Ultrafast time-and angle-resolved photoemission spectroscopy with widely tunable probe photon energy of 5.3-7.0 eV for investigating dynamics of three-dimensional materials
Review of Scientific Instruments, ISSN: 1089-7623, Vol: 93, Issue: 1, Page: 013902
2022
- 18Citations
- 24Captures
- 1Mentions
Metric Options: CountsSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Most Recent News
25 物理系周树云课题组在基于KBBF晶体的超短脉冲、可调谐深紫外光源研制方面取得进展 清华大学物理系周树云教授课题组长期致力于前沿TrARPES仪器设备的研制及超快动力学研究。对于TrARPES系统来说,获得短脉冲、可调谐的探测光源尤为重要。最近,利用KBBF非线性光学晶体,课题组首次获得脉冲宽度55飞秒、光子能量5.3-7.0 eV大范围可调谐的深...
清华新闻网11月25日电 在低维量子材料的研究中,电子结构及超快动力学过程的实验探测具有重要的意义。角分辨光电子能谱(ARPES)是探测材料电子结构的强大实验技术,而超快时间分辨角分辨光电子能谱(TrARPES)则结合了ARPES和超快泵浦-探测技术的优点,可获得低维量子材料中电子能量、动量、时间多维度分辨信息,对非平衡态超快动力学及光诱导的新奇物理效应等前沿科学问题的探索至关重要。 清华大学物理系周树云教授课题组长期致力于前沿TrARPES仪器设备的研制及超快动力学研究。对于TrARPES系统来说,获得短脉冲、可调谐的探测光源尤为重要。最近,利用KBBF非线性光学晶体,课题组首次获得脉冲宽度55飞秒、光子能量5.3-7.0 eV大范围可调谐的深紫外光源,并将其作为探测光源应用于超快动力学的研究中。 在TrARPES实验中,探测光子能量的范围决定了可探测的面外动量范围,因此获得大范围可调谐
Article Description
Time-and angle-resolved photoemission spectroscopy (TrARPES) is a powerful technique for capturing the ultrafast dynamics of charge carriers and revealing photo-induced phase transitions in quantum materials. However, the lack of widely tunable probe photon energy, which is critical for accessing the dispersions at different out-of-plane momentum kz in TrARPES measurements, has hindered the ultrafast dynamics investigation of 3D quantum materials, such as Dirac or Weyl semimetals. Here, we report the development of a TrARPES system with a highly tunable probe photon energy from 5.3 to 7.0 eV. The tunable probe photon energy is generated by the fourth harmonic generation of a tunable wavelength femtosecond laser source by combining a β-BaB2O4 crystal and a KBe2BO3F2 crystal. A high energy resolution of 29-48 meV and time resolution of 280-320 fs are demonstrated on 3D topological materials ZrTe5 and Sb2Te3. Our work opens up new opportunities for exploring ultrafast dynamics in 3D quantum materials.
Bibliographic Details
AIP Publishing
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know