Programmable, Transform-Limited Pulses from a Terahertz Quantum Cascade Laser,ACS Photonics

当前位置： X-MOL 学术 › ACS Photonics › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Programmable, Transform-Limited Pulses from a Terahertz Quantum Cascade Laser
ACS Photonics ( IF 6.5 ) Pub Date : 2020-07-01 , DOI: 10.1021/acsphotonics.0c00458
Iman Kundu ₁ , David R. Bacon ₁ , Paul Dean ₁ , Lianhe Li ₁ , Edmund H. Linfield ₁ , A. Giles Davies ₁ , Joshua R. Freeman ₁

Affiliation

We report programmable control of pulses from a quantum cascade laser. A programmable arbitrary waveform generator is used to control the emission of the lasers by gain-switching. Quantum cascade lasers with both multimode and single-mode emission are studied. Laser emission is coherently detected using a phase-resolved injection seeding technique based on time domain spectroscopy. For the single-mode laser, pulse widths of 500–4000 ps are demonstrated, with time–bandwidth products remaining close to, or below, unity for all pulse widths. Additionally, sequences of two pulses are demonstrated, where the pulse widths, delay, and amplitude of each of the pulses are programmed electronically. A range of pulse parameters are explored. This approach allows for the generation of arbitrary terahertz pulse sequences, which will enable coherent multidimensional spectroscopy and applications requiring optimized pulse shapes.

中文翻译：

太赫兹量子级联激光器的可编程，限制转换脉冲

我们报告了来自量子级联激光器的脉冲的可编程控制。可编程的任意波形发生器用于通过增益切换控制激光器的发射。研究了具有多模和单模发射的量子级联激光器。使用基于时域光谱的相分辨注入种子技术可一致地检测激光发射。对于单模激光器，显示了500-4000 ps的脉冲宽度，并且对于所有脉冲宽度，时间带宽乘积保持接近或低于统一。此外，还演示了两个脉冲序列，其中每个脉冲的脉冲宽度，延迟和幅度都通过电子方式编程。探索了一系列脉冲参数。这种方法可以生成任意的太赫兹脉冲序列，

更新日期：2020-07-01

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11