Efficient Cherenkov-Type Optical-to-Terahertz Conversion of Femtosecond Oscillator Pulses

IF 2.1 4区物理与天体物理 Q2 OPTICS

Photonics Pub Date : 2024-01-06 DOI:10.3390/photonics11010062

M. Kurnikov, N. Abramovsky, A. I. Shugurov, S. Bodrov, M. Bakunov

引用次数: 0

Abstract

We demonstrate experimentally that a recently proposed structure comprising a tens of microns thick layer of LiNbO3 sandwiched between two totally reflecting Si prisms can serve as an efficient Cherenkov-type optical-to-terahertz converter of femtosecond laser pulses from an optical oscillator. Using Ti:sapphire laser pulses of 3.75 nJ energy as a pump, we achieved a conversion efficiency of 2.3 ×10−5, which exceeds the efficiency of the conventional collinear scheme with a ZnTe crystal by an order of magnitude. The converter can be used as a reliable radiation source for performing terahertz time-domain spectroscopy.

查看原文本刊更多论文

飞秒振荡器脉冲的高效切伦科夫型太赫兹光电转换

我们通过实验证明了最近提出的一种结构，即在两个全反射硅棱镜之间夹一层几十微米厚的铌酸锂，这种结构可以作为一种高效的切伦科夫型光-太赫兹转换器，转换来自光振荡器的飞秒激光脉冲。使用能量为 3.75 nJ 的钛蓝宝石激光脉冲作为泵浦，我们实现了 2.3 ×10-5 的转换效率，比使用 ZnTe 晶体的传统准直方案的效率高出一个数量级。该转换器可用作进行太赫兹时域光谱分析的可靠辐射源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Photonics Physics and Astronomy-Instrumentation

CiteScore

2.60

自引率

20.80%

发文量

817

审稿时长

8 weeks

期刊介绍： Photonics (ISSN 2304-6732) aims at a fast turn around time for peer-reviewing manuscripts and producing accepted articles. The online-only and open access nature of the journal will allow for a speedy and wide circulation of your research as well as review articles. We aim at establishing Photonics as a leading venue for publishing high impact fundamental research but also applications of optics and photonics. The journal particularly welcomes both theoretical (simulation) and experimental research. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material.