期刊
OPTICS LETTERS
卷 39, 期 18, 页码 5403-5406出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.39.005403
关键词
-
类别
资金
- excellence cluster The Humburg Centre for Ultrafast Imaging-Structure
- Dynamics and Control of Matter at the Atomic Scale of the Deutsche Forschungsgemeinschaft
- Center for Free-Electron Laser Science at the Deutsches Elektronen-Synchrotron (DESY)
- Center of the Helmholtz Association
- DARPA [N66001-11-1-4192]
- AFOSR [AFOSR-A9550-12-1-0499]
- Alexander von Humboldt Foundation
We experimentally investigate the limits of 800-nm-to-terahertz (THz) energy conversion in lithium niobate at room temperature driven by amplified Ti:sapphire laser pulses with tilted pulse front. The influence of the pump central wavelength, pulse duration, and fluence on THz generation is studied. We achieved a high peak efficiency of 0.12% using transform limited 150 fs pulses and observed saturation of the optical-to-THz conversion efficiency at a fluence of 15 mJ/cm(2) for this pulse duration. We experimentally identify two main limitations for the scaling of optical-to-THz conversion efficiencies: (i) the large spectral broadening of the optical pump spectrum in combination with large angular dispersion of the tilted pulse front and (ii) free-carrier absorption of THz radiation due to multi-photon absorption of the 800 nm radiation. (C) 2014 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据