400 kHz时大面积光导发射器的大功率单周期太赫兹辐射。

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.555079

Mohsen Khalili, Yicheng Wang, Stephan Winnerl, Clara J Saraceno

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引用次数: 0

摘要

我们报道了gaas基大面积光导发射器的高平均功率太赫兹发射，由倍频商业镱激光放大器激发，没有任何脉冲压缩。LAE泵浦的绿色平均功率为11.4 W (515 nm)，脉冲持续时间为310 fs，重复频率为400 kHz。我们获得了6.7 mW的最大太赫兹功率，频谱扩展到3thz。采用光电采样（EOS）进行检测，在70 s的测量时间内测量到107 dB的峰值动态范围。据我们所知，这是迄今为止最高功率的太赫兹源，以光导发射器为基础，基于简单而坚固的市售yb激光器。

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High-power single-cycle THz emission from large-area photoconductive emitters at 400 kHz.

We report high average power THz emission from a GaAs-based large-area photoconductive emitter, excited by a frequency-doubled, commercial Yb-laser amplifier without any pulse compression. The LAE is pumped at 11.4 W of green average power (515 nm) and 310 fs pulse duration at 400 kHz repetition rate. We obtain a maximum THz power of 6.7 mW with a spectrum extending up to 3 THz. Using electro-optical sampling (EOS) for detection, we measure a high peak dynamic range of 107 dB in a measurement time of 70 s. This is the highest power THz source so far, to the best of our knowledge, demonstrated with photoconductive emitters, based on a simple and robust, commercially available Yb-laser.

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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.