos, Valentin Petrov, Weidong Chen

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Abstract

We report on a power-scalable, diode-pumped sub-20-fs mode-locked (ML) laser based on a multisite ytterbium-doped strontium yttrium borate crystal, Yb:Sr₃Y₂(BO₃)₄, exhibiting broadband spectral gain. Pumping with a low-power, spatially single-mode laser diode, the Yb:Sr₃Y₂(BO₃)₄ laser produces soliton pulses as short as 19 fs at 1073.1 nm via soft-aperture Kerr-lens mode locking. A record-high average output power of 131 mW for such pulse durations represents a sixfold increase compared to the previous work. Peak pulse powers as high as ∼140 kW were achieved, increasing the average output power to 328 mW at 1070.5 nm for a slightly longer pulse duration of 28 fs. This corresponds to an impressive laser efficiency of 30%. The results highlight the potential of diode-pumped ytterbium lasers operating in the few-optical-cycle regime for achieving simultaneously high average output power and laser efficiency.

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基于掺镱无序硼酸锶钇晶体的二极管泵浦少光周期激光器。

我们报道了一种功率可扩展的、二极管泵浦的、基于多位点掺镱硼酸锶钇晶体Yb:Sr3Y2(BO3)4的锁模激光器，该激光器具有宽带光谱增益。Yb:Sr3Y2(BO3)4激光器采用低功率空间单模激光二极管泵浦，在1073.1 nm处通过软孔径克尔透镜模式锁定产生短至19 fs的孤子脉冲。在这样的脉冲持续时间内，创纪录的平均输出功率为131兆瓦，与以前的工作相比增加了六倍。峰值脉冲功率高达~ 140 kW，在1070.5 nm处平均输出功率增加到328 mW，脉冲持续时间略长，为28 fs。这相当于令人印象深刻的30%的激光效率。研究结果强调了二极管泵浦镱激光器在低光周期条件下实现高平均输出功率和激光效率的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.